问题描述：
一道语法选择题（2001）
45.Americans eat ______ as they actually need every day.
A.twice as much protein
B.twice protein as much twice
C.twice protein as much
D.protein as twice much
--我选了A,
45.Americans eat ______ as they actually need every day.
A.twice as much protein
B.twice protein as much twice
C.twice protein as much
D.protein as twice much
--我选了A,
问题解答：
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