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 or heavy automobi
It was once thought that air pollution ’affected only the area immediately around large cities with factories or heavy automobi
admin
2011-03-01
86
问题
It was once thought that air pollution ’affected only the area immediately around large cities with factories or heavy automobile traffic. Today, we know 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 entire eastern halt’ of the United States and led to health warning 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 in the air resulting from the burning of coal 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 ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be under water.
Another view, less widely held, is that increasing particulate 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 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.
According to the text the word" offset" in ( Line 6, Para. 2 ) means______.
选项
A、pat up
B、set up
C、make up for
D、catch up with
答案
C
解析
由题干offset定位到第二段最后一句,该句意为如果幸运的话,气温升高与降低两种趋势将互相“弥补”,世界温度也就不会变化。offset本意为“抵消”,这里引申为“弥补,互补”。
转载请注明原文地址:https://kaotiyun.com/show/Mykd777K
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
Theautomobilehasmanyadvantages.Aboveall,itofferspeoplefreedomtogowhereverandwhenevertheywanttogo.Thebasicp
Theautomobilehasmanyadvantages.Aboveall,itofferspeoplefreedomtogowhereverandwhenevertheywanttogo.Thebasicp
WhatdoestheInternationalCentersendouttostudents?
WhatdoestheInternationalCentersendouttostudents?
Whena13-year-oldVirginiagirlstartedsneezing,herparentsthoughtitwasmerelyacold.Butwhenthesneezescontinuedfor
ForanincreasingnumberofstudentsatAmericanuniversities,Oldissuddenlyin.Thereasonisobvious:thegrayingofAmerica
ForanincreasingnumberofstudentsatAmericanuniversities,Oldissuddenlyin.Thereasonisobvious:thegrayingofAmerica
Whydidthestudentscleanthecars?
随机试题
下面关于Access表的叙述中,正确的是()。
计算机网络的资源分为硬件资源、软件资源和________资源。
无内胎充气轮胎的特点是钉子刺破轮胎后,内部空气不会立即泄掉,安全性好。()
异位妊娠破裂或流产,最主要的临床表现是
某企业同一排污口排放两种工业污水,每种工业污水中同一污染物的排放标准限值不同,依据《污水综合排放标准》,该排放口污染物最高允许排放浓度应为()。
高分子材料包括()。
下列哪种方法无法避免地板效应?()
在不大于20的正整数中,既是奇数又是合数的数的算术平均值为()。
某数据库中有关系Student(Sno,Sname,Seex,Sage,Sdept),各属性分别表示学号,姓名,性别,年龄以及所在的系;Course(Cno,Cname,Ccredit)属性分别表示课程号,课程名,学分;SC(Sno,Cno,Grade)为
结构化程序所要求的基本结构不包括()。
最新回复
(
0
)