---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
网友回答
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。