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)
21. ______ the teacher has given permission, ______allowed to use the equipment in the lab.
A. Only if, are the students B. If only, the students are
C. If only, are the students D. Only if the students are
22. ---Why did the policeman question Tom?
---He was ________of taking part in the killing.
A. doubted B. suspected C. charged D. accused
23. Anyone _______ bags, boxes, or whatever, was stopped by the police.
A. seen carry B. seen carrying C. saw to carry D. saw carrying
24. “I called you yesterday. A woman answered, but I didn’t recognize her voice.” “Oh, it _____ my aunt Jean.”
A. must be B. must have been C. might be D. can have been
25. What great trouble the boy _____his father to give up smoking!
A. had to persuade B. had persuaded C. had persuading D. had persuade
26. Ten professors______ the me
