The air in mountain areas isthat in big cities. [ ]A. as fresh as B. fresher than C. as dirty as D.

题目简介

The air in mountain areas isthat in big cities. [ ]A. as fresh as B. fresher than C. as dirty as D.

题目详情

The air in mountain areas is              that in big cities.
[     ]
A. as fresh as
B. fresher than
C. as dirty as
D. dirtier than
题型:单选题难度:中档来源:0101 模拟题

答案

B

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