第二部分英语知识运用（共两节，满分35分j
第一节单项选择（共15小题；每小题1分，满分15分）
从A、B、C、D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。
21. We can never expect ________bluer sky unless we create _____less polluted world
A. a;a B. a ;the C. the ;a D .the; the
22.- What took you so long?
- I got lost. I have no _______of direction.
A. sense B. ability C. knowledge D. feeling
23.______ by Ren Changxia's deeds, many young girls want to be a policewoman in the future.
A. To be inspired B. Having inspired C. Being inspired D. Inspired
24. Only after a baby seal is pushed into the sea by its mother _______to swim.
A. how will it learn B. will it learn how
C. it will learn how D. and it learns how
25. - The water was left running all night long.
- Yes. It seemed that John ___. He was the last one to leave the lab.
