第一节 单项选择(共15小题: 每小题1分, 共15分)

从每题所给的ABCD四个选项中, 选出可以填入空白处的最佳选项, 并在答题卡上将该项涂黑。

例: It is so nice to hear from her again. _____, we last met more than thirty years ago.

A. What’s more　 B. That’s to say　 C. In other words　 D. Believe it or not

答案是D。

21. The biggest whale is ___ blue whale, which grows to be about 29 meters long-the height of _____ 9-story building.

A. the; the　　　 B. a; a　　　 C. a; the　　 D. the; a