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
78
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?
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
根据第二段第二句话“A drop of just a few degrees…”可推知。
转载请注明原文地址:https://kaotiyun.com/show/YPVd777K
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
Doctorsandpsychologistsaretalkingalotaboutstressnowadays.Wekeephearingabouthowharmfulstressis--howit【C1】_____
Forsometimepastithasbeenwidelyacceptedthatbabiesandothercreatureslearntodothingsbecausecertainactsleadto"
Readthetextsfromanarticleinwhichfivepeopletalkedaboutsuccess.Forquestions61to65,matchthenameofeachperson
It’snosecretthatmanychildrenwouldbehealthierandhappierwithadoptiveparentsthanwiththeparentsthatnaturedealtt
Abouttenmenineveryhundredsufferfromcolourblindnessinsomeway;womenareluckieronlyaboutoneintwohundredisaffe
Whatdoesthespeakerthinkofthecausesofautomobileaccidents?
Whatdoesthespeakerthinkofthecausesofautomobileaccidents?
Theconceptionofpovertyandwhatto【C1】______aboutithavechangedoverthedecades.UnderSocialDarwinismthelazyandthe【C
Whichfacilityisnotavailableintheapartmentbuilding?
Howmanycoursesdidthewomantakelastsemester?
随机试题
中空玻璃有良好的节能效果,一般均采用双道密封。其第一道密封应采用()。
(2014年4月第22题)下列适用于探测性调查的情况有()
从政府对房地产价格的管制或干预程度来划分,可将房地产价格分为()。
在被审计单位存在的高估本期销售收入的下列各种错报中,性质最严重的是()。
要插入页眉和页脚,首先要切换到()视图方式下。
“拔苗助长”违背了人的身心发展的()。
人类千万年的历史中,最_________的不是令人目眩的科技,不是大师们浩瀚的经典,而是实现了对权力的_________,实现了把权力关进笼子的梦想。依次填入画横线部分最恰当的一项是()。
伟大斗争、伟大工程、伟大事业、伟大梦想是一个紧密联系、相互贯通、相互作用、有机统一的整体,统一于新时代坚持和发展中国特色社会主义伟大实践。其中,起决定性作用的是
--Itookapictureofyoujustnow.--Really?Whatapity!I______.
It’stime______(采取措施)aboutthetrafficproblemdowntown.
最新回复
(
0
)