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. --- Mike invited us to take part in the party this Sunday.
--- Is tomorrow his birthday?
A. Why not? B. That’s all right. C. What for? D. What a good idea!
22. The manager commanded that all the gates at once.
A. would be shut B. be shut C. should shut D. shut
23. I see! Have you ever had a case _____ someone accused your journalists of getting the wrong end of the stick?
A. which B. that C. what D. where
24．Learning first aid is of great value to us because it can help save one’s life before
doctor comes.
A. a ; the B. 不填 ; a C. a ; a D. 不填 ; the
25. I don’t mind her criticizing, but ____ is how she does it that I object to.
A. that B. it C. this D. which
26. Let’s go out for dinner. It’s my _______ this time.
A. treat B. convenience C. challenge D. settlement
27. Polar explorers have to be extremely______ to bear the climate and other hardships．
A. awkward B. rough C. concrete D. tough
28. To travel to the United States，you must first apply ________the American Embassy________ your visa.
