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
99
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
Likemanyofmygeneration,Ihaveaweaknessforheroworship.Atsomepoint,however,weallbegintoquestionourheroesand
ManyAmericansharbouragrosslydistortedandexaggeratedviewofmostoftheriskssurroundingfood.FergusClydesdale,heado
【B1】______youngpeopletodayfinditdifficulttogetajob,【B2】______inthefirstfewmonthsafterthey【B3】______school.Thisi
【B1】______youngpeopletodayfinditdifficulttogetajob,【B2】______inthefirstfewmonthsafterthey【B3】______school.Thisi
A、Peopleconsideredthemessential.B、TheywerecommonintheUnitedStates,butnotinEurope.C、Onlyafewpeoplehadthem.D、
Changesinthewaypeoplelivebringaboutchangesinthejobsthattheydo.Moreandmorepeopleliveintownsandcitiesinste
AnewWorldBankstudysaysinternationalmigrationhelpsreducepovertyindevelopingnations.Atthesametime,however,many
AnewWorldBankstudysaysinternationalmigrationhelpsreducepovertyindevelopingnations.Atthesametime,however,many
AnewWorldBankstudysaysinternationalmigrationhelpsreducepovertyindevelopingnations.Atthesametime,however,many
随机试题
女性,58岁,独居,生有煤炉。邻居发现其神志不清,面色潮红,口唇呈樱桃红色,大汗,对诊断有价值的检查是()
下列各项中,不属于小儿病理特点的是
在我国急性胰腺炎最常见的病因是()。
房屋权属登记信息是指房屋权属登记机关在登记过程形成与房屋权利直接相关的信息,包括原始登记凭证以及对房屋权利的记载信息。
下列项目中,在资产负债部分反映的有()。
容积率的计算公式为()
关于因果图的绘制,下列说法不正确的是()。
面向对象的程序设计语言是一种()。
PepysandhiswifeJanehadaskedsomefriendstodinneronSunday,September2nd,1666.TheywereupverylateontheSaturday
Thegrowthofpopulationduringthepastfewcenturiesisnoproofthatpopulationwillcontinuetogrowstraightupwardtoward
最新回复
(
0
)