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.The bird ______ its wings and flew to the south.
A. beat B. hit C. strike D. Struck
A warm thought suddenly came to me __________ I might use the pocket money to buy some flowers for my mother’s birthday.
| A．if | B．when | C．that | D．which |
All living organisms (有机物), __________ their unique identity, have biological, chemical and physical characteristics in common.
| A．as a consequence of | B．for the sake of | C．in terms of | D．regardless of |
I have no idea when the bus will arrive. I for at least half an hour in such cold weather.
| A．had waited | B．have waited | C．will wait | D．have been waiting |
John has got a fever these days, and he says he doesn’t want to see a doctor, but I’m afraid he has no .
| A．alternative | B．extra | C．treatment | D．possibility |
---Dad, I'm confused what I am going to do after graduation.
---You'd better first explore your talents and get to know yourself so as to find out __________ your real interests lie.
| A．what | B．where | C．which | D．how |