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39. She is American,＿＿＿ she knows little about American history.

　 A. so　　　　　 B. yet　　　　　 C. and　　　　　 D. therefore

38. It’s really very dangerous. One more step,＿＿＿the baby will fall into the well.

　 A. or　　　　　 B. so　　　　　 C. but　　　　　 D. and　

37. He made another wonderful discovery,＿＿＿ of great importance to science.

　 A. which I think is B. which I think it is

　 C. which I think it　 D. I think is

36. The Oscar is one of the film prizes ＿＿offered to any Chinese actor or actress so far.

　 A. which is not B. that have not been

　 C. that has not　 D. that has not been

35. She won the first prize in the speech contest and＿＿＿ surprized us.

　 A. which　　　　 B. it　　　　 C. as　　　　 D. who　

34. Everything depends on＿＿they will support you about it.

　 A. if　　　　 B. which　　　　 C. whether　　　　 D. that　

33. Getting a right job can be difficult ＿＿＿the students＿＿＿ prepared to deal with the job interview.

　 A. if；won’tB. unless；will

　 C. unless；are　 D. if；are

32. Li Fang is very busy,＿＿＿she’s always helping others with their lessons.

　 A. but　　　　 B. although　　　　 C. so　　　　 D. for　

31. Grandpa used to tell us something about the “Cultural Revolution” ＿＿＿he had time to spare.

　 A. as soon as　　 B. as　　 C. so that　　 D. whenever

30. She said to me,“I’ll tell you the result of the test＿＿＿I know it. ”

　 A. because　　 B. the moment　　 C. after　　 D. though