. Clean water is necessary than fresh air to the people living in big cities.A. no moreB.

问题补充：

. Clean water is necessary than fresh air to the people living in big cities.

A. no more

B. no less

C. much as

D. not any more

答案：

A. no more

(答案→)B. no less

C. much as

D. not any more

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