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. --Sorry, sir. I didn’t mean to hurt you, showing you these pictures.
--________. It just reminded me of my old friends.
A. Not at all B. No sorry, please C. Never mind D. All the best
22. I would appreciate ______ back this afternoon so that we can make an early decision.
A. you to call B. you call C. you’re calling D. your calling
23. Only _________ a human being.
A. when is it hungry a lion will attack B. When it is hungry a lion will attack
C. when it is hungry will a lion attack D. when is it hungry will a lion attack
24. It is advised that windows should be opened now and then for air to______, which makes the
air in your room fresher.
A. flow B. expand C. circulate D. spread
25.____ to the research all day without proper relaxation accounts for the decline(下降) of his health.
A. Devoted B. Being devoted C. Having devoted D. Having been devoted
26. Nobody but a few little boys ___ in the garden now.
A. are playing B. play C. plays D. is playing
27. There is still much to discuss. We shall, ______, return to this item at our next meeting. A. therefore B. however C. otherwise D. briefly
28. After years of careful observation in the wild, Jane Goodall was finally able to ______ the
