Americans eat______as they actually need everyday.

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问题 Americans eat______as they actually need everyday.

选项 A、twice as much protein
B、twice protein as much twice
C、twice protein as much
D、protein as twice much

答案A

解析考查倍数表达法。句意为“美国人每天所摄人的蛋白质是他们实际需要的两倍”。倍数+as…as意为“是……多少倍”，故选A。

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