2017年外研版必修三Module3 Period 3课后阅读训练含解析
1. As pointed out at the beginning of the passage, 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 damaging effects on health
D. existed merely in urban and industrial areas
2. As far as the greenhouse effect is concerned, 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
【解析】选B。推理判断题。文章第一段论述了温室效应可能会使全球气温上升, 第二段又谈到污染也可能会使大气温度下, 根“At present we do not know for sure that either of these conditions will happen. . . ”可知B项正确。