Why are the lions in the Git Forest especially vulnerable to disease?A．They are physically weaker than the African lions.B．They are small in size.C．They do not have enough to eat.D．They have descended from a dozen or so ancestors.
题目
Why are the lions in the Git Forest especially vulnerable to disease?
A．They are physically weaker than the African lions.
B．They are small in size.
C．They do not have enough to eat.
D．They have descended from a dozen or so ancestors.
相似考题
更多“Why are the lions in the Git Forest especially vulnerable to disease?A．They are physically weaker than the African lions.B．They are small in size.C．They do not have enough to eat.D．They have descended from a dozen or so ancestors.”相关问题
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第1题：
People who suffer from astigmatism
A. have a curable disease in their eyes
B. have eyes that are not exactly the right shape
C. have a difficulty that can be corrected by an operation
D. have an eye difficulty that cannot be corrected by glasses
正确答案：B43．答案为B 此考题为细节题。根据第4段第1句Other people do not see clearly because their eyes are not exactly the right shape．They have what is called astigmatism，就可以断定B正确。
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第2题：
Why do experts say twins are more alike than clones would be?
A、They have at least shared the same environment within the mother.
B、They have the same genes.
C、They are usually raised in the same family.
D、They have the same interests.
参考答案：AC
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第3题：
Why should banks need to establish formal operating procedures?
A．The supervisory authorities require them to do so.
B．The shareholders expect a reasonable return on their investment.
C．The banks have to keep safe large volume of monetary items raised from all sources.
D．The banks engage in a large volume and variety of transactions.
正确答案：C
解析：文章第一段提到Banking organizations have custody of large volume...individual discretion rigorous system of internal control. 银行监管大量的货币项目，如果管理不慎，这些monetary items就会遭到破坏，所以就需要建立一套完整的操作程序。因而C选项符合题意。 -
第4题：
For years people have been saying that the railways are dead. We all keep hearing that trains are slow, that they lose money, that they’re dying. But this is far from the true. In these days of expensive oil, the railways have become highly competitive with motorcars and planes. If you want to carry people or goods from place to place, they’re cheaper than planes. And they have much in common with planes. A plane goes in a straight line and so does a railway. What is more, a railway takes you from the heart of a city center. It doesn’t hold you up as a car does, in endless traffic jams. And a single train can carry goods which no plane or motorcar could ever do.
Far from being dead, the railways are very much alive. Modern railway lines give you a smooth, untroubled journey. Where else can you eat well, sleep in comfort, feel safe and enjoy the scene while you are traveling at speed at the same time? And we are only at the beginning. For we have just entered the age of super-fast trains, trains traveling at 150 miles an hour and more. Soon we will be wondering why we spent so much on motorways we can’t use because we have not enough money to buy the oil and planes we can’t fly in for the same reason.
1. Some people think the railways are dead for many reasons EXCEPT that ____.
A. planes and motorcars have taken the place of trains
B. oil is expensive today
C. trains are slow
D. railways lose money
2. The writers idea seems to be that ______.
A. we can do without railways
B. trains have much in common with motorcars and planes
C. motorcars and planes are not as good as trains
D. trains are as good as motorcars and planes
3. According to the writer, which of the following is NOT the advantage of railways?
A. It is cheaper to travel by train than by plane.
B. Super-fast trains travel even faster than planes.
C. The railway station is usually at the center of a city.
D. A train carries more goods than a motorcar or plane does.
4. The writer thinks that the railways, far from being dead, are very much alive because ___________.
A. we can have a smooth and untroubled journey
B. we’ll not have enough money to fly everywhere
C. we can now travel in super-fast trains
D. all of the above
5. The best title for this passage may be ________.
A. The Best Choice: Train, Motorcar or Plane
B. The Dying Railways
C. Super-fast Trains in the Future
D. Not the End, But the Beginning
正确答案：1.B2.D3.C4.D5.D
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第5题：
From what you _____, you can understand why an object weighs less in water than in air.
A、had learnt
B、will learn
C、have learnt
D、can learn
参考答案：C
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第6题：
According to Allen, why did the people do better with pets around when l~cing stressful tasks?
A．They have lower blood pressure.
B．They become more patient.
C．They are less nervous.
D．They are in higher spirits.
正确答案：C
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第7题：
—David has made great progress recently. —_______， and _______. A. So he has；so you have B. So he has；so have you C. So he has；so do you D. So has he；so you have
正确答案：B
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第8题：
共用题干
Common-cold Sense
You can't beat it,but you don't have to join it.Maybe it got the name"common cold"because it's more common in winter.The fact is,though,being cold doesn't have anything to do with getting one.Colds are caused by the spread of rhinoviruses,and,at least so far,medical science is better at telling you how to avoid getting one than how to get rid of one.
Children are the most common way cold viruses are spread to adults,because they have more colds than adults-an average of about eight per year.Why do kids seem so much more easily to get colds than their parents?Simple.They haven't had the opportunity to become immune to many cold viruses.
There are more than 150 different cold viruses,and you never have the same one twice.being infected by one makes you immune to it-but only it.
Colds are usually spread by direct contact,not sneezing or coughing.From another person's hand to your hand and then to your nose or eyes is the most common route.The highest concentration of cold viruses anywhere is found under the thumbnails of a boy,although the viruses can survive for hours on skin or other smooth surfaces.
Hygiene is your best defense.Wash your hands frequently,preferably with a disinfectant soap,especially when children in your household have colds.
But even careful hygiene won't ward off every cold.So,what works when a coughing,sneezing, runny nose strikes?
The old prescription of two aspirins,lots of water,and bed rest is a good place to start.But you'll also find some of the folk remedies worth trying.Hot mixtures of sugar(or honey),lemon,and water have real benefits.The best way to keep yourself from getting cold is
A:to keep yourself clean
B:to use a disinfectant soap
C:to take two aspirins every day
D:to drink lots of water答案：A解析：由文章第一段最后一句可知，感冒是由于一种鼻病毒的传播而引起的，故选B。
由文章第五段第一句可知，保持卫生是应对感冒的最好防御，故选A。
由文章第二段最后一句可知，儿童对很多病毒还不具有免疫性，因此他们更易患感冒。故选B。
由文章第三段内容可知，一个人绝不会被同一种感冒病毒感染两次，和C项的表述内容相符，故选C。
由文章倒数第二段第二句的内容可知， 当一个人患感冒时，会出现咳嗽.打喷嚏以及流鼻涕的症状，而未提及有胃疼症状，故选D。 -
第9题：
Why should the companies be careful about investment deals?A.They do not help build a customer base
B.They give too much power to the investor
C.They do not give the company enough money
D.They encourage the company to merge or sell答案：B解析：第2段第l句提到把公司经营的控制权交给投资者们是一个问题。故选B。 -
第10题：
共用题干
Weight on and off the Earth We are so used to.our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted.Because we can feel that things are heavy,we think of "weight"as being a fixed quality in an object,but it is not really fixed at all.If you could take a one-pound packet of butter 4,000 miles out from the earth,it would weigh only a quarter of a pound. Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space?The reason is this:all objects have a natural attraction for all other objects;this is called gravitational attraction.But this power of attraction between two obects gets weaker as they get farther apart.When the butter was at the surface of the earth,it was 4,000 miles from the center.When we took the butter 4,000 miles out,it was 8,000 miles from the center,which is twice the distance.If you double the distance between two objects,their gravitational attraction decreases two times two.If you treble the distance, it gets nine times weaker(three times three)and so on. So this is one of the first things we need to remember that the weight of an object in space is not the same as its weight on the surface of the earth. What about the weight of our pound of butter on the surface of the moon?At the distance the puii of the earth is about 4,000 times smaller than it is here on the surface,so we can forget all about the earth-pull on our butter. On the other hand,on the moon there will be an attraction between the butter and the moon,but the butter will weigh only about one-sixth as much as it does on the earth.This is because the moon is so much smaller than the earth.The amount of gravitational pull that a body produces depends on the amount of material in it.A packet of butter has a gravitational pull of its own;but this is very small in relation to the pull of something as large as the moon,or the earth,or the sun.We do not feel the gravitational pull of a packet of butter because
A:it is too small to have a gravitational pull of its own
B:its puil is so small that we tend to ignore it
C:its pui1 disappears in the presence of the earth's gravitation
D:it tends to melt and loses its gravitational puli答案：B解析：第一段最后一句表明，1磅重的黄油在离地球表面4000英里处重达0.25磅，第二段第一句也表明在4000英里高空处的物体重量仅为其在地球表面的重量的1/4。由此可推算出，4磅重的茶叶在离地球表面4000英里处重达1磅。
第一段第一句表明，我们之所以不能打破固有思维，是因为我们已经习惯了地球上的生活，也就是说，我们正是因为太过熟悉地球上的事物，才没有去质疑这些固有思维。
第一段第二句表明，物体的重量并非固定不变。第二段解释说，物体的重量源于物体间的引力。也就是说，物体的重量随着物体间引力的改变而改变。
最后一段第三句说明一个物体产生的引力与物体本身的重量有关。最后一段第四句又表明由于本身重量较小，一包黄油产生的引力很有限，相对于月球、地球、太阳等产生的强劲引力来说，比较容易被我们忽略。
本篇文章通篇讲的是重量是由引力产生的，并进一步阐述了物体间引力的变化、物体本身的重量，以及物体间的距离这三者之间的关系，主要讲的还是引力对重量的作用。 -
第11题：
单选题According to the passage, people have difficulty getting to sleep because ______.Athey work more than sixty hours a week
Bthey have too many enemies
Cthey do not sleep happily
Dthey are not tired enough
正确答案： C解析：
文章首段指出据爱丁堡大学的Dr. Ian Oswald称世界上十分之一的人都入睡困难，原因很简单，大多数人睡不着觉是因为自身问题：他们睡得太早了。也就是说身体还不累就睡觉了，故D项符合题意。 -
第12题：
填空题Why do more Americans have to drive to work?Because they have moved out of the ____to the suburbs.正确答案： large cities解析：
细节题。从听力原文中“Many people have moved outside of the large cities to the suburbs”一句可以判断，此处应该填large cities。 -
第13题：
—________________ , but I still have the feeling that it's not safe enough. —I couldn't agree more. That's why I only do street shopping.A Paying online is much unsafe than before ;
B Paying online is less safer than before ;
C Paying online is much safer than before
参考答案：C
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第14题：
What will they do at 2:30 tomorrow afternoon ()A.They’ll meet the guests.
B.They’ll have trade fairs.
C. They’ll have a board meeting.
参考答案：C
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第15题：
What a waste! Why do you () the water () all the time ?A、have…flowing
B、have…flow
C、have…to flow
D、have…flowed
参考答案：A
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第16题：
A:I am from England.
B: ( ).
A. So am I
B. So do I
C. So have I
正确答案：A
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第17题：
Why are you working in a field other than the one in which you have a degree?
正确答案：
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第18题：
—Why didn‘t you buy a new car？ —I would have bought one if I _______ enough money. A. had B. have had C. would have D. had had
正确答案：D
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第19题：
共用题干
第二篇
Natural Medicines
Since earliest days,humans have used some kinds of medicines.We know this because humans have
survived.Ancient treatments for injury and disease were successful enough to keep humans from dying out
completely.
They were successful long before the time of modern medicine.Before the time of doctors with white
coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.
Many parts of the world still do not have university-educated doctors. Nor do they have expensive hospi-
tals.Yet injuries are treated.And diseases are often cured.How?By ancient methods.By medicines that
might seem mysterious , even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,
however.
Through the centuries, tribal（部族的）medicine men experimented with plants. They found many use-
ful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure
for some of today's most serious diseases.
Experts say almost 80% of the people in the world use plants for health care.These natural medicines
are used not just because people have no other form of treatment.They are used because people trust them.
In developed areas,few people think about the source of the medicines they buy in a store.Yet many wide-
ly-used medicines are from ancient sources,especially plants.Some experts say more than 25% of modern
medicines come,in one way or another,from nature.
Scientists have long known that nature is really a chemical factory.All living things contain chemicals
that help them survive.So scientists' interest in traditional medicine is not new.But it has become an ur-
gent concern.This is because the earth's supply of natural medicines may be dropping rapidly.The passage indicates that ancient treatments for injury and disease were_________.
A:much more successful than modern ones
B:successful enough for humans to survive
C:successful in all cases
D:of little help to humans答案：B解析：由文章第一段第二句话可知，古代的医疗手段已经足以让人类免于完全灭亡，即生存 下去。故选B。
由文章第三段可知，现在世界上的很多地方仍然没有高学历的医生，也没有治疗费昂贵的医院，但这些地方的人们仍有办法治疗疾病。他们仍然使用古老的医疗办法来治病。故 选A。
由文章第四段最后一句话可知，科学家们相信这些古老的医疗手段可能会给现今最严 重的疾病提供治愈方法。故选B。
由文章第五段第一句话可知，专家们说世界上80％的人们在用植物草药做医疗保健。 故选D。或者根据文章主题（文章标题Natural Medicine）直接选择答案。
由文章最后一段最后一句话，可知地球上的天然药物的供给量可能会急速下降。故 选B。第三篇 本篇文章主要讲述了人类为了改善生活使用技术工具改变了地球的自然面貌，在给自己带 来便利的同时却污染了环境，影响了生态平衡。 -
第20题：
共用题干
Common-cold Sense
You can't beat it,but you don't have to join it.Maybe it got the name"common cold"because it's more common in winter.The fact is,though,being cold doesn't have anything to do with getting one.Colds are caused by the spread of rhinoviruses,and,at least so far,medical science is better at telling you how to avoid getting one than how to get rid of one.
Children are the most common way cold viruses are spread to adults,because they have more colds than adults-an average of about eight per year.Why do kids seem so much more easily to get colds than their parents?Simple.They haven't had the opportunity to become immune to many cold viruses.
There are more than 150 different cold viruses,and you never have the same one twice.being infected by one makes you immune to it-but only it.
Colds are usually spread by direct contact,not sneezing or coughing.From another person's hand to your hand and then to your nose or eyes is the most common route.The highest concentration of cold viruses anywhere is found under the thumbnails of a boy,although the viruses can survive for hours on skin or other smooth surfaces.
Hygiene is your best defense.Wash your hands frequently,preferably with a disinfectant soap,especially when children in your household have colds.
But even careful hygiene won't ward off every cold.So,what works when a coughing,sneezing, runny nose strikes?
The old prescription of two aspirins,lots of water,and bed rest is a good place to start.But you'll also find some of the folk remedies worth trying.Hot mixtures of sugar(or honey),lemon,and water have real benefits.When one is having a cold,he may often have all the following symptoms EXCEPT______.
A:coughing
B:sneezing
C:having a runny nose
D:having a stomachache答案：D解析：由文章第一段最后一句可知，感冒是由于一种鼻病毒的传播而引起的，故选B。
由文章第五段第一句可知，保持卫生是应对感冒的最好防御，故选A。
由文章第二段最后一句可知，儿童对很多病毒还不具有免疫性，因此他们更易患感冒。故选B。
由文章第三段内容可知，一个人绝不会被同一种感冒病毒感染两次，和C项的表述内容相符，故选C。
由文章倒数第二段第二句的内容可知， 当一个人患感冒时，会出现咳嗽.打喷嚏以及流鼻涕的症状，而未提及有胃疼症状，故选D。 -
第21题：
共用题干
Natural Medicines
Since earliest days,humans have used some kinds of medicines.We know this because hu-mans have survived .Ancient treatments for injury and disease were successful enough to keep hu-mans from dying out completely.
They were successful long before the time of modern medicine.Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.
Many parts of the world still do not have university-educated doctors.Nor do they have ex- pensive hospitals.Yet injuries are treated.And diseases are often cured.How?By ancient meth- ods. By medicines that might seem mysterious, even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,however.
Through the centuries, tribal（部落的）medicine men experimented with plants. They found many useful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure for some of today's most serious diseases.
Experts say almost 80%of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment.They are used be-cause people trust them.In developed areas,few people think about the source of the medicines they buy in a store.Yet many widely-used medicines are from ancient sources,especially plants. Some experts say more than 25%of modern medicines come,in one way or another,from nature.
Scientists have long known that nature is really a chemical factory.All living things contain chemicals that help them survive .So scientists' interest in traditional medicine is not new.But it has become an urgent concern.This is because the earth's supply of natural medicines may be dropping rapidly.The passage indicates that ancient treatments for injury and disease were_____.
A: much more successful than modern ones
B: successful enough for humans to survive
C: successful in all cases
D: of little help to humans答案：B解析：第一段“…successful enough to keep humans from dying out completely”（有效地使人类免于完全消亡）与选项B“ successful enough for humans to survive”（有效地使人类生存下来）意思一样。短文中并没有对选项A的内容做比较，实际上也不可能笼统地做这种比较。选项C和D凭常识也能做出判断，绝对肯定和绝对否定都是错误的。
第三段第一句和第二句对选项A中的“all over the world”作了否定，而其他三个选项的内容在短文中都直接或间接谈到：选项B的内容在第二段最后一句和第三段第一句、第二句都间接提到，我们自然会想到，大医院有现代化的医疗设备，有经过高等教育的医生，有现代化的药品，看病的价格当然昂贵；第三段最后一句的内容与选项C的文字完全相同；第一段第一句的内容与选项D的内容也相同。
第四段最后一句提供了本问题的答案，两处除了句子结构不同以外，文字完全相同。其他三个选项的内容短文都没有提及，根据常识判断也可以知道它们不是正确答案。
第五段第一句直接提供了本题的答案。
短文最后一句直接提供了本问题的答案，其他三个选项均与此完全相反。 -
第22题：
They are（）children because they do not have enough to eat.
AUnhealthy
Binhealthy
Cinhealth
Dunhealth
A
略 -
第23题：
单选题As it turned out to be a small house party, we _____ so formally.Aneed not have dressed
Bmust not have dressed
Cneed not dress
Dmust not dress
正确答案： A解析：
句意：结果是那只是一个小型的家庭聚会而已，我们本可以不打扮得如此正式的。need not不必(做某事)。must not禁止，不准(做某事)。此句表示已经发生的事情，因此用完成时，隐含一种后悔的心情。