单选题Even most imaginative people have to admit that _____.A human societies are as advanced as those on some other planetsB planets other than Earth are not suitable for life like ours to stayC it is difficult to distinguish between organic parts and inorg

题目
单选题
Even most imaginative people have to admit that _____.
A

human societies are as advanced as those on some other planets

B

planets other than Earth are not suitable for life like ours to stay

C

it is difficult to distinguish between organic parts and inorganic parts of the human body

D

organisms are more creative than machines


相似考题

2.共用题干 Understanding Autism1 Autism(孤独症)is a life-long developmental disability that prevents individuals from properly understanding what they see,hear and other senses.This results in severe problems of social relationships,communication and behavior. Individuals with autism have to painstakingly(费力地)learn normal patterns of speech and communication, and appropriate ways to relate to people,objects and events,in a similar manner to those who have had a stroke.2 The cause of autism is still unknown.Some research suggests a physical problem affecting those parts of the brain that process language and information coming in from the senses. There may be some imbalance of certain chemicals in the brain. Genetic(遗传的) factors may sometimes be involved.Autism may indeed result from a combination of several "causes".3 Most people with mental retardation(智力迟钝)show relatively even skill development. Individuals with autism,however,typically show uneven skill development,with deficits(欠缺)in certain areas一most frequently in their ability to communicate and relate to others一and distinct skills in other areas.It is important to distinguish autism from mental retardation or other disorders , since diagnostic(诊断的)confusion may lead to inappropriate and ineffective treatment techniques.4 In general,individuals with autism perlorm best at jobs which are structured and involve a degree of repetition.Some people who have autism are working as artists,piano tuners, painters,farm workers,office workers,computer operators,dishwashers,assembly lineworkers,or employees of sheltered workshops or other sheltered work settings.A typical feature of people with autism is their uneven_______.A:different techniquesB:social relationships and communicationC:language and informationD:several causes working togetherE:a degree of repetitionF:skill development

3.共用题干 Understanding Autism1 Autism(孤独症)is a life-long developmental disability that prevents individuals from properly understanding what they see,hear and other senses.This results in severe problems of social relationships,communication and behavior. Individuals with autism have to painstakingly(费力地)learn normal patterns of speech and communication, and appropriate ways to relate to people,objects and events,in a similar manner to those who have had a stroke.2 The cause of autism is still unknown.Some research suggests a physical problem affecting those parts of the brain that process language and information coming in from the senses. There may be some imbalance of certain chemicals in the brain. Genetic(遗传的) factors may sometimes be involved.Autism may indeed result from a combination of several "causes".3 Most people with mental retardation(智力迟钝)show relatively even skill development. Individuals with autism,however,typically show uneven skill development,with deficits(欠缺)in certain areas一most frequently in their ability to communicate and relate to others一and distinct skills in other areas.It is important to distinguish autism from mental retardation or other disorders , since diagnostic(诊断的)confusion may lead to inappropriate and ineffective treatment techniques.4 In general,individuals with autism perlorm best at jobs which are structured and involve a degree of repetition.Some people who have autism are working as artists,piano tuners, painters,farm workers,office workers,computer operators,dishwashers,assembly lineworkers,or employees of sheltered workshops or other sheltered work settings.Individuals with autism are particularly weak at_______.A:different techniquesB:social relationships and communicationC:language and informationD:several causes working togetherE:a degree of repetitionF:skill development

4.共用题干 Understanding Autism(孤独症)1 Autism is a life-long developmental disability that prevents individuals from properly understanding what,they see,hear,and otherwise sense.This results in severe problems of social relationships, communication , and behavior. Individuals with autism have to painstakingly(费力地)learn normal patterns of speech and communication,and appropriate ways to relate to people,objects,and events,in a similar manner to those who have had a stroke.2 The cause of autism is still unknown.Some research suggests a physical problem affecting those parts of the brain that process language and information coming in from the senses.There may be some imbalance of certain chemicals in the brain. Genetic(遗传的)factors may sometimes be involved. Autism may indeed result from a combination of several"causes".3 Most people with mental retardation(智力迟钝的)show relatively even skill development. Individualswith autism, however,typically show uneven skill development, with deficits(欠缺)in certain areas—most frequently in their ability to communicate and relate to others—and distinct skills in other areas.It is importantto distinguish autism from mental retardation or other disorders , since diagnostic(诊断的)confusion may lead to inappropriate and ineffective treatment techniques.4 In general,individuals with autism perform best at jobs which are structured and involve a degree of repetition.Some people who have autism are working as artists,piano tuners,painters,farm workers,office workers,computer operators,dishwashers,assembly line workers,or employees of sheltered workshops or other sheltered work settings.Paragraph 4 ________A:What Causes AutismB:How Common is AutismC:Does Autism Occur Together With Other DisabilitiesD:What is AutismE:What Jobs can Individuals With Autism DoF:What is the Difference Between Autism and Mental Retardation

参考答案和解析
正确答案: C
解析:
文章首段“Mars looks like the only planet where life like ours could exist, and even this is doubtful.”表达了对外星球上是否有地球人的置疑,第五段“If this is the case, they may be much more tolerant of their environment, multiplying under conditions that would destroy immediately any organism made of carbon compounds and dependent on the familiar carbon cycle.”说明外星球不适合现在的人类居住,故B项正确。
更多“单选题Even most imaginative people have to admit that _____.A human societies are as advanced as those on some other planetsB planets other than Earth are not suitable for life like ours to stayC it is difficult to distinguish between organic parts and inorg”相关问题
  • 第1题:

    共用题干
    Understanding Autism

    1 Autism(孤独症)is a life-long developmental disability that prevents individuals from
    properly understanding what they see,hear and other senses.This results in severe
    problems of social relationships,communication and behavior. Individuals with autism have
    to painstakingly(费力地)learn normal patterns of speech and communication, and
    appropriate ways to relate to people,objects and events,in a similar manner to those who
    have had a stroke.
    2 The cause of autism is still unknown.Some research suggests a physical problem
    affecting those parts of the brain that process language and information coming in from the
    senses. There may be some imbalance of certain chemicals in the brain. Genetic(遗传的)
    factors may sometimes be involved.Autism may indeed result from a combination of several
    "causes".
    3 Most people with mental retardation(智力迟钝)show relatively even skill development.
    Individuals with autism,however,typically show uneven skill development,with deficits(欠
    缺)in certain areas一most frequently in their ability to communicate and relate to others一
    and distinct skills in other areas.It is important to distinguish autism from mental retardation
    or other disorders , since diagnostic(诊断的)confusion may lead to inappropriate and
    ineffective treatment techniques.
    4 In general,individuals with autism perlorm best at jobs which are structured and involve
    a degree of repetition.Some people who have autism are working as artists,piano tuners,
    painters,farm workers,office workers,computer operators,dishwashers,assembly line
    workers,or employees of sheltered workshops or other sheltered work settings.

    Paragraph 2_______
    A:What causes autism?
    B:How common is autism?
    C:Does autism occur together with other disabilities?
    D:What is the difference between autism and mental retardation?
    E:What is autism?
    F:What kinds of jobs can individuals with autism do?

    答案:A
    解析:

  • 第2题:

    共用题干
    Prolonging Human Life

    1.Prolonging human life has increased the size of the human population.Many people alive today would have died of childhood diseases if they had been born 100 years ago.Because more people live longer,there are more people around at any given time.In fact,it is a decrease in death rates,not an increase in birthrates,that has led to the population explosion.
    2.Prolonging human life has also increased the dependency load.In all societies,people who are disabled or too young or too old to work are dependent on the rest of society to provide for them. In hunting and gathering cultures,old people who could not keep up might be left behind to die.In times of famine,infants might be allowed to die because they could not survive if their parents starved,whereas if the parents survived they could have another child.
    3.In most contemporary societies,people feel a moral obligation to keep people alive whether they can work or not. We have a great many people today who live past the age at which they want to work or are able to work.We also have rules which require people to retire at a certain age.Unless these people were able to save money for their retirement,somebody else must support them.In the United States many retired people live on social security checks which are so little that they must live in near poverty. Older people have more illness than young or middle-aged people.Unless they have wealth or private or government insurance,they must often"go on welfare"if they have a serious illness.
    4.When older people become senile or too weak and ill to care for themselves,they create grave problems for their families.In the past and in some traditional cultures,they would be cared for at home until they died.Today,with most members of a household working or in school,there is often no one at home who can care for a sick or weak person.To meet this need,a great many nursing homes and convalescent hospitals have been built. These are often profit-making organizations, although some are sponsored by religious and other nonprofit groups.While a few of these institutions are good,most of them are simply"dumping grounds"for the dying in which"care"is given by poorly paid,overworked,and under-skilled personnel.

    Paragraph 4________
    A:The old people are heavy load for the society.
    B:Prolonging human life may lead to population explosion.
    C:How to prolong human life.
    D:Dependency load caused by prolonging human life.
    E:Increased birthrate helps prolong human life.
    F: How the old people are cared for when they are getting weak in contemporary society.

    答案:F
    解析:
    文章第一段提出了延长寿命会造成地球人口数量增加的观点,并解释了导致这一现象的原因。因此答案应当选择选项B。
    文章第二段主要讲的是延长人寿命的同时也使要照顾的人数增加了。因此选择D项。
    文章第三段主要解释为什么说老年人会是社会沉重的负担。因此选择A项。
    第四段主要讲的是当今社会老年人生活的状况,及他们生病或身体变弱后会受到的照顾。因此选择F项。
    文章第一段提到如果出生在100年前,很多人会早早死于儿童疾病。因此选项C是正确的。
    文章第二段讲到在过去的狩猎和采集文化时代,部落里跟不上队伍的老年人会被撤下任其死去。因此选项B是正确的。
    第四段第一句讲到,在如今的社会老人生病或变得虚弱会给家庭带来很大的负担。因此选项A是正确的。
    文章最后一段描述现代社会的人们工作和生活的压力很大,大部分情况下没有人能留在家里照顾老人,因此选项D是正确的。

  • 第3题:

    共用题干
    第二篇

    Human and the Earth

    In terms of the evolution of life on Earth,human beings have just arrived.Despite their shori time on Earth,however,people have brought about enormous changes to the surface of the planet一changes far out of proportion to the interval of time they have occupied it.
    People have more control over their surroundings than any other species on Earth.With the combination of intelligence and manual skill(allowing us to make and use tools),people have found ways to use plant and animal resources,mineral ores,fuels,and many other materials and resources from the Earth.
    As the number of people on Earth increases,it becomes increasingly difficult for the population to survive on the resources of the land.The amount of land is limited.Although agricultural production can be increased by use of machinery such as tractors and the addition of fertilizer,the land ultimately can produce only so much food and no more.
    As the human population grows,people consume more.Clearly,some locations on Earth already have too many people;in many of these areas,future increases will surely bring about more poverty and suffering. Yet people in rich nations use proportionally far more of the available resources than people in poorer nations.As they consume these resources without restraint,they also waste large amounts of them.
    People are only a very small fraction of all the living things on the planet.Yet their numbers create a drain on resources that can't be renewed.For example,the amount of water on Earth is limited,this water is cleaned through natural processes.However,the natural processes for filtering water can clean only a certain amount of water by removing the pollution.Likewise,a limited amount of petroleum can be found under the Earth's surface.Petroleum is a valuable resource.Should people use it up to manufacture petrol for automobiles?As people work to control the planet and make life comfortable,are they using up resources that are needed for their survival?

    Why have people more control over their surroundings than any other species on Earth?
    A:Because of their intelligence and manual skill.
    B:Because they can use plant and animal resources,mineral ores and fuels.
    C:Because they are cleverer than any other animals on Earth.
    D:Both A and B.

    答案:D
    解析:
    文章第一段第一句话提到“就地球上生命的进化而言,人类是姗姗来迟者”,因此比较而言,人类的历史并不长。选项A是正确的。
    从文章第二段第二句话“With the combination of intelligence and manual skill...”我们知道选项A和B都是正确的,因此选择D项。
    文章第三段提到,土地的总量是有限的。虽然使用拖拉机等机械和施用化肥可以提高农业产量,但是土地最终所能产出的粮食只有那么多,不会再增加。因此只有选项C是正确的。
    文章第四段第三句说富裕国家的人们所使用的能源在比例上远远大于贫穷国家的人们。选项C中提到的“发达国家的人们”最符合题意。
    根据文章最后一段关于资源的描述我们可以发现选项A、B、C都是正确的,只有选项D的表述错误,因此选择D项。

  • 第4题:

    共用题干
    第二篇

    Human and the Earth

    In terms of the evolution of life on Earth,human beings have just arrived.Despite their shori time on Earth,however,people have brought about enormous changes to the surface of the planet一changes far out of proportion to the interval of time they have occupied it.
    People have more control over their surroundings than any other species on Earth.With the combination of intelligence and manual skill(allowing us to make and use tools),people have found ways to use plant and animal resources,mineral ores,fuels,and many other materials and resources from the Earth.
    As the number of people on Earth increases,it becomes increasingly difficult for the population to survive on the resources of the land.The amount of land is limited.Although agricultural production can be increased by use of machinery such as tractors and the addition of fertilizer,the land ultimately can produce only so much food and no more.
    As the human population grows,people consume more.Clearly,some locations on Earth already have too many people;in many of these areas,future increases will surely bring about more poverty and suffering. Yet people in rich nations use proportionally far more of the available resources than people in poorer nations.As they consume these resources without restraint,they also waste large amounts of them.
    People are only a very small fraction of all the living things on the planet.Yet their numbers create a drain on resources that can't be renewed.For example,the amount of water on Earth is limited,this water is cleaned through natural processes.However,the natural processes for filtering water can clean only a certain amount of water by removing the pollution.Likewise,a limited amount of petroleum can be found under the Earth's surface.Petroleum is a valuable resource.Should people use it up to manufacture petrol for automobiles?As people work to control the planet and make life comfortable,are they using up resources that are needed for their survival?

    Which of the following statements about resources on Earth is not correct?
    A:They can not be renewed.
    B:Water is a kind of resource which can not be renewed.
    C:Some of the resources are valuable.
    D:Many resources can be recycled so we don't need to worry about them.

    答案:D
    解析:
    文章第一段第一句话提到“就地球上生命的进化而言,人类是姗姗来迟者”,因此比较而言,人类的历史并不长。选项A是正确的。
    从文章第二段第二句话“With the combination of intelligence and manual skill...”我们知道选项A和B都是正确的,因此选择D项。
    文章第三段提到,土地的总量是有限的。虽然使用拖拉机等机械和施用化肥可以提高农业产量,但是土地最终所能产出的粮食只有那么多,不会再增加。因此只有选项C是正确的。
    文章第四段第三句说富裕国家的人们所使用的能源在比例上远远大于贫穷国家的人们。选项C中提到的“发达国家的人们”最符合题意。
    根据文章最后一段关于资源的描述我们可以发现选项A、B、C都是正确的,只有选项D的表述错误,因此选择D项。

  • 第5题:

    共用题干
    Prolonging Human Life
    Prolonging human life has increased the size of the human population. Many people alive
    today would have died of childhood diseases if they had been born 100 years ago.Because
    more people live longer,there are more people around at any given time. In fact,it is a decrease in death rates,not an increase in birthrates,that has led to the population explosion.
    Prolonging human life has also increased the dependency load. In all societies,people who are disabled or too young or too old to work are dependent on the rest of society to provide for them. In hunting and gathering cultures,old people who could not keep up might be left behind to die. In times of famine,infants might be allowed to die because they could not survive if their parents starved,whereas if the parents survived they could have another child. In most contemporary societies,people feel a moral obligation to keep people alive whether they can work or not. We have a great many people today who live past the age at which they want to work or are able to work;we also have rules which require people to retire at a certain age. Unless these people were able to save money for their retirement,some-body else must support them. In the United States many retired people live on social security checks which are so little that they must live in near poverty. Older people have more illness than young or middle-aged people;unless they have wealth or private or government insur-ance,they must often“go on welfare” if they have a serious illness.
    When older people become senile or too weak and ill to care for themselves,they create grave problems for their families. In the past and in some traditional cultures,they would be cared for at home until they died. Today,with most members of a household working or in school,there is often no one at home who can care for a sick or weak person. To meet this need,a great many nursing homes and convalescent hospitals have been built.These are of-ten profit-making organizations,although some are sponsored by religious and other nonprofit groups.While a few of these institutions are good,most of them are simply“dumping grounds”for the dying in which“care”is given by poorly paid,overworked,and under-skilled personnel.

    According to the passage,which of the following statements about retired people in the United States is true?
    A: Many of them have a very hard life.
    B: They cannot live a decent life without enough bank savings.
    C: They rely mainly on their children for financial support.
    D: Most of them live with their children and therefore are well looked after.

    答案:A
    解析:
    题干意为“作者认为造成人口爆炸的原因是什么?”利用题干中的细节信息短语population explosion作为定位线索,在第一段中找到相关句:In fact, it is a decrease in death rates, not an increase in birthrates, that has led to the population explosion.该句意为 “事实上,是由于死亡率的下降,而不是出生率的上升,导致了人口爆炸”。因此,C项“死亡率的下降”是正确答案。
    题干意为“从短文中可以推断出狩猎和以采集为生的时代……”。利用题干中的细节信息词/短语hunting和gathering cultures作为定位线索,在第二段中找到相关句: In hunting and gathering cultures,old people who could not keep up might be left behind to die. In times of famine,infants might be allowed to die because they could not survive if their parents starved, whereas if the parents survived they could have another child.相关句意为 “在以狩猎和采集为生的时代,不能跟上其他人的老人会被甩在后面,任他死去。在饥荒时,人们会放任婴儿死亡,因为如果他们的父母饿死了,他们也无法生存,而如果父母生存下来可重新生儿育女”。因此,B项“遇到饥荒时,人们会放任婴儿死亡”是正确的答案。
    题干意为“依据短文内容来看,关于美国退休人员的陈述下面哪个选项正确?”利用题干中的细节信息短语retired people和the United States作为定位线索,在第二 段中找到相关句:In the United States many retired people live on social security checks which are so little that they must live in near poverty.该句提到“在美国,许多退休人员依靠社会保障金生活,其数额非常微薄,使得他们几乎挣扎于贫困的边缘”,由此可知在美国许多退休人员的生活是很艰难的。这正是选项A表达的意思,因而A项“许多人生活艰难”是正确的答案。
    题干意为“在第三段中,‘this need’…”。该题属于词汇题中的语篇衔接词 题。首先找到“this need”所在的句子:To meet this need, a great many nursing homes and convalescent hospitals have been built. “this need”应该回指上文中具体提到的需要,因此关 注上文,首先关注该句的前一句:Today, with most members of a household working or in school, there is often no one at home who can care for a sick or weak person.该句意为“当今,由于家庭中大多数人都出去工作或上学,家里常常没有人来照顾有病或身体虚弱的人”。由此可知上文中提到的需要是“照顾有病的和身体虚弱的人”,因此答案为D项“需要照顾有病的和身体虚弱的人”。
    题干意为“下面哪个选项能最恰当地描述作者对养老院和康复医院的态度?”该题属于主旨题,通常短文主题会在短文开头及/或短文结尾处有明确体现,因此首先关 注短文结尾处的句子:...most of them are simply “dumping grounds” for the dying in which“care” is given by poorly paid, overworked, and under-skilled personnel.该句提到“大多数机构只不过是丢弃垂死的人的‘垃饭场’,所谓的‘照顾’都是由收入低、超量工作、技术水平低下的人员提供的”。从作者的用词中可以看出作者在对包括养老院和康复医院的大多数机构持批评的态度,因此答案为D项“批评性的”。

  • 第6题:

    共用题干
    第二篇

    Human and the Earth

    In terms of the evolution of life on Earth,human beings have just arrived.Despite their shori time on Earth,however,people have brought about enormous changes to the surface of the planet一changes far out of proportion to the interval of time they have occupied it.
    People have more control over their surroundings than any other species on Earth.With the combination of intelligence and manual skill(allowing us to make and use tools),people have found ways to use plant and animal resources,mineral ores,fuels,and many other materials and resources from the Earth.
    As the number of people on Earth increases,it becomes increasingly difficult for the population to survive on the resources of the land.The amount of land is limited.Although agricultural production can be increased by use of machinery such as tractors and the addition of fertilizer,the land ultimately can produce only so much food and no more.
    As the human population grows,people consume more.Clearly,some locations on Earth already have too many people;in many of these areas,future increases will surely bring about more poverty and suffering. Yet people in rich nations use proportionally far more of the available resources than people in poorer nations.As they consume these resources without restraint,they also waste large amounts of them.
    People are only a very small fraction of all the living things on the planet.Yet their numbers create a drain on resources that can't be renewed.For example,the amount of water on Earth is limited,this water is cleaned through natural processes.However,the natural processes for filtering water can clean only a certain amount of water by removing the pollution.Likewise,a limited amount of petroleum can be found under the Earth's surface.Petroleum is a valuable resource.Should people use it up to manufacture petrol for automobiles?As people work to control the planet and make life comfortable,are they using up resources that are needed for their survival?

    Who use more available resources according to the passage?
    A:Rich people on Earth.
    B:Poor people on Earth.
    C:People in developed countries.
    D:People in developing countries.

    答案:C
    解析:
    文章第一段第一句话提到“就地球上生命的进化而言,人类是姗姗来迟者”,因此比较而言,人类的历史并不长。选项A是正确的。
    从文章第二段第二句话“With the combination of intelligence and manual skill...”我们知道选项A和B都是正确的,因此选择D项。
    文章第三段提到,土地的总量是有限的。虽然使用拖拉机等机械和施用化肥可以提高农业产量,但是土地最终所能产出的粮食只有那么多,不会再增加。因此只有选项C是正确的。
    文章第四段第三句说富裕国家的人们所使用的能源在比例上远远大于贫穷国家的人们。选项C中提到的“发达国家的人们”最符合题意。
    根据文章最后一段关于资源的描述我们可以发现选项A、B、C都是正确的,只有选项D的表述错误,因此选择D项。

  • 第7题:

    Passage Four
    Ideasabout polite behaviour differ from one culture to another.Some societies,such asAmerica and Australia,for example,are mobile and veryopen.People here change jobs and move house quiteoften.As a m result,they have a lot of relationships that often last only mashort time,and they need to get to know people quickly.So it′s normal to havefriendly conversations with people that they have just met,and you can talk aboutthings that other cultures would regard as personal.
    On the other hand,there are more crowded and less mobile societies where long-termrelationships are more important.A Malaysian or Mexican business person,for example,willwant to get to know you very well before he or she feels happy to startbusiness.But when you do get to know each other,the relationship becomes muchdeeper than it would in a mobile society.
    To Americans,both Europeans and Asians seem cool and formal atfirst.On the other hand,as a passenger from a less mobile society puts it,it′s no fun spending several hours next to a stranger who wants to tell you allabout his or her life and asks you all sorts of questions that you don′t want to answer.
    Cross-cultural differences aren′t just a problem for travelers,but also for people in daily life.Some societies have"universalist′′cultures.These societies strongly respect rules,and they treat every personand situation in basically the same way."Particularist"(强调特性的)societies also have rules,but they are less important than thesociety′s unwritten ideas about what is right or wrong for a particularsituation or a particular person.So the normal rules are changed to fit theneeds of the situation or the importance of the person.

    What can be learned fromParagraph 1?

    A.People from a mobile society disliketalking about personal affairs.
    B.Short-term relationships are common ina mobile society.
    C.Americans tend to make more friendsthan people from other cultures.
    D.It is difficult for Americans andAustralians to?communicate with strangers.

    答案:B
    解析:

  • 第8题:

    共用题干
    So Many"Earths"
    The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
    A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
    The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
    The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
    The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
    Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.

    The planet that could support life might be a little bit smaller than Earth.
    A:Right
    B:Wrong
    C:Not mentioned

    答案:B
    解析:
    本篇文章只在第二段第一句表明,近来一次机械故障使开普勒太空望远镜不再为我们服务,并没有提到开普勒太空望远镜为我们服务了多少年。
    第二段最后一句表明,开普勒太空望远镜主要寻找与地球有相似环境的星球。
    第三段第二句表明,可让生命存在的星球的直径至少与地球的直径一样大,但不会超过地球直径的两倍。由此可推测出其不会比地球小,因此题干表述错误。
    第三段第三、四句表明,适合生命存在的星球必须与它所环绕的恒星有一个合适的距离,以保证星球表面的温度允许液态水存在,而地球正是适合人类居住的星球,而且地球是绕着太阳运行的。
    第四段第一句表明,这项新评估源于对超过4.2万颗星球的分析,而非源于对17万颗星球的分析。
    第五段第一句表明,研究者承认这项评估是粗糙的,即不精确的。
    文章第一段指出,这次的调查结果是新的发现,但通篇文章并未提到这是对可能有生命存在的星球的首次研究。

  • 第9题:

    共用题干
    So Many"Earths"
    The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
    A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
    The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
    The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
    The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
    Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.

    The Earth is a planet orbiting in the Sun's habitable zone.
    A:Right
    B:Wrong
    C:Not mentioned

    答案:A
    解析:
    本篇文章只在第二段第一句表明,近来一次机械故障使开普勒太空望远镜不再为我们服务,并没有提到开普勒太空望远镜为我们服务了多少年。
    第二段最后一句表明,开普勒太空望远镜主要寻找与地球有相似环境的星球。
    第三段第二句表明,可让生命存在的星球的直径至少与地球的直径一样大,但不会超过地球直径的两倍。由此可推测出其不会比地球小,因此题干表述错误。
    第三段第三、四句表明,适合生命存在的星球必须与它所环绕的恒星有一个合适的距离,以保证星球表面的温度允许液态水存在,而地球正是适合人类居住的星球,而且地球是绕着太阳运行的。
    第四段第一句表明,这项新评估源于对超过4.2万颗星球的分析,而非源于对17万颗星球的分析。
    第五段第一句表明,研究者承认这项评估是粗糙的,即不精确的。
    文章第一段指出,这次的调查结果是新的发现,但通篇文章并未提到这是对可能有生命存在的星球的首次研究。

  • 第10题:

    共用题干
    So Many"Earths"
    The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
    A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
    The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
    The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
    The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
    Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.

    The main task of the Kepler space telescope is to find out planets with similar conditions to Earth's.
    A:Right
    B:Wrong
    C:Not mentioned

    答案:A
    解析:
    本篇文章只在第二段第一句表明,近来一次机械故障使开普勒太空望远镜不再为我们服务,并没有提到开普勒太空望远镜为我们服务了多少年。
    第二段最后一句表明,开普勒太空望远镜主要寻找与地球有相似环境的星球。
    第三段第二句表明,可让生命存在的星球的直径至少与地球的直径一样大,但不会超过地球直径的两倍。由此可推测出其不会比地球小,因此题干表述错误。
    第三段第三、四句表明,适合生命存在的星球必须与它所环绕的恒星有一个合适的距离,以保证星球表面的温度允许液态水存在,而地球正是适合人类居住的星球,而且地球是绕着太阳运行的。
    第四段第一句表明,这项新评估源于对超过4.2万颗星球的分析,而非源于对17万颗星球的分析。
    第五段第一句表明,研究者承认这项评估是粗糙的,即不精确的。
    文章第一段指出,这次的调查结果是新的发现,但通篇文章并未提到这是对可能有生命存在的星球的首次研究。

  • 第11题:

    单选题
    The sentence “Our planet has shrunk” underlined in Paragraph 1 means that __________.
    A

    the earth has become physically smaller

    B

    the more advanced ways of traveling has made the distance between countries shorter

    C

    the traditional concept of our planet has become out-of-date

    D

    modern means of communication has made it much easier for people to communicate with each other from different parts of the world


    正确答案: C
    解析:
    语义题。前一句指出“新科技以前所未有的形式将这个世界连接起来”。后一句又接着进行解释说“现在的世界变成了一个‘地球村’,因为电话、传真或卫星的连结,各国之间的联系在数秒之内便可完成”。由此可知划线部分“我们的星球‘缩小’了”指的是“现代通讯方式使得世界各地的人们之间的交流更方便了”。

  • 第12题:

    单选题
    Even most imaginative people have to admit that______.
    A

    human societies are as advanced as those on some other planets

    B

    planets other than Earth are not suitable for life like ours to stay

    C

    it is difficult to distinguish between organic parts and inorganic parts of the human body

    D

    organisms are more creative than machines


    正确答案: C
    解析:
    文章首段“Mars looks like the only planet where life like ours could exist,and even this is doubtful.”表达了对外星上是否有地球人的置疑,第五段“If this is the case,they may be much more tolerant of their environment,multiplying under conditions that would destroy immediately any organism made of carbon compounds and dependent on the familiar carbon cycle.”说明外星不适合现在的人类居住,故B项正确。

  • 第13题:

    根据下列内容,回答196-200题。
    If the population of the earth goes on increasing at its present rate, there will eventually notbe enough resources left to sustain life on the planet. By the middle of the 21st century, if presenttrends continue, we will have used up all the oil that drives our cars, for example. Even if scien-tists develop new ways of feeding the human race, the crowded conditions on earth will make itnecessary for us to look for open space somewhere else. But none of the other planets in our solarsystem are capable of supporting life at present. One possible solution to the problem, however,
    has recently been suggested by an American scientist, Professor Carl Sagan.
    Sagan believes that before the earth's resources are completely exhausted it will be possible tochange the atmosphere of Venus and so create a new world almost as large as earth itself. The dif-ficulty is that Venus is much hotter than the earth and there is only a tiny amount of water there.
    Sagan proposes that algae organisms, which can live in extremely hot or cold atmospheres andat the same time produce oxygen, should be bred in conditions similar to those on Venus. As soonas this has been done, the algae will be placed in small rockets. Spaceships will then fly to Venusand fire the rockets into the atmosphere. In a fairly short time, the algae will break down the car-bon dioxide into oxygen and carbon.
    When the algae have done their work, the atmosphere will become cooler, but before mancan set foot on Venus it will be necessary for the oxygen to produce rain. The surface of the planetwill still be too hot for men to land on it but the rain will eventually fall and in a few years some-thing like earth will be reproduced on Venus.
    In the long run, the most difficult problem caused by population growth on earth willprobably be the lack of __________.

    A.food
    B.oil
    C.space
    D.resources

    答案:C
    解析:
    由第一段可知,如果人口按照目前速度持续膨胀的话,地球上最终会缺乏资源来维持这么多的生命。即使科学家发明出替代资源。拥挤的人口也使我们不得不到其他星球寻找生存空间。但是目前太阳系还没有发现能维持生命的行星。因此和缺乏资源相比,缺乏生存空间才是最令人担忧、最难解决的问题。所以正确答案为C。

  • 第14题:

    共用题干
    Understanding Autism
    1. Autism(孤独症)is a life-long developmental disability that prevents individuals from properly understanding what they see,hear,and otherwise sense.This results in severe problems of social relationships , communication , and behavior. Individuals with autism have to painstakingly(费力地)learn normal patterns of speech and communication,and appropriate ways to relate to people, objects,and events,in a similar manner to those who have had a stroke.
    2. The cause of autism is still unknown.Some research suggests a physical problem affecting those parts of the brain that process language and information coming in from the senses.There may be some imbalance of certain chemicals in the brain. Genetic(遗传的)factors may sometimes be involved .Autism may indeed result from a combination of several"causes".
    3. Most people with mental retardation(智力迟钝)show relatively even skill development. Individuals with autism , however , typically show uneven skill development , with deficits(欠缺)in certamn areas-most frequently in their ability to communicate and relate to othersand distinct skills in other areas.It is important to distinguish autism from mental retardation or other disorders, since diagnostic(诊断的)confusion may lead to inappropriate and ineffective treatment techniques.
    4. In general,individuals with autism perform best at jobs which are structured and involve a degree of repetition.Some people who have autism are working as artists,piano tuners,painters,farm workers,office workers,computer operators,dishwashers,assembly line workers,or employees of sheltered workshops or other sheltered work settings.

    Paragraph 1______
    A: What causes autism?
    B: How common is autism?
    C: Does autism occur together with other disabilities?
    D: What is the difference between autism and mental retardation?
    E: What is autism?
    F: What kinds of jobs can individuals with autism do?

    答案:E
    解析:
    短文的第一段对孤独症进行了定义。


    短文的第二段主要探讨可能导致孤独症的原因。


    短文的第三段主要讲孤独症与智力迟钝之间的区别。


    短文的第四段主要讲孤独症患者适合从事的工作。


    短文的第一段说,患有孤独症的人尤其不擅长人际关系及与他人交流。


    短文的第二段说,孤独症有可能是若干原因综合作用的结果。


    短文的第三段说,处理孤独症的方法应有别于智力迟钝。


    短文的第三段说,患有孤独症者的典型特征之一是其技能发展方面的不平衡。

  • 第15题:

    共用题干
    第二篇

    Human and the Earth

    In terms of the evolution of life on Earth,human beings have just arrived.Despite their shori time on Earth,however,people have brought about enormous changes to the surface of the planet一changes far out of proportion to the interval of time they have occupied it.
    People have more control over their surroundings than any other species on Earth.With the combination of intelligence and manual skill(allowing us to make and use tools),people have found ways to use plant and animal resources,mineral ores,fuels,and many other materials and resources from the Earth.
    As the number of people on Earth increases,it becomes increasingly difficult for the population to survive on the resources of the land.The amount of land is limited.Although agricultural production can be increased by use of machinery such as tractors and the addition of fertilizer,the land ultimately can produce only so much food and no more.
    As the human population grows,people consume more.Clearly,some locations on Earth already have too many people;in many of these areas,future increases will surely bring about more poverty and suffering. Yet people in rich nations use proportionally far more of the available resources than people in poorer nations.As they consume these resources without restraint,they also waste large amounts of them.
    People are only a very small fraction of all the living things on the planet.Yet their numbers create a drain on resources that can't be renewed.For example,the amount of water on Earth is limited,this water is cleaned through natural processes.However,the natural processes for filtering water can clean only a certain amount of water by removing the pollution.Likewise,a limited amount of petroleum can be found under the Earth's surface.Petroleum is a valuable resource.Should people use it up to manufacture petrol for automobiles?As people work to control the planet and make life comfortable,are they using up resources that are needed for their survival?

    in terms of the evolution of life on Earth,the history of human beings is_______.
    A:very short
    B:very long
    C:as long as that of other animals
    D:as long as that of the Earth

    答案:A
    解析:
    文章第一段第一句话提到“就地球上生命的进化而言,人类是姗姗来迟者”,因此比较而言,人类的历史并不长。选项A是正确的。
    从文章第二段第二句话“With the combination of intelligence and manual skill...”我们知道选项A和B都是正确的,因此选择D项。
    文章第三段提到,土地的总量是有限的。虽然使用拖拉机等机械和施用化肥可以提高农业产量,但是土地最终所能产出的粮食只有那么多,不会再增加。因此只有选项C是正确的。
    文章第四段第三句说富裕国家的人们所使用的能源在比例上远远大于贫穷国家的人们。选项C中提到的“发达国家的人们”最符合题意。
    根据文章最后一段关于资源的描述我们可以发现选项A、B、C都是正确的,只有选项D的表述错误,因此选择D项。

  • 第16题:

    共用题干
    第二篇

    Human and the Earth

    In terms of the evolution of life on Earth,human beings have just arrived.Despite their shori time on Earth,however,people have brought about enormous changes to the surface of the planet一changes far out of proportion to the interval of time they have occupied it.
    People have more control over their surroundings than any other species on Earth.With the combination of intelligence and manual skill(allowing us to make and use tools),people have found ways to use plant and animal resources,mineral ores,fuels,and many other materials and resources from the Earth.
    As the number of people on Earth increases,it becomes increasingly difficult for the population to survive on the resources of the land.The amount of land is limited.Although agricultural production can be increased by use of machinery such as tractors and the addition of fertilizer,the land ultimately can produce only so much food and no more.
    As the human population grows,people consume more.Clearly,some locations on Earth already have too many people;in many of these areas,future increases will surely bring about more poverty and suffering. Yet people in rich nations use proportionally far more of the available resources than people in poorer nations.As they consume these resources without restraint,they also waste large amounts of them.
    People are only a very small fraction of all the living things on the planet.Yet their numbers create a drain on resources that can't be renewed.For example,the amount of water on Earth is limited,this water is cleaned through natural processes.However,the natural processes for filtering water can clean only a certain amount of water by removing the pollution.Likewise,a limited amount of petroleum can be found under the Earth's surface.Petroleum is a valuable resource.Should people use it up to manufacture petrol for automobiles?As people work to control the planet and make life comfortable,are they using up resources that are needed for their survival?

    What makes people feel hard to live on Earth?
    A:Fertilizer.
    B:Lse of machinery.
    C:Limited land.
    D:Limited mineral resources.

    答案:C
    解析:
    文章第一段第一句话提到“就地球上生命的进化而言,人类是姗姗来迟者”,因此比较而言,人类的历史并不长。选项A是正确的。
    从文章第二段第二句话“With the combination of intelligence and manual skill...”我们知道选项A和B都是正确的,因此选择D项。
    文章第三段提到,土地的总量是有限的。虽然使用拖拉机等机械和施用化肥可以提高农业产量,但是土地最终所能产出的粮食只有那么多,不会再增加。因此只有选项C是正确的。
    文章第四段第三句说富裕国家的人们所使用的能源在比例上远远大于贫穷国家的人们。选项C中提到的“发达国家的人们”最符合题意。
    根据文章最后一段关于资源的描述我们可以发现选项A、B、C都是正确的,只有选项D的表述错误,因此选择D项。

  • 第17题:

    共用题干
    Understanding Autism
    1. Autism(孤独症)is a life-long developmental disability that prevents individuals from properly understanding what they see,hear,and otherwise sense.This results in severe problems of social relationships , communication , and behavior. Individuals with autism have to painstakingly(费力地)learn normal patterns of speech and communication,and appropriate ways to relate to people, objects,and events,in a similar manner to those who have had a stroke.
    2. The cause of autism is still unknown.Some research suggests a physical problem affecting those parts of the brain that process language and information coming in from the senses.There may be some imbalance of certain chemicals in the brain. Genetic(遗传的)factors may sometimes be involved .Autism may indeed result from a combination of several"causes".
    3. Most people with mental retardation(智力迟钝)show relatively even skill development. Individuals with autism , however , typically show uneven skill development , with deficits(欠缺)in certamn areas-most frequently in their ability to communicate and relate to othersand distinct skills in other areas.It is important to distinguish autism from mental retardation or other disorders, since diagnostic(诊断的)confusion may lead to inappropriate and ineffective treatment techniques.
    4. In general,individuals with autism perform best at jobs which are structured and involve a degree of repetition.Some people who have autism are working as artists,piano tuners,painters,farm workers,office workers,computer operators,dishwashers,assembly line workers,or employees of sheltered workshops or other sheltered work settings.

    A typical feature of people with autism is their uneven______.
    A: different techniques
    B: social relationships and communication
    C: language and information
    D: several causes working together
    E: a degree of repetition
    F: skill development

    答案:F
    解析:
    短文的第一段对孤独症进行了定义。


    短文的第二段主要探讨可能导致孤独症的原因。


    短文的第三段主要讲孤独症与智力迟钝之间的区别。


    短文的第四段主要讲孤独症患者适合从事的工作。


    短文的第一段说,患有孤独症的人尤其不擅长人际关系及与他人交流。


    短文的第二段说,孤独症有可能是若干原因综合作用的结果。


    短文的第三段说,处理孤独症的方法应有别于智力迟钝。


    短文的第三段说,患有孤独症者的典型特征之一是其技能发展方面的不平衡。

  • 第18题:

    Passage Four
    Ideasabout polite behaviour differ from one culture to another.Some societies,such asAmerica and Australia,for example,are mobile and veryopen.People here change jobs and move house quiteoften.As a m result,they have a lot of relationships that often last only mashort time,and they need to get to know people quickly.So it′s normal to havefriendly conversations with people that they have just met,and you can talk aboutthings that other cultures would regard as personal.
    On the other hand,there are more crowded and less mobile societies where long-termrelationships are more important.A Malaysian or Mexican business person,for example,willwant to get to know you very well before he or she feels happy to startbusiness.But when you do get to know each other,the relationship becomes muchdeeper than it would in a mobile society.
    To Americans,both Europeans and Asians seem cool and formal atfirst.On the other hand,as a passenger from a less mobile society puts it,it′s no fun spending several hours next to a stranger who wants to tell you allabout his or her life and asks you all sorts of questions that you don′t want to answer.
    Cross-cultural differences aren′t just a problem for travelers,but also for people in daily life.Some societies have"universalist′′cultures.These societies strongly respect rules,and they treat every personand situation in basically the same way."Particularist"(强调特性的)societies also have rules,but they are less important than thesociety′s unwritten ideas about what is right or wrong for a particularsituation or a particular person.So the normal rules are changed to fit theneeds of the situation or the importance of the person.

    What is the main idea of this passage?

    A.Polite behaviour varies with differentcultures.
    B.Less mobile societies have fewer rules.
    C.People from mobile societies are morepolite.
    D.Cultural differences are important.

    答案:A
    解析:

  • 第19题:

    Passage Four
    Ideasabout polite behaviour differ from one culture to another.Some societies,such asAmerica and Australia,for example,are mobile and veryopen.People here change jobs and move house quiteoften.As a m result,they have a lot of relationships that often last only mashort time,and they need to get to know people quickly.So it′s normal to havefriendly conversations with people that they have just met,and you can talk aboutthings that other cultures would regard as personal.
    On the other hand,there are more crowded and less mobile societies where long-termrelationships are more important.A Malaysian or Mexican business person,for example,willwant to get to know you very well before he or she feels happy to startbusiness.But when you do get to know each other,the relationship becomes muchdeeper than it would in a mobile society.
    To Americans,both Europeans and Asians seem cool and formal atfirst.On the other hand,as a passenger from a less mobile society puts it,it′s no fun spending several hours next to a stranger who wants to tell you allabout his or her life and asks you all sorts of questions that you don′t want to answer.
    Cross-cultural differences aren′t just a problem for travelers,but also for people in daily life.Some societies have"universalist′′cultures.These societies strongly respect rules,and they treat every personand situation in basically the same way."Particularist"(强调特性的)societies also have rules,but they are less important than thesociety′s unwritten ideas about what is right or wrong for a particularsituation or a particular person.So the normal rules are changed to fit theneeds of the situation or the importance of the person.

    Who do Malaysians prefer to startbusiness with according to the passage?

    A.Those who talk a lot about themselves.
    B.Those who they know well enough.
    C.Those who enjoy talking with strangers.
    D.Those who want to do business withthem.

    答案:B
    解析:

  • 第20题:

    共用题干
    So Many"Earths"
    The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
    A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
    The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
    The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
    The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
    Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.

    The new finding is based on a thorough study of 170,000 stars in the Milky Way.
    A:Right
    B:Wrong
    C:Not mentioned

    答案:B
    解析:
    本篇文章只在第二段第一句表明,近来一次机械故障使开普勒太空望远镜不再为我们服务,并没有提到开普勒太空望远镜为我们服务了多少年。
    第二段最后一句表明,开普勒太空望远镜主要寻找与地球有相似环境的星球。
    第三段第二句表明,可让生命存在的星球的直径至少与地球的直径一样大,但不会超过地球直径的两倍。由此可推测出其不会比地球小,因此题干表述错误。
    第三段第三、四句表明,适合生命存在的星球必须与它所环绕的恒星有一个合适的距离,以保证星球表面的温度允许液态水存在,而地球正是适合人类居住的星球,而且地球是绕着太阳运行的。
    第四段第一句表明,这项新评估源于对超过4.2万颗星球的分析,而非源于对17万颗星球的分析。
    第五段第一句表明,研究者承认这项评估是粗糙的,即不精确的。
    文章第一段指出,这次的调查结果是新的发现,但通篇文章并未提到这是对可能有生命存在的星球的首次研究。

  • 第21题:

    共用题干
    So Many"Earths"
    The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
    A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
    The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
    The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
    The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
    Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.

    This is the first research finding about the planets with a chance for life.
    A:Right
    B:Wrong
    C:Not mentioned

    答案:C
    解析:
    本篇文章只在第二段第一句表明,近来一次机械故障使开普勒太空望远镜不再为我们服务,并没有提到开普勒太空望远镜为我们服务了多少年。
    第二段最后一句表明,开普勒太空望远镜主要寻找与地球有相似环境的星球。
    第三段第二句表明,可让生命存在的星球的直径至少与地球的直径一样大,但不会超过地球直径的两倍。由此可推测出其不会比地球小,因此题干表述错误。
    第三段第三、四句表明,适合生命存在的星球必须与它所环绕的恒星有一个合适的距离,以保证星球表面的温度允许液态水存在,而地球正是适合人类居住的星球,而且地球是绕着太阳运行的。
    第四段第一句表明,这项新评估源于对超过4.2万颗星球的分析,而非源于对17万颗星球的分析。
    第五段第一句表明,研究者承认这项评估是粗糙的,即不精确的。
    文章第一段指出,这次的调查结果是新的发现,但通篇文章并未提到这是对可能有生命存在的星球的首次研究。

  • 第22题:

    单选题
    The greatest chance for the existence of extraterrestrial life is on a planet beyond our solar system. The Milky Way galaxy alone contains 100 billion other suns, many of which could be accompanied by planets similar enough to Earth to make them suitable abodes of life.  The statement above assumes which of the following?
    A

    Living creatures on another planet would probably have the same appearance as those on Earth.

    B

    Life cannot exist on other planets in our solar system.

    C

    If the appropriate physical conditions exist, life is an inevitable consequence.

    D

    More than one of the suns in the galaxy is accompanied by an Earth-like planet.

    E

    It is likely that life on another planet would require conditions similar to those on Earth.


    正确答案: E
    解析:
    文段从其他行星与地球环境相似,推出其他行星上有生命存在的结论,所以可知作者暗示生命体的存在需要和地球相类似的生存条件,故本题应选E项。

  • 第23题:

    单选题
    Even most imaginative people have to admit that _____.
    A

    human societies are as advanced as those on some other planets

    B

    planets other than Earth are not suitable for life like ours to stay

    C

    it is difficult to distinguish between organic parts and inorganic parts of the human body

    D

    organisms are more creative than machines


    正确答案: D
    解析:
    文章首段“Mars looks like the only planet where life like ours could exist, and even this is doubtful.”表达了对外星球上是否有地球人的置疑,第五段“If this is the case, they may be much more tolerant of their environment, multiplying under conditions that would destroy immediately any organism made of carbon compounds and dependent on the familiar carbon cycle.”说明外星球不适合现在的人类居住,故B项正确。

  • 第24题:

    单选题
    What does the underlined word “cheer” (Para. 1) imply?
    A

    Imaginative men are sure of success in finding life on other planets.

    B

    Imaginative men are delighted to find life on other planets.

    C

    Imaginative men are happy to find a different kind of life existing on other planets.

    D

    Imaginative men can be pleased with the idea that there might exist different forms of life on other planets.


    正确答案: C
    解析:
    cheer意为“使…快活,使…欢呼”,但为什么富有想像力的人会感到欢欣鼓舞?文章第一句“When imaginative men…cheer themselves by remembering that life need not resemble closely the life that exists on Earth.”故D项符合题意。