Americans eat___________(两倍的)protein as they actually need every day.

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问题 Americans eat___________(两倍的)protein as they actually need every day.

选项

答案twice as much

解析本题考查表示倍数的比较级的用法，正确形式为：倍数 + as much + 名词 + as。

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大学英语四级

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