2. 外语
  3. ______hot weather may cause serious health problems associated with air pollution? ______there were controversies on the issue

______hot weather may cause serious health problems associated with air pollution? ______there were controversies on the issue

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问题 ______hot weather may cause serious health problems associated with air pollution?
______there were controversies on the issue of global warming?
选项 A、 
B、 
C、 
D、 
答案A
解析 controversies(争议)一词出现在Report 1(A部分)的第一句话中：...clear up some of the controversies regarding global warming。既然说美国国会的一项调查有助于澄清一些关于全球变暖的争议，那么由逻辑可知肯定是存在这些争议的，因此本题答案就是A。
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