---Now I can’t find book about animals.-Is it old picture book on the desk?A. the; aB.

问题补充：

---Now I can’t find book about animals.

---Is it old picture book on the desk?

A. the; a

B. a; the

C. the; the

D. the; an

答案：

A. the; a

B. a; the

C. the; the

(答案→)D. the; an

解析：考查情景交际和冠词。句意“我找不到那本关于动物的书了。”“它是一本旧的图画书，（原先）放在课桌上吗？”特指用the，泛指用a/ an。Old首字母发音是元音，故用an。故选D。