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
2016-11-29
54
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. 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.
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 farming 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.
Driven by economic profit, people neglect the damage on our environment caused by the "advanced civilization". Maybe the air pollution is the price the human beings have to pay for their development. But is it really worthwhile?
As pointed out at the beginning of the passage, people used to think that air pollution
选项
A、caused widespread damage in the countryside
B、affected the entire eastern half of the United States
C、had damaged effect on health
D、existed merely in urban and industries areas
答案
D
解析
由第一段第一句话可推知。
转载请注明原文地址:https://kaotiyun.com/show/4PVd777K
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
Readthefollowingarticlesinwhichfivepeopletalkedabouthowtobeagoodleader.Forquestions61to65,matchnameofeac
Readthefollowingarticlesinwhichfivepeopletalkedabouthowtobeagoodleader.Forquestions61to65,matchnameofeac
Ascientistwhodoesresearchineconomicpsychologyandwhowantstopredictwayinwhichconsumerswillspendtheirmoneymust
Therocketengine,withitssteadyroarlikethatofawaterfallorathunderstorm,isanimpressivesymbolofthenewspaceage
It’snosecretthatmanychildrenwouldbehealthierandhappierwithadoptiveparentsthanwiththeparentsthatnaturedealtt
Wheredoestheconversationmostprobablytakeplace?
Although"liedetectors"arewidelyusedbygovernments,policedepartmentsandbusinesses,theresultsarenotalwaysaccurate.
Howmanycoursesdidthewomantakelastsemester?
Nearlyall"speedreading"courseshavea"pacing"element—sometimingdevicewhichletsthestudentsknowhowmanywordsaminuteh
Howmanycoursesdidthewomantakelastsemester?
随机试题
肺肾阴虚型经行吐衄的治法是()
()行为犯了贷款诈骗罪。
下列属于导出单位的的是____________。
在计划审计工作时,注册会计师应当评价下列事项对财务报告内部控制的影响。以下事项中,不需要注册会计师评价的是()。
按照《护照法》,我国公民护照有效期以()周岁为界。
无过错责任原则,是指不问行为人主观上是否有过错,只要其行为与损害后果存在因果关系,就应承担民事责任的归责原则。 根据以上定义,以下属于无过错责任原则的是:
简述占有的效力。
若变量a未事先定义而直接使用(例如:a=0),则变量a的类型是
姚老师正在将一篇来自互联网的以.html格式保存的文档内容插入到Word中,最优的操作方法是()
(1)Criminologyhastreatedwomen’sroleincrimewithalargemeasureofindifference.Theintellectualtraditionfromwhichcri
最新回复
(
0
)