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 请选择答案回复(如A)

Question

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
请选择答案回复(如A)

Answer 1

A.refers to 有“提及”的含义,可以提及人也可以是物.如He never referred to his sisters in his letters.他在信里从未提到过他的姊妹； comes to 有苏醒 和 总计的意思；happens to 发生；speaks to 后接 sb.,和.说话