—What about book?　　　—It’s too difficult book for beginners.　A. the; the 　　　　B. a; a C. a

问题补充：

—What about book?

—It’s too difficult book for beginners.

A. the; the

B. a; a

C. a; the

D. the; a

答案：

A. the; the

B. a; a

C. a; the

(答案→)D. the; a

解析：第一空为特指，第二空为泛指。