2. 专升本
  3. As pointed out at the beginning of the passage, people used to think that air pollution ______. As to the greenhouse effect, th

As pointed out at the beginning of the passage, people used to think that air pollution ______. As to the greenhouse effect, th

admin2009-08-21  80
问题 As pointed out at the beginning of the passage, people used to think that air pollution ______.
As to the greenhouse effect, the author ______.
选项 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
解析 本题为细节判断题。文中作者列举了两种不同的观点，即一种认为燃烧石油和煤将导致空气中二氧化碳增加，因而产生温室效应；另一种观点认为空气中的粉尘将挡住太阳光辐射，从而使得地球气温降低。但最后作者指出“Today we do not know for sure that either of these conditions will happen"。由此，我们可以推断在作者看来这两种看法都不一定正确，因此无法断定谁是谁非。
转载请注明原文地址:https://kaotiyun.com/show/JnvC777K
本试题收录于： 英语题库成考专升本分类
0

英语

成考专升本

相关试题推荐
随机试题
最新回复(0)