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
2014-03-13
34
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. (76) 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.
(77) 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 exports 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/5iDO777K
0
成人本科学位英语
相关试题推荐
Onleavingschoolhebecameanoffice-boyandhavingno______torisehigher,heonlywastedhistime.
Oneofthegreatadvancesinmoderntechnologyhasbeentheinventionofcomputers.Theyarealreadywidelyusedinindustryand
AtrialhasincreasedAmericans’interestintheproblemofviolenceagainstwomen.O.J.Simpsonhasbeenaccusedofkillinghi
IntheUnitedStates,thefirstdaynurserywasopenedin1854.Nurserieswereestablishedinvariousareasduringthe【C1】______
SpeakerA:Theexperimenthasbeencompleted,hasn’tit?SpeakerB:______
Hethoughtthepaintingwasoflittle______,soheletmehaveitforonlytendollars.
Hetalkedasifhe______alltheworkhimself,butinfactTomandIdidmostofit.
然而,在那个国家还有成千上万的年轻人却很难找到工作。
对我来说,越找越好。
人的学习能力似乎是无限的。
随机试题
企业重整
A.CLLB.CMLC.ALLD.AMLE.淋巴瘤
下列检查最有可能出现异常的是治疗效果不显著时,可以加用下列哪种治疗
A.缺血性肌挛缩B.压疮C.膀胱尿道损伤D.周围神经损伤E.缺血性骨坏死股骨颈骨折常并发
足(趾、踪、跗)骨检查常规摄影体位是
32岁男性患者,因发热、腰痛5天,无尿2天以“流行性出血热”入院。入院后经利尿、纠酸等治疗未见好转。目前烦躁不安,眼睑浮肿,脸潮红,体表静脉充盈,血压23/12kPa,心率120次/分,律齐,应考虑是
建议书征求文件应包括()。
关于信号与信息,如下几种说法中正确的是()。[2013年真题]
在外汇市场上,汇率是经常变动的。下列哪个因素不能影响汇率变动?()
Ayoungmanwhoheardhecouldhavetheamountoflandhewalkedinadaystartedontheroadassoonasthesunrose.Afterwal
最新回复
(
0
)