2. 外语
  3. ______hot weather may cause serious health problems associated with air pollution? ______human activities contribute to global

______hot weather may cause serious health problems associated with air pollution? ______human activities contribute to global

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问题 ______hot weather may cause serious health problems associated with air pollution?
______human activities contribute to global warming?
选项 A、 
B、 
C、 
D、 
答案A
解析 本题题句信息对应于Report 1(A部分)的第四句：Authors believe human activities are at least partly responsible for recent warming(调查者们认为人类活动至少应对最近的变暖负部分责任)，也就是说他们认为人类活动部分导致了全球变暖。
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