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  3. According to World Health Organization, how many people are killed by outdoor air pollution? It found that increases in air pol

According to World Health Organization, how many people are killed by outdoor air pollution? It found that increases in air pol

admin2009-08-19  65
问题 According to World Health Organization, how many people are killed by outdoor air pollution?
It found that increases in air pollution tended to ______.
选项
答案aggravate asthma symptoms in children
解析 细节题。根据题干定位到第四个小标题首段末句It found that increases in air pollution tended to aggravate asthma symptoms in children，即：空气污染的增加恶化孩子的哮喘症状，故得答案。
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