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Many Americans eat ________ as they actually need every day.

A. twice as much protein (蛋白质) B. twice protein as much

C. protein as much twice D. protein as twice much

 

A

【解析】

试题分析: 考查倍数的用法。句意:许多所摄入的蛋白质是他们所需要的二倍。倍数词+as…as意为“是……多少倍”,故选A项。

考点 : 考查倍数的用法

 

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