______hot weather may cause serious health problems associated with air pollution? ______wildfires increased in North America a

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问题 ______hot weather may cause serious health problems associated with air pollution?
______wildfires increased in North America and other parts of the world recently?

选项 A、 
B、 
C、 
D、 

答案A

解析 在Report 1(A部分)的倒数第三句中指出:Recent data compiled on wildfires...around the world,即近来积累的数据表明北美和世界其他地方的山火发生频率都增加了,这与题句的意思是一致的。
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