They have produced __________they did last year
单项选择题 They have produced __________they did last year.
A.twice as much grain as
B.twice more grain as
C.twice as many grain as
D.as twice many grain as
正确答案：A
答案解析:本题考查倍数的表示法。 句意：他们已经生产了是去年两倍的粮食。本题倍数表示法的常用结构为：A is…limes as+原级+as B。又因为grain为不可数名词，故用much修饰。
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