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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.
参考答案
参考解析
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.
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.
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.” 相关考题
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What is the implication of the words on the bus wall?A. All small acts will add up to kindness.B. It's a small act to help a person in need.C. Everyone can play his own part to make things better.D. You should be kind to your neighbors and they will treat you the same way.
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A、pickB、equipmentC、drugD、director
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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．
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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．
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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
考题
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.
考题
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 surfaceB: soot's increased absorption of solar energyC: carbon-dioxide's warming effectD: snow's increased reflection of sunlight
考题
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 sunlightB: light、 snow cover and sufficient sunlightC: heavy snow cover and sufficient sunlightD:.thick sea ice and sufficient sunlight
考题
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.
考题
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.
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考题
单选题Fins are installed on the generating tube surfaces in waste heat boilers to （）.A
prevent soot fires in the exhaust systemB
prevent exhaust gas erosion of the tubesC
increase the velocity of exhaust gas flowD
increase the rate of heat transfer
考题
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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.
考题
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.
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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.
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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
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考题
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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.
考题
单选题What could a person attending the seminar hope to learn?A
How to become more productiveB
How to own a companyC
How to become a better salespersonD
How to give a better effort
考题
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.
考题
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 weekB
Automatic updates set to install updates automaticallyC
Automatic updates set to download all updates automaticallyD
Manual updates done daily at noon
考题
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?
考题
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.
考题
单选题A dry-type exhaust muffler clogged with soot, will cause（）A
low exhaust temperatureB
loss of engine powerC
burned intake valvesD
engine racing
考题
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
对B
错
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