首页
登录
职称英语
There was one thought that air pollution affected only the area immediately
There was one thought that air pollution affected only the area immediately
游客
2024-01-16
50
管理
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 fanning 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. [br] This passage is primarily about______.
选项
A、the greenhouse effect
B、the burning of fossil fuels
C、the potential effect of air pollution
D、the likelihood of a new ice age
答案
C
解析
主旨题。文章第一段提到地球的气温可能受到空气污染的影响,接下来谈到两种因空气污染可能造成的后果,选项C“空气污染可能带来的影响”正确,A、B、D三项都只是文章主题的一个方面。故选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3366847.html
相关试题推荐
LincolnthoughtitwaswrongtokeepNegroes______slaves.A、inB、asC、forD、atD本
Youwillbelate______youleaveimmediately.A、unlessB、untilC、ifD、orA本题考查连词辨析
Manyplayerswhohadbeenhighlythoughtofhave_____fromthetennisscene.A、dis
Inasecondhandbookshop,Billycameacrossabookwhichhethoughtwascertain
Hethoughtthiswasthefirstpairofshoesthathadfittedhim______.A、perfectl
IftheEuropeansthoughtadrought—alongperiodofdryweather—wassomething
IftheEuropeansthoughtadrought—alongperiodofdryweather—wassomething
IftheEuropeansthoughtadrought—alongperiodofdryweather—wassomething
Notlongago,Ihadmyfirston-linechat.Ithoughtitwouldbe【C1】______bec
Notlongago,Ihadmyfirston-linechat.Ithoughtitwouldbe【C1】______bec
随机试题
面向服务系统构建过程中,()用于实现Web服务的远程调用,(请作答此空)用来将
患者,男性,45岁。阵发性全腹疼痛3天,加剧1天。呕吐数次,未排便排气。2年前曾
百合除能够治疗肺热咳嗽、劳嗽咳血外,还可治疗的病证是()A.肝肾阴虚,头晕
()是指公司财务结构不合理、融资不当使公司可能丧失偿债能力而导致投资者预期收益
下列各项,不属于小儿水肿水毒内闭证的主要症状的是()A.尿少尿闭 B.恶
A.树脂道B.油管C.油室D.油细胞E.乳管防风横切面可见
潘某与刘某相约出游,潘某在长江边拾得一块奇石,爱不释手,拟带回家。刘某说,《民法
甲和乙之间签订了一份原料采购合同,约定甲2017年1月1日交货,乙于同年2月1日
下列属于相克关系传变的是A.五行相乘 B.五行相侮 C.母病及子 D.子病
洋地黄中毒时的信号为A.眩晕 B.定向力丧失 C.胃肠道症状 D.色觉障碍
最新回复
(
0
)