31. -Why does the lake smell terrible?

-Because large quantities of water　　　　　　 .

　A. have polluted　　　　　　 B. is being polluted　　　　　 C. has been polluted　　　 D. have been polluted

30.______achievement , last week’s ministerial meeting of the WTO here earned a low , though not failing .

A. In terms of　　　 B. In case of　　　 C. As result of　　　　 D. In the eyes of

29. 　　　　　　he is well again, he can go on with his English study.

　A. Ever since　　　　　　　　　 B. Now that　　　　　　　 C. So that　　　　　　　　　　　　 D. As if

28.　 Because of the snow , many parts of the countryside are only _____ by helicopter.

A. potential　　　 B. productive　　 C. accessible　　 D. visual

27. Wolves would starve if food was difficult　　　 , especially during the cold winter months.

　A. to be found　　　　 B. to find　　　　　　　　　　　　　 C. finding　　　　　　　　　 D. being found

26. Jane seems strange, I find　　　　　 hard to get along with her.

　A. me　　　　　　　　　　　　 B. it　　　　　　　　　　　　　　 C. her　　　　　　　　　　　　 D. that

25. -Did you ring her last night?

-Yes, I　　　　　 her, but she wasn’t at home.

　A. really ring　　　　　　　　　　 B. did ring　　　　　　　　　 C. did rang　　　　　　　　 D. do ring

24. The points put forward at the conference　　　　　 the government should pay more attention to the poor were widely accepted.

　A. that　　　　　　　　　　　 B. where　　　　　　　　　　　　　 C. when　　　　　　　　　　　　　　 D. which

23. I have no idea　　　　　 Jim could get so much money in such a short time.

　A. what　　　　　　　　　　　　　 B. how　　　　　　　　　　　　 C. why　　　　　　　　　　　 D. when

22. Although this　　　　　 sound like a simple task, great care is needed.

　A. must　　　　　　　　　　　　　　 B. may　　　　　　　　　　　 C. shall　　　　　　　　　　　 D. should