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】

試題分析：考查倍數(shù)和比較等級(jí)。倍數(shù)必須放在比較等級(jí)的前面，常見的結(jié)構(gòu)有：倍數(shù)+比較級(jí)+than；倍數(shù)+as...as；倍數(shù)+the weight/size/length of...等。A項(xiàng)的倍數(shù)放在了as...as中間，排除A；D項(xiàng)中的as...as中間應(yīng)該用原級(jí)，排除D；B項(xiàng)結(jié)構(gòu)不正確，故選C。

考點(diǎn)：考查倍數(shù)和比較等級(jí)

 

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