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
It was once thought that air pollution affected only the area immediately around large cities with factories and/or heavy autom
It was once thought that air pollution affected only the area immediately around large cities with factories and/or heavy autom
admin
2010-05-26
48
问题
It was once thought that air pollution affected only the area immediately around large cities with factories and/or heavy automobiles(汽车)traffic. Today, we know that although these are the areas with the worst air pollution, the problem is literally(简直地 )worldwide. On several occasions over file past decade, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be affected by air pollution. Some scientists feel that the increasing concentration of carbon dioxide(二氧化碳)in the air resulting from the burning of fossil(化石)fuels (com and oil) is creating a "greenhouse effect"—holding in 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(极地的) ice cap will much and cities such as New York, Boston, Miami, and New Orleans will be under 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. At present we do not know for sure that either of these conditions will happen (though one recent government report prepared by experts in the field concluded that the greenhouse effect is very likely). Perhaps, if we are very lucky, the two tendencies will offset each other and the world’s temperature will stay about the same as it is now.
The word "offset" in the second paragraph could best be replaced by______.
选项
A、slip into
B、make up for
C、set up
D、catch up with
答案
B
解析
词汇题。本题问的是:第二段中的“offset’’可由——来代替。文章第1段是关于温室效应带来的地球温度升高,第2段是关于新冰河时代带来的地球温度降低。由文章最后一句“If we are very lucky,the two tendencies will offset each other and the world’s temperature will stay about the same as it is now”可知地球温度能够保持不变的前提是这一升一降的趋势互相抵消,make up for有补偿、弥补的意思,故选B。
转载请注明原文地址:https://kaotiyun.com/show/UHV7777K
0
大学英语四级
相关试题推荐
A、Theythoughtitquiteacceptable.B、Theybelievedittobealuxury.C、Theytookittobeatrend.D、Theyconsidereditavoida
Likemanyofmygeneration,Ihaveaweaknessforheroworship.Atsomepoint,however,weallbegintoquestionourheroesand
Likemanyofmygeneration,Ihaveaweaknessforheroworship.Atsomepoint,however,weallbegintoquestionourheroesand
ManyAmericansharbouragrosslydistortedandexaggeratedviewofmostoftheriskssurroundingfood.FergusClydesdale,heado
Themodernageisanageofelectricity.Peoplearesousedtoelectriclights,radios,televisions,andtelephonesthatitish
Themodernageisanageofelectricity.Peoplearesousedtoelectriclights,radios,televisions,andtelephonesthatitish
Themodernageisanageofelectricity.Peoplearesousedtoelectriclights,radios,televisions,andtelephonesthatitish
【B1】______youngpeopletodayfinditdifficulttogetajob,【B2】______inthefirstfewmonthsafterthey【B3】______school.Thisi
AnewWorldBankstudysaysinternationalmigrationhelpsreducepovertyindevelopingnations.Atthesametime,however,many
ASenseofCrisisAroundtheworld,governmentsseeviolenceinschoolsasagrowingproblem.Thesubjectisontheagen
随机试题
A.酸中毒时酸性尿B.反常性碱性尿C.碱中毒时碱性尿D.反常性酸性尿E.酸碱平衡时酸性尿失血性休克时出现
设其中Dt,是由x=t,y=t以及坐标轴围成的正方形区域,函数f(x)连续.求a的值使得g(t)连续;
二陈汤的功效是
下列不属于机构投资者的是()。
经营者违反《反垄断法》规定,达成并实施垄断协议的,可以采取的处罚有()。
审计人员为了证实投资的存在性与所有权,应实施的审计程序是()。
公务员执行公务时,认为上级的决定或命令有错误,应当()。
请用不超过200字的篇幅,概括出给定资料的主要内容。要求:有条理、有层次。就给定资料反映的主要问题,用1500字左右的篇幅,请以“发展我市海水淡化技术及其产业的举措和建议”为题写一篇文章。要求:中心明确,内容充实,论述深刻,有说服力。
法之所以具有预测作用,是因为法具有()。
1956年社会主义改造基本完成。随着中国建立了社会主义基本政治制度,社会主义基本经济制度也建立起来。中国社会主义基本制度的建立,标志着()。[考研政治2020年研]
最新回复
(
0
)