第二部分 单项选择(共11题，满分11分)
从所给的A、B、C和D四个选项中，选出最佳选项。
21. Even Big Ben failed to __________ correctly when its chiming mechanism (敲钟装置) failed.
A. recognize B. strike C. attack D. beat
22. There was a __________ cut and all the lights went out.
A. flash B. power C. darkness D. gas
23. He often talked about the artists and paintings __________ impressed him greatly.
A. which B. who C. that D. 不填
24. We’re going away in June but __________ that I’ll be here all summer.
A. rather than B. no more than C. more than D. other than
25. The locals were encouraged to __________ and kill mice to stop the spread of the virus.
A. trap B. contact C. pack D. challenge
