第一节单项填空（共15小题；每小题1分，共15分）
从每题所给的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。
例 :It's so nice to hear from her again. _______, we last met more than thirty years ago.
A. What's more B. That's to say
C. In other words D. Believe it or not
21. The sign reads "In case of_______fire, break the glass and push______red button. "
A./; a B./; the C. the; the D. a; a
22. The medicine is on sale everywhere. You can get it at _______ chemist's.
A. other B. some C. another D. any
23. ________ you ought to do now is to see a doctor at once.
A. How B. That C. Which D. What
24. I'm going to spend the winter vacation in Shanghai,_______I have relatives.
A. which B. that C. where D. when
25. Please give Jim the schedule for tomorrow's conference when he _______ back. He is to chairthe conference.
A. will come B. came C. comes D. is coming
26. Though ______in a big city, Peter always prefers to paint the beautiful scenes of country life.
