【題目】There are several reasons _____ the smog days in many parts of China.

A. account forB. accounted for

C. accounting forD. to be accounted for

【答案】C

【解析】

試題分析：考查動(dòng)詞時(shí)態(tài)語(yǔ)態(tài)。句意：中國(guó)多地的霧霾天氣由很多原因?qū)е�。非謂語(yǔ)動(dòng)詞，動(dòng)詞與主語(yǔ)之間是主動(dòng)語(yǔ)態(tài)，故選C項(xiàng)。

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