Fighting an artificial greenhouse effect seems to be the greatest of environmental challenges, _____

题目简介

Fighting an artificial greenhouse effect seems to be the greatest of environmental challenges, _____

题目详情

Fighting an artificial greenhouse effect seems to be the greatest of environmental challenges, ________?
A.isn't itB.does it
C.doesn't itD.is it
题型:单选题难度:中档来源:不详

答案

C
C 考察反义疑问句。当反义疑问句的陈述部分是肯定形式的时候,疑问部分使用否定形式,排除BD,根据陈述部分的seems可知doesn’t it符合题意。故C正确。

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