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33. If we know about what causes endangerment, we may be able to takes measures______ it is too late.

A. until　　　　　　　　　　 B. unless　　　　　　　　　　　 C. when　　　　　　　　　　　 D. before

32. Our school ______the students to collect used batteries, ______a better environment.

A. appealed; in the hope of　　　　 　　　　　　 B. appealed; in the hope that

C. appealed to ; in the hope of　　　 　　　　　　 D. appealed to; in the hope that

31. Hardly ______their supper when the power was cut off.

A. he finished　　　　　　　　　 　　　　　　　　　　　　　　 B. he had finished　

C. did he finish　　　　　　　　　　　　　　　　　　　 　　 D. had he finished

30.I look on it as a good opportunity to _________ fresh skills and broaden my knowledge.

A. acquire　　　　　 B. require　　　　　 　 C. accept　　　　　　 D. receive

29. —May I use your cellphone?

　 —Sorry. It’s out of order and it ______.

A. is repaired　　　　　　　　　　　　　　　　　　　　　　　 B. is under repairing　　　

C. has been repaired　　 　　　　　　　　　　　　　　　 D. is being repaired

28. —What should I do now?

　 —I’d prefer ______if you didn’t smoke in front of children.

A. one　　　　　　　　　　　 B. that　　　　　　　　　　　　　 C. it　　　　　　　　　　　　　　 D. this

27. I think we paid too much for the house, ______ that we needed to get the roof repaired.

A. considered　　　　　　 B. considering　　　　　　　 C. if considered　　　　　　 D. to consider

26. —Your flight is boarding now. We’ll have to part.

　 —Don’t feel blue. ______.

A. A still tongue makes a wise head　　　　

B. A single flower does not make a spring

C. All good things come to an end　　　　　

D. All that glitters is not gold

25. The G20 summit (峰會) in London could be remembered as the turning point when the______ between the developing and developed world ends for ever.

A. tendency　　　　　　　 B. intention　　　　　　　　　 C. appreciation　　　　　　　 D. distinction

24. It was for this reason ______the new plan______ helping the people who are suffering from hunger.

A. that; aimed to　　　　 　　　　 　　　　　　　　　　 B. why; was aiming at　　　　　　　　

C. that; was aimed at　　　　　　　　　　　　　　　　　　 D. why;aiming to