二、单项填空（共15小题；每小题1分，满分15分）
请认真阅读下面各题，从题中所给的A、B、C、D四个选项中，选出最佳选项，并将该选项填写在答题卷相应的方框内。
21. － Look! What's that in _______ cartoon film?
－ Oh, it's ______ UFO from space.
A. the; a B. the; an C. a; the D. a; a
22. － Are you reading a letter?
－ Yes. I _______ my uncle in America this morning.
A. heard of B. heard from C. heard it from D. got from
