Americans eat________vegetables per person today as they did in the 1960s.

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问题 Americans eat________vegetables per person today as they did in the 1960s.

选项 A、more than twice
B、as twice many
C、twice as many
D、more than twice as many

答案C

解析 本题考查倍数表示法。表示倍数的结构通常为:倍数+as+adj.+as,故选C。句意为:现今,平均每个美国人食用的蔬菜量是他们20世纪60年代的两倍。
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