摘要：When it air pollution, Beijing faces the three “C s-----cars.coal and construction.which lead to Beijing's thick air pollution. A. refers to B. comes to C. happens to D. speaks to
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When it______ air pollution, Beijing faces the three “C” s-----cars，coal and construction，which lead to Beijing's thick air pollution.
A. refers to B. comes to C. happens to D. speaks to
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When it______ air pollution, Beijing faces the three “C” s-----cars，coal and construction，which lead to Beijing's thick air pollution.
A. refers to B. comes to C. happens to D. speaks to
查看习题详情和答案>>When it______ air pollution, Beijing faces the three “C” s-----cars，coal and construction，which lead to Beijing's thick air pollution.
A. refers to B. comes to C. happens to D. speaks to
查看习题详情和答案>>