更多“单选题What is the best way to reduce the amount of soot?A Installing exhaust filters on all trucks and buses.B Better managing forest fires.C Getting Americans to give up SUVs.D Melting snow and ice.”相关问题
  • 第1题:

    29. What's the purpose of the passage?

    A. To give some advice on how to lose weight.

    B. To advise people to eat apples every day.

    C. To tell people how to enjoy a better life.

    D. To advise people to give up bad habits.


    正确答案:A
    29.A【解析】由全文可知“这篇文章主要介绍了减肥的一些方祛、建议”,故选A。

  • 第2题:

    共用题干
    New research from NASA scientists suggests emissions of black soot after the way sunlight re- flects off snow.According to a computer simulation,black soot may be responsible for 25 percent of observed global warming over the past century. Soot in the higher latitudes(维度)of the Earth,where ice is more common , absorbs more of the sun's energy and warmth than an icy,white background. Dark-colored black carbon,or soot, absorbs sunlight,while lighter colored ice reflects sunlight.
    Soot in areas with snow and ice may play an important role in climate change.Also,if snow and ice covered areas begin melting,the warming effect increase,as the soot becomes more con-centrated on the snow surface.“This provides a positive feedback,as glaciers and ice sheets melt, they tend to get even dirtier.”said Dr. James Hansen,a researcher at NASA's Goddard Institute for Space Studies,New York.
    Hansen found soot's effect on snow albedo(反照率),which may be contributing to trends to-ward early springs in the Northern Hemisphere,such as thinning Arctic sea ice and melting glac-iers permafrost. Soot also is believed to play a role in changes in the atmosphere above the oceans and land.
    “Black carbon reduces the amount of energy reflected by snow back into space,thus heating the snow surface more than if there were no black carbon,”Hansen said. Soot's increased absorp-tion of solar energy is especially effective in warming the world's climate.“ This forcing is unusual-ly effective,causing twice as much global warming as a carbon-dioxide forcing of the same magni-tude.”Hansen noted.
    Hansen cautioned,although the role of soot in altering global climate is substantial,it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century .Such gases are expected to be the largest climate forcing for the rest of the century.
    The researchers found that observed warming in the Northern Hemisphere was large in the winter and spring at middle and high latitudes. These observations were coherent with the researchers' climate model situations,which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.

    What is the main cause of climate warming during the past century?
    A: Soot.
    B: Snow.
    C: Greenhouse gases.
    D:.Wind.

    答案:C
    解析:
    文章第二段最后一句“…while lighter colored ice reflects sunlight.”说浅色的冰反射太阳光,而黑色的煤烟灰并不反射。其他三项在文章一、二段都有提到,故本题选C。


    根据第五段首句“Black carbon reduces the amount of energy reflected by snow back in-to space, thus heating the snow surface more than if there were no black carbon,”可知,黑炭覆盖的地区有更强烈的加热效果。故本题选B。


    第五段中的“This forcing”指的是其前面所说的“Soot's increased absorption of solar energy”。因此本题选B。


    根据第六段“…it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century.”可知,温室气体是上世纪气候变暖的首要原因,故选C。


    由最后一段最后一句“…which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.”知,部分大规模的温室效应发生在有厚雪覆盖层和阳光强烈的地方。故本题选C。

  • 第3题:

    共用题干
    New research from NASA scientists suggests emissions of black soot after the way sunlight re- flects off snow.According to a computer simulation,black soot may be responsible for 25 percent of observed global warming over the past century. Soot in the higher latitudes(维度)of the Earth,where ice is more common , absorbs more of the sun's energy and warmth than an icy,white background. Dark-colored black carbon,or soot, absorbs sunlight,while lighter colored ice reflects sunlight.
    Soot in areas with snow and ice may play an important role in climate change.Also,if snow and ice covered areas begin melting,the warming effect increase,as the soot becomes more con-centrated on the snow surface.“This provides a positive feedback,as glaciers and ice sheets melt, they tend to get even dirtier.”said Dr. James Hansen,a researcher at NASA's Goddard Institute for Space Studies,New York.
    Hansen found soot's effect on snow albedo(反照率),which may be contributing to trends to-ward early springs in the Northern Hemisphere,such as thinning Arctic sea ice and melting glac-iers permafrost. Soot also is believed to play a role in changes in the atmosphere above the oceans and land.
    “Black carbon reduces the amount of energy reflected by snow back into space,thus heating the snow surface more than if there were no black carbon,”Hansen said. Soot's increased absorp-tion of solar energy is especially effective in warming the world's climate.“ This forcing is unusual-ly effective,causing twice as much global warming as a carbon-dioxide forcing of the same magni-tude.”Hansen noted.
    Hansen cautioned,although the role of soot in altering global climate is substantial,it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century .Such gases are expected to be the largest climate forcing for the rest of the century.
    The researchers found that observed warming in the Northern Hemisphere was large in the winter and spring at middle and high latitudes. These observations were coherent with the researchers' climate model situations,which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.

    The largest warming effects happened in the Northern Hemisphere with_____.
    A: thin sea ice and insufficient sunlight
    B: light、 snow cover and sufficient sunlight
    C: heavy snow cover and sufficient sunlight
    D:.thick sea ice and sufficient sunlight

    答案:C
    解析:
    文章第二段最后一句“…while lighter colored ice reflects sunlight.”说浅色的冰反射太阳光,而黑色的煤烟灰并不反射。其他三项在文章一、二段都有提到,故本题选C。


    根据第五段首句“Black carbon reduces the amount of energy reflected by snow back in-to space, thus heating the snow surface more than if there were no black carbon,”可知,黑炭覆盖的地区有更强烈的加热效果。故本题选B。


    第五段中的“This forcing”指的是其前面所说的“Soot's increased absorption of solar energy”。因此本题选B。


    根据第六段“…it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century.”可知,温室气体是上世纪气候变暖的首要原因,故选C。


    由最后一段最后一句“…which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.”知,部分大规模的温室效应发生在有厚雪覆盖层和阳光强烈的地方。故本题选C。

  • 第4题:

    共用题干
    New research from NASA scientists suggests emissions of black soot after the way sunlight re- flects off snow.According to a computer simulation,black soot may be responsible for 25 percent of observed global warming over the past century. Soot in the higher latitudes(维度)of the Earth,where ice is more common , absorbs more of the sun's energy and warmth than an icy,white background. Dark-colored black carbon,or soot, absorbs sunlight,while lighter colored ice reflects sunlight.
    Soot in areas with snow and ice may play an important role in climate change.Also,if snow and ice covered areas begin melting,the warming effect increase,as the soot becomes more con-centrated on the snow surface.“This provides a positive feedback,as glaciers and ice sheets melt, they tend to get even dirtier.”said Dr. James Hansen,a researcher at NASA's Goddard Institute for Space Studies,New York.
    Hansen found soot's effect on snow albedo(反照率),which may be contributing to trends to-ward early springs in the Northern Hemisphere,such as thinning Arctic sea ice and melting glac-iers permafrost. Soot also is believed to play a role in changes in the atmosphere above the oceans and land.
    “Black carbon reduces the amount of energy reflected by snow back into space,thus heating the snow surface more than if there were no black carbon,”Hansen said. Soot's increased absorp-tion of solar energy is especially effective in warming the world's climate.“ This forcing is unusual-ly effective,causing twice as much global warming as a carbon-dioxide forcing of the same magni-tude.”Hansen noted.
    Hansen cautioned,although the role of soot in altering global climate is substantial,it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century .Such gases are expected to be the largest climate forcing for the rest of the century.
    The researchers found that observed warming in the Northern Hemisphere was large in the winter and spring at middle and high latitudes. These observations were coherent with the researchers' climate model situations,which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.

    Which of the following areas shows a greater warming effect?
    A: Ice sea areas.
    B: Areas with black carbon.
    C: Areas covered with white snow.
    D: Melting glaciers.

    答案:B
    解析:
    文章第二段最后一句“…while lighter colored ice reflects sunlight.”说浅色的冰反射太阳光,而黑色的煤烟灰并不反射。其他三项在文章一、二段都有提到,故本题选C。


    根据第五段首句“Black carbon reduces the amount of energy reflected by snow back in-to space, thus heating the snow surface more than if there were no black carbon,”可知,黑炭覆盖的地区有更强烈的加热效果。故本题选B。


    第五段中的“This forcing”指的是其前面所说的“Soot's increased absorption of solar energy”。因此本题选B。


    根据第六段“…it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century.”可知,温室气体是上世纪气候变暖的首要原因,故选C。


    由最后一段最后一句“…which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.”知,部分大规模的温室效应发生在有厚雪覆盖层和阳光强烈的地方。故本题选C。

  • 第5题:

    There is no one absolutely correct way to draw up a lesson plan and each teacher will decide what suits him or her best, but all good lesson plans give a clear picture of what the teacher intends to do in the lesson.()


    正确答案:正确

  • 第6题:

    Your company, Contoso, Ltd , has offices in North America and Europe. Contoso has an Active Directory forest that has three domains. You need to reduce the time required to authenticate users from the labs.eu. contoso.com domain when they access resources in the eng.na.contoso.com domain. What should you do()

    • A、Decrease the replication interval for all Connection objects.
    • B、Decrease the replication interval for the DEFAULTIPSITELINK site link.
    • C、Set up a one-way shortcut trust from eng.na.contoso.com to labs.eu.contoso.com.
    • D、Set up a one-way shortcut trust from labs.eu.contoso.com to eng.na.contoso.com.

    正确答案:C

  • 第7题:

    单选题
    Your company, Contoso, Ltd , has offices in North America and Europe. Contoso has an Active Directory forest that has three domains. You need to reduce the time required to authenticate users from the labs.eu. contoso.com domain when they access resources in the eng.na.contoso.com domain. What should you do()
    A

    Decrease the replication interval for all Connection objects.

    B

    Decrease the replication interval for the DEFAULTIPSITELINK site link.

    C

    Set up a one-way shortcut trust from eng.na.contoso.com to labs.eu.contoso.com.

    D

    Set up a one-way shortcut trust from labs.eu.contoso.com to eng.na.contoso.com.


    正确答案: C
    解析: 暂无解析

  • 第8题:

    单选题
    What can be the best title for the text?
    A

    Americans work more and vacation less.

    B

    Where Americans go on their summer vacations.

    C

    Different places for summer vacations.

    D

    Not all Americans take summer vacations.


    正确答案: C
    解析:
    本文讲述了虽然工作时间长,休假时间短,但在暑假,美国人会离家去旅游一两周,甚至更长时间,他们旅游的方式和地点很多,如一些人家车环游美国,一些人去历史悠久的地方,还有一些人利用假期接近大自然,由此可推断出B项“美国人夏季去哪度假”作为文章标题。

  • 第9题:

    单选题
    What is the best way to deal with sentence 10?
    A

    Leave it as it is.

    B

    Replace the word his with Reynolds.

    C

    Delete the words brought up thinking they are.

    D

    Insert the word however before the words I did.

    E

    Omit the entire sentence.


    正确答案: C
    解析:
    因为句子将两个表达意思相反的从句连接起来,因此需要使用表示转折的连词连接起来,故选D项。

  • 第10题:

    单选题
    What is the best way to reduce the amount of soot?
    A

    Installing exhaust filters on all trucks and buses.

    B

    Better managing forest fires.

    C

    Getting Americans to give up SUVs.

    D

    Melting snow and ice.


    正确答案: D
    解析:
    soot指“烟灰”。录音中提到“…reducing the amount of soot in the air by…better managing forest fires is probably easier than getting Americans to give up SUVs”,其中SUV指“多功能车”,可见减少烟灰最好的方法之一是更好地对森林火灾进行管理。
    【录音原文】
    Because soot promotes the melting of snow and ice, it may exacerbate the problem of rising seas. The good news is that reducing the amount of soot in the air by installing exhaust filters on diesel trucks and buses and better managing forest fires is probably easier than getting Americans to give up SUVs. Fires are the source of about half the world’s soot.

  • 第11题:

    单选题
    —I’ve decided to give up my job, Mum.—______.You’d better think twice.
    A

    Sounds great!

    B

    What a pity!

    C

    Guess what?

    D

    Are you serious?


    正确答案: C
    解析:
    句意:—妈妈,我决定辞掉工作。—你是认真的吗?你最好多考虑一下。A项意为“听起来不错”。B项意为“太遗憾了”。C项意为“你猜怎么着”。D项意为“你是认真的吗”。根据后半句回答可以推测,D项符合对话语境。

  • 第12题:

    单选题
    A dry-type exhaust muffler clogged with soot, will cause()
    A

    low exhaust temperature

    B

    loss of engine power

    C

    burned intake valves

    D

    engine racing


    正确答案: B
    解析: 暂无解析

  • 第13题:

    As recently as three decades ago,many Americans believed that using credit was an unwise and?dangerous way to pay for what they bought.Some even thought that owing money to a store or a?credit company was something to be ashamed of.Good citizens,they believed,always bought what?they wanted with real money and they paid the full price immediately.
    Today,however,all that has changed.Credit,as some observers have noted,has become a?way of life in the United States.More and more Americans now are depending on those small pieces?of plastic,credit cards,to pay for large purchases such as televisions,record players or furniture.Many people today would consider it unusual not to use a credit card to pay for a costly restaurant?dinner,a hotel room or an airline trip.And there are some situations in which Americans must have?credit cards.If they want the temporary use of a car,for example,they first must give the car rental?company the number of their credit card.That number is considered a guarantee that they will return?the car and pay for using it.
    Credit cards offer two major services to Americans.First of all,they are easier and safer to?carry than large amounts of money.Second,they permit people to borrow,to have the immediate?pleasure of owning something,even if they do not have enough money to pay for it at the time.With?credit cards people pay for goods or services at the end of each month instead of when they buy them.And when the time does come to pay,most credit cards offer people a choice.They can pay all of?what they owe for the month or they can just pay usually between 5 and 10 percent of what they owe.

    What is the best title for the passage?

    A.Credit—a Way of Life in America
    B.Credit Services in America
    C.Convenience of Living in America
    D.History of Credit Cards in America

    答案:A
    解析:
    【考情点拨】主旨大意题。
    【应试指导】整篇文章讲的是美国人对使用信用卡的态度和信用卡的使用对美国人生活的影响,所以“信用消费——美国的一种生活方式”最能概括全文,故选A。

  • 第14题:

    共用题干
    New research from NASA scientists suggests emissions of black soot after the way sunlight re- flects off snow.According to a computer simulation,black soot may be responsible for 25 percent of observed global warming over the past century. Soot in the higher latitudes(维度)of the Earth,where ice is more common , absorbs more of the sun's energy and warmth than an icy,white background. Dark-colored black carbon,or soot, absorbs sunlight,while lighter colored ice reflects sunlight.
    Soot in areas with snow and ice may play an important role in climate change.Also,if snow and ice covered areas begin melting,the warming effect increase,as the soot becomes more con-centrated on the snow surface.“This provides a positive feedback,as glaciers and ice sheets melt, they tend to get even dirtier.”said Dr. James Hansen,a researcher at NASA's Goddard Institute for Space Studies,New York.
    Hansen found soot's effect on snow albedo(反照率),which may be contributing to trends to-ward early springs in the Northern Hemisphere,such as thinning Arctic sea ice and melting glac-iers permafrost. Soot also is believed to play a role in changes in the atmosphere above the oceans and land.
    “Black carbon reduces the amount of energy reflected by snow back into space,thus heating the snow surface more than if there were no black carbon,”Hansen said. Soot's increased absorp-tion of solar energy is especially effective in warming the world's climate.“ This forcing is unusual-ly effective,causing twice as much global warming as a carbon-dioxide forcing of the same magni-tude.”Hansen noted.
    Hansen cautioned,although the role of soot in altering global climate is substantial,it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century .Such gases are expected to be the largest climate forcing for the rest of the century.
    The researchers found that observed warming in the Northern Hemisphere was large in the winter and spring at middle and high latitudes. These observations were coherent with the researchers' climate model situations,which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.

    “This forcing” in Paragraph 5 refers to_____.
    A: sun's heating on snow surface
    B: soot's increased absorption of solar energy
    C: carbon-dioxide's warming effect
    D: snow's increased reflection of sunlight

    答案:B
    解析:
    文章第二段最后一句“…while lighter colored ice reflects sunlight.”说浅色的冰反射太阳光,而黑色的煤烟灰并不反射。其他三项在文章一、二段都有提到,故本题选C。


    根据第五段首句“Black carbon reduces the amount of energy reflected by snow back in-to space, thus heating the snow surface more than if there were no black carbon,”可知,黑炭覆盖的地区有更强烈的加热效果。故本题选B。


    第五段中的“This forcing”指的是其前面所说的“Soot's increased absorption of solar energy”。因此本题选B。


    根据第六段“…it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century.”可知,温室气体是上世纪气候变暖的首要原因,故选C。


    由最后一段最后一句“…which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.”知,部分大规模的温室效应发生在有厚雪覆盖层和阳光强烈的地方。故本题选C。

  • 第15题:

    共用题干
    New research from NASA scientists suggests emissions of black soot after the way sunlight re- flects off snow.According to a computer simulation,black soot may be responsible for 25 percent of observed global warming over the past century. Soot in the higher latitudes(维度)of the Earth,where ice is more common , absorbs more of the sun's energy and warmth than an icy,white background. Dark-colored black carbon,or soot, absorbs sunlight,while lighter colored ice reflects sunlight.
    Soot in areas with snow and ice may play an important role in climate change.Also,if snow and ice covered areas begin melting,the warming effect increase,as the soot becomes more con-centrated on the snow surface.“This provides a positive feedback,as glaciers and ice sheets melt, they tend to get even dirtier.”said Dr. James Hansen,a researcher at NASA's Goddard Institute for Space Studies,New York.
    Hansen found soot's effect on snow albedo(反照率),which may be contributing to trends to-ward early springs in the Northern Hemisphere,such as thinning Arctic sea ice and melting glac-iers permafrost. Soot also is believed to play a role in changes in the atmosphere above the oceans and land.
    “Black carbon reduces the amount of energy reflected by snow back into space,thus heating the snow surface more than if there were no black carbon,”Hansen said. Soot's increased absorp-tion of solar energy is especially effective in warming the world's climate.“ This forcing is unusual-ly effective,causing twice as much global warming as a carbon-dioxide forcing of the same magni-tude.”Hansen noted.
    Hansen cautioned,although the role of soot in altering global climate is substantial,it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century .Such gases are expected to be the largest climate forcing for the rest of the century.
    The researchers found that observed warming in the Northern Hemisphere was large in the winter and spring at middle and high latitudes. These observations were coherent with the researchers' climate model situations,which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.

    Which of the following statements of soot is NOT true?
    A: It absorbs sun's heat.
    B: It is responsible for climate change.
    C: It reflects sunlight.
    D:.It may account for a quarter of global warming over the past century.

    答案:C
    解析:
    文章第二段最后一句“…while lighter colored ice reflects sunlight.”说浅色的冰反射太阳光,而黑色的煤烟灰并不反射。其他三项在文章一、二段都有提到,故本题选C。


    根据第五段首句“Black carbon reduces the amount of energy reflected by snow back in-to space, thus heating the snow surface more than if there were no black carbon,”可知,黑炭覆盖的地区有更强烈的加热效果。故本题选B。


    第五段中的“This forcing”指的是其前面所说的“Soot's increased absorption of solar energy”。因此本题选B。


    根据第六段“…it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century.”可知,温室气体是上世纪气候变暖的首要原因,故选C。


    由最后一段最后一句“…which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.”知,部分大规模的温室效应发生在有厚雪覆盖层和阳光强烈的地方。故本题选C。

  • 第16题:

    There is no one absolutely correct way to draw up a lesson plan and each teacher will decide what suits him or her best, but all good lesson plans give a clear picture of what the teacher intends to do in the lesson.()

    A

    B



  • 第17题:

    Which of the following is the BEST way to ensure that a server is up-to-date with all updates as soon as they are released?()

    • A、Automatic updates set to install once per week
    • B、Automatic updates set to install updates automatically
    • C、Automatic updates set to download all updates automatically
    • D、Manual updates done daily at noon

    正确答案:B

  • 第18题:

    单选题
    Fins are installed on the generating tube surfaces in waste heat boilers to ().
    A

    prevent soot fires in the exhaust system

    B

    prevent exhaust gas erosion of the tubes

    C

    increase the velocity of exhaust gas flow

    D

    increase the rate of heat transfer


    正确答案: D
    解析: 暂无解析

  • 第19题:

    单选题
    A

    European Immigrants don’t stay together in groups.

    B

    Most of the Hispanic communities speak Spanish as their first language.

    C

    American social workers feel that all Americans should speak one language.

    D

    “A melting pot” might be the better term to describe the USA.


    正确答案: B
    解析:
    [考点]细节题。录音提到“There are Hispanic communities, most of whom still speak Spanish as their first language”,故B项正确。

  • 第20题:

    单选题
    You work as the enterprise exchange administrator at TestKing.com. TestKing.com makes use of Microsoft Exchange Server messaging solution. The TestKing.com network consists of a single ActiveDirectory forest with one domain. The internal network of TestKing.com contains a perimeter network. You have received instructions fromthe CIO to install 15 Edge Transport servers on the perimeter network with the following criteria: * The Edge Transport servers should have a security policy, applied by the administrators. * The minimization of the administrative overhead towards the servers. * The minimization the attack surface of the perimeter network. What should you do?()
    A

    The best option is to set up a new Active Directory domain in the internal forest and then join all EdgeTransport servers to the new domain.

    B

    The best option is to make use of Active Directory Federation Services (AD FS).

    C

    The best option is to make use of Network Policy and Access Services (NPAS).

    D

    The best option is to set up a new Active Directory domain in the perimeter network and then join all Edge Transport Servers to the new domain.


    正确答案: B
    解析: 暂无解析

  • 第21题:

    单选题
    What could a person attending the seminar hope to learn?
    A

    How to become more productive

    B

    How to own a company

    C

    How to become a better salesperson

    D

    How to give a better effort


    正确答案: D
    解析:
    本篇文章的主题是通知“以最大的努力获取最优效果”的研讨会,提到研讨会希望所有人员参加,以自己的努力去的最优效果,因此参加这次研讨会的人是想要学习提高生产率的方法。故A项符合题意。

  • 第22题:

    单选题
    Which of the following is the BEST way to ensure that a server is up-to-date with all updates as soon as they are released?()
    A

    Automatic updates set to install once per week

    B

    Automatic updates set to install updates automatically

    C

    Automatic updates set to download all updates automatically

    D

    Manual updates done daily at noon


    正确答案: D
    解析: 暂无解析

  • 第23题:

    单选题
    Which of the following statements would Schwarz agree with?
    A

    Breastfeeding is not advisable because it is not good for a mom to keep a good shape.

    B

    Breastfeeding can greatly reduce a mother's chances of getting all kinds of serious disease.

    C

    Breastfeeding for a month is highly recommended: the longer, the better.

    D

    Breastfeeding for a month or longer makes babies smarter.


    正确答案: B
    解析:

  • 第24题:

    判断题
    There is no one absolutely correct way to draw up a lesson plan and each teacher will decide what suits him or her best, but all good lesson plans give a clear picture of what the teacher intends to do in the lesson.()
    A

    B


    正确答案:
    解析: 暂无解析