语篇解读:本文为一篇说明文。文章讲述了空气污染可能会给人类造成的影响。人类社会的进步不应该以牺牲环境作为代价。
1.People used to think that air pollution ________.
A.caused widespread damage in the countryside
B.affected the entire eastern half of the United States
C.had a very bad effect on health
D.existed merely in urban and industrial areas
答案:D 细节理解题。根据文章第一段第一句“There was one thought that air pollution affected only the area immediately around large cities with factories and heavy traffic.”可知,人们过去认为空气污染只存在于工厂林立的工业区和交通拥挤的大城市当中。故答案选D。
2.As to the greenhouse effect, the author ________.
A.shares the same view with the scientists
B.is uncertain of its occurrence
C.rejects it as being ungrounded
D.thinks that it will destroy the world soon
答案:B 推理判断题。根据第一段最后一句中的“If this view is correct and...”可知,作者并不确定这种观点(来自化石燃料燃烧的二氧化碳会导致温室效应,使全球变暖)是否正确。故答案选B。
3.The underlined word “offset” in the second paragraph could be replaced by ________.
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