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。
21．-----May I ask you a question after class, sir?
------_______, but not during my lunch break.
A. Go ahead B. Sure C. Anytime D. Sorry
— Can you come to my birthday party tonight?
— I’d love to, but I______ on a patient at 6 o’clock.
| A．will operate | B．am operating |
| C．will be operating | D．will have operated |
Gradually, you will realize the things that matter are______that can’t be bought with money.
| A．these | B．those | C．ones | D．some |
— Hello, may I speak to Mr. Wu?
— I’m afraid he is not in now. ______ I take a message?
| A．Should | B．Can | C．Will | D．Shall |
—Did she say something in the lecture that _____you?
---Not really. Actually I felt sleepy over his speech.
| A．applied to | B．attached to | C．referred to | D．appealed to |
Scientists don’t think that a warm winter always has a negative influence on our life,____?
| A．don’t they | B．do they | C．hasn’t it | D．has it |