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l分，满分l5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. It is reported that ______ accident happened at ______ crossroads downtown on Zhongshan road.
A. an; a B. the; a C. the; the D. an; the
22. Once ______in the examination, your grade will be cancelled immediately.
A. caught cheating B. caught to cheat
C. catching stealing D. to be caught to steal
23. ______an hour in the morning and you will be looking for it during the rest of the day.
A. Losing B. To lose C. Lose D. Lost
24. ----Do you know the big news that Joan will marry Frank soon?
----Marry Frank? ______ She told me she would keep single.
A. You can’t be serious. B. Good for you.
C. It doesn’t make sense. D. I can’t agree with you more.
