首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automob
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automob
admin
2016-04-30
59
问题
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automobile traffic. At present, we realize that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be infected by air pollution. Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels(coal and oil)is creating a "greenhouse effect"—conserving heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be in water.
Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth’s temperature—a result that would be equally disastrous. A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top fanning areas. Today we do not know for sure that either of these conditions will happen(though one recent government report drafted by experts in the field concluded that the greenhouse effect is very possible). Perhaps, if we are lucky enough, the two tendencies will offset each other and the world’s temperature will stay about the same as it is now.
This passage is primarily about( ).
选项
A、the greenhouse effect
B、the burning of fossil fuels
C、the potential effect of air pollution
D、the likelihood of a new ice age
答案
C
解析
归纳概括题。文章第一段提到地球的气温可能受到空气污染的影响,接下来谈到两种因空气污染可能造成的后果,所以应选C“空气污染可能带来的影响”。其他三个选项都只是文章主题的一个方面。
转载请注明原文地址:https://kaotiyun.com/show/DfRO777K
0
成人本科学位英语
相关试题推荐
Toooftenyoungpeoplegetthemselvesemployedquitebyaccident,notknowingwhatliesinthewayofopportunityforpromotion,
Afterabusydayofworkandplay,thebodyneedstorest.Sleepisnecessaryforgoodhealth.Duringthistime,thebodyrecover
Afterabusydayofworkandplay,thebodyneedstorest.Sleepisnecessaryforgoodhealth.Duringthistime,thebodyrecover
Tousitseemssonaturaltoputupanumbrellatokeepthewateroffwhenitrains.Butactuallytheumbrellawasnotinvented
Howmenfirstlearnedtoinventwordsisunknown;inotherwords,theoriginoflanguageisamystery.Allwereallyknowistha
IftheEuropeansthoughtadrought—alongperiodofdryweather-—wassomethingthathappenedonlyinAfrica,theyknowbetterno
Ayoungster’ssocialdevelopmenthasaprofoundeffectonhisacademicprogress.Kidswhohavetroublegettingalongwiththeir
ScientistsinIndiahaveinventedanewwaytoproduceelectricity.Theirinventiondoesnotgetitspowerfromoil,coaloroth
Sportsandgamesmakeourbodiesstrong,preventusfromgettingtoofat,andkeepushealthy.Buttherearenottheironlyuse.
随机试题
下列关于产品缺陷与产品瑕疵的表述,不正确的是()
A.激光B.阿昔洛韦C.阿奇霉素D.青霉素E.头孢三嗪尖锐湿疣首选
在直线相关分析中,r=1表示两变量间的相关关系为
反击式水轮机按转轮区内水流相对于主轴流动方向的不同可分为()。
在航空运输中,如果承运人证明受害人自己的过失是造成损失的原因或原因之一,法院可以按照其法律规定免除承运人的责任。
在签订理财规划服务合同时,理财规划师应注意的事项有()。
所谓“田盲”指的是一些青年农民对农活知识的缺乏,远离农活,碰到稍复杂的农活就一筹莫展。根据上述定义,下列选项符合上述定义的是()。
北魏首创均田制,隋至唐初一直沿用。均田制下农业生产经营的主要形式是()。
YouwillhearMarkFinch,awell-knownbusinessconsultant,speakingtoagroupofbusinesspeopleataseminar.Foreachque
Readthearticlebelowaboutthecorporatehumorbusiness.Foreachquestion31-40,writeonewordinCAPITALLETTERSonyourAn
最新回复
(
0
)