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  3. They have produced （ ）they did last year.A. twice as much grain as B. twice mo

They have produced （ ）they did last year.A. twice as much grain as B. twice mo

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问题 They have produced （  ）they did last year.
选项 A. twice as much grain as
B. twice more grain as
C. twice as many grain as  
D. as twice many grain as
答案A
解析句意: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...times as +原级+ as 。又因为 grain 为不可数名词，故用much 修饰。
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