The bookstore has sold children’s books as they did last year.A. twice as muchB. twice as

问题补充：

The bookstore has sold children’s books as they did last year.

A. twice as much

B. twice as many

C. as twice many

D. as twice much

答案：

A. twice as much

(答案→)B. twice as many

C. as twice many

D. as twice much

解析：考查倍数问题。本题倍数结构为：倍数 + as + adj + as，book为可数名词，故用many修饰，根据句意选择B。