第二部分英语知识运用（共两节.满分45分）
笫一节 单项填空（共15小题，每小题1分，共15分）
从A、B、C、D四个选项中.选出可以填入空白的最佳选项，并在答题卡上将该项涂黑。
21. With ______ word “PM 2.5” repeatedly appearing in ______ media reports, the public can’t help wondering what it really means.
A. the; \ B. a; the C. the; the D. \; the
22. I would appreciate ________ if you could give me a lift to Lakefront School.
A. that B. one C. you D. it
23. One-third of the country ________ covered with trees and the majority of the citizens ________ black people.
A. is; is B. is; are C. are; are D. are; is
24. This electric bicycle is ______ that one; I’d like to buy neither of them.
A. not lighter than B. not as light as C. as lighter as D. no lighter than
25. ---Is Ms. Liu still teaching in this school?
---I’m afraid not. She is said _______ the school as she was diagnosed with liver cancer.
A. having left B. to have left C. to leave D. leaving
26. ---How could I thank you enough?
