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Paper bags produced every year are ______ the world’s production of vehicles.

A. as three times heavy as B. three times weight of

C. three times the weight of D. three times as heavier as

 

C

【解析】

试题分析:考查倍数和比较等级。倍数必须放在比较等级的前面,常见的结构有:倍数+比较级+than;倍数+as...as;倍数+the weight/size/length of...等。A项的倍数放在了as...as中间,排除A;D项中的as...as中间应该用原级,排除D;B项结构不正确,故选C。

考点:考查倍数和比较等级

 

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