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
专升本
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
2011-05-26
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. (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 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
推理判断题。文章第二段第二句提到降温几度就能导致农业生产困难甚至无法生产,这对农业来说无疑是巨大的灾难,所以B正确;根据第一段,温室效应可能导致南极的冰雪融化,将纽约等城市淹没,所以A(全球变暖不会给地球生活带来危害)是不正确的;根据常识,近几十年气温在逐渐升高,所以C也不对;作者在文中提到空气污染严重影响全球气温的变化,所以只要污染存在,气温就不可能恒定不变,D说得太绝对了。
转载请注明原文地址:https://kaotiyun.com/show/j7qC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
WhydidStanleyWilliamswriteanti-gangbooks?WhatdoesWilliamsreallywanttotellyoungpeople?
Personalqualitiesarepersonal______ofanindividual.Forexample,______isaqualityemployerswouldlikeinagoodworker
Somepeoplearguethatthepressureoninternationalsportsmenandsportswomenkillstheessenceofsport--thepursuitofperson
Wind,waveandtidesallsufferfromthefactthattheyarevariablesourcesofpoweroutput.Forexample,therewillbetimesw
Iinsistthatadoctor______immediately.
Thelittleboy______atthetoysinthewindowhopinghismotherwouldgetoneforhim.
Thelunchwasexcellent,(尤其是第一道菜).
NosoonerhadheenteredHarvard______hissisterenteredYale.
Mr.Leonard,theprincipaloftheBedfordAcademyHighSchoolinBedford-Stuyvesant,Brooklyn,isamanofmanysolutions,many
随机试题
沉默的谈判对手的心理特征是()
尿崩症侏儒症
男,25岁。发热伴皮肤出血点2周,查体:双下肢皮肤可见出血点,胸骨下段压痛(+),肝肋下3cm,脾肋下1.5cm。血液检查:Hb105g/L,WBC2.0×109/L,分类可见幼稚细胞,PLT35×109/L。最可能的诊断是()
A、溶菌酶含片B、西地碘含片C、硝酸银溶液D、氯己定含漱剂E、地塞米松粘贴片能够卤化细菌的体蛋白,杀菌力强的是()。
当机械波在媒质中传播,一媒质质元的最大形变量发生在()。
我国车辆购置税的适用区域在“中华人民共和国境内”,这里的“中华人民共和国境内”是指()。
下列不属于经济周期中复苏和繁荣阶段可能出现的一般特征的是()。
下列关于房地产权属登记的概念,说法不正确的是()。
在Word中,如果要在“插入”和“改写”状态之间切换,可以按()键。
Becausestereotypesarestandardizedand______ideasofgroups,basedonsomeprejudices,theyarenotderived______objectivefac
最新回复
(
0
)