第二部分：英语知识运用（共两节, 满分45分）
第一节：单项填空（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.－Shall I look after your house while you are away?
－______.
A. If you like B. It couldn't be better. C. Of course you can. D. It's up to you.
22. When it air pollution, Beijing faces the three “C” s, cars, coal and construction, which lead to Beijing’s thick air pollution.
A. refers to B. comes to C. happens to D. speaks to
