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
2011-01-21
16
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.
It can be concluded that ______.
选项
A、raising the world’s temperature only a few degrees would not do much harm to life on earth
B、lowering the world’s temperature merely a few degrees would lead many major farming areas to disaster
C、almost no temperature variations have occurred over the past decade
D、the world’s temperature will remain constant in the years to come
答案
B
解析
由第二段第二句话“A drop of just a few degrees. . . ”可知答案。
转载请注明原文地址:https://kaotiyun.com/show/yx3d777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Thequestionofwhetherwarisinevitableisone,whichhasconcernedmanyoftheworld’sgreatwriters.Beforeconsideringthis
Whatarethetwospeakerstalkingabout?
Accordingtothespeaker,whatshouldthelistenersdoassoonaspossible?
Whatistheconversationmainlyabout?
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
Nowadays,airtravelisvery【C1】______WearenotsurprisedwhenwewatchonTVthatapoliticianhastalkedwithFrenchPresiden
Placingahumanbeingbehindthewheelofanautomobileoftenhasthesamecurioseffectascuttingcertainfibresinthebrain.
TheInternetandmobilephoneshavetransformedourconnectionstopeoplearoundtheworld.Thistechnologyhasalso,however,l
traditionalSundayroast
随机试题
乳腺癌临床可表现为
(2005年第92题)女性40岁,有胆囊结石病史。2小时前,无诱因突发上腹剧痛,向腰背部放散。伴恶心,呕吐。查体:体温37.5℃,巩膜无黄染,上腹部压痛,反跳痛,以中腹偏左为重。血淀粉酶1024U/dL。尿胆红素(++)。B超示:胆囊3cm×7c
下列哪些人属于公务员?()
城镇污水处理厂活性污泥处理系统是()。
《中华人民共和国环境影响评价法》中所说的公众参与提意见的对象是()。
乙污水处理厂是由甲环保工程有限公司(以下简称甲公司)投资实施的“BOT”项目。于2008年开始建设,2010年底完工,2011年1月开始通水运行。该厂总规模为月处理污水120万吨。该厂建设总投资3600万元,包括:43.28亩土地,5.4公里截污管网和污水
“姑娘追”是()的一项马上体育、娱乐活动,也是青年男女表白爱情的一种别致方式。
下列说法中正确的是()。
IamacommercialfishermaninAlaska.Itwasaneye-openertoseethedestructionandwasteintheworld’sfisheries.TheAlask
Tolive,learn,andworksuccessfullyinanincreasing【M1】______complexandinformation-richsociety,studentsmustbeable
最新回复
(
0
)