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. —Bob，are you free at the moment？I have to ask you some questions.
—________.
A．It's a pleasure B．Ask，please C．Help yourself D．Yes，go ahead
22. The fact __________Jenny didn’t catch the train made her very disappointed.
A. which B. what C. that D. why
23. —Are you worried about her safety?
—Just ________.She isn't alone.
A．entirely B．gradually C．generally D．slightly
24. she talks _______ she herself were an expert(专家) on the teenagers.
A. as if B. even though C. even if D. so that
25. I had no idea when World War Ⅱ________，so I turned to my teacher for help.
A．broke down B．broke out C．broke in D．broke away
26. —Would you permit me ________ here?
—Sorry. We don't permit ________ here in the reading room.
A．smoking; smoking B．to smoke; to smoke
