23. I'm very grateful for your help and hope to do something for you_____in the future.

A. in exchange B. instead C. in return D. in particular

24. I can ____you that the animals are well cared for in our zoo, so you needn't worry about them.

A. suppose B. assume C. assure D. grant

25. The drowning boy made a _____ attempt to catch the rope thrown to him.

A. dangerous B. graceful C. gentle D. desperate

26. If we_____early tomorrow morning, we will reach the coast before dark.

A. take off B. set off C. set up D. take up

27. A lot of people mistake John for Bill because they _____ each other in appearance too much!

A. weave B. utilize C. reveal D. resemble

28. When there are cordial relations between the two countries, we mean there exists a_____ relationship between them.

A. friendly B. hostile C. fertile D. complicated

29. The patient's recovery was very encouraging as he could_____get out of bed without help.

A. only B. almost C. me'rely D. hardly

30. At the job interview, Mr. Brown gave a good _____ of himself and finally got a job as a salesman.

A. opinion B. idea C. cry D. account

31. As is well known, eating too much fat can_____heart disease and cause high blood pressure.

A. add to B. attend to C. contribute to D. apply to

32. A club is a place to make frequent_____with friends.

A. accounts B. attempts C. contents D. contacts

33. _____the obvious differences in size and population, the states of America have many things_____ common.

A. Although; on B. Though; in

C. Despite; in D. Because of; on

34. Scientists say it may be five or six years _____this medicine is tested on human beings.

A. since B. before C. after D. when

35. With larger numbers of graduates than ever before, just having a degree will no longer be enough to make you _____in the crowd.

A. stand up B. stand by C. stand for D. stand out

36. The doctor tried to do an experiment to find out the_____of the medicine on the mice.

A. cause B. result C. reason D. effect

37. This is only one of the laundries in the district modem equipment.

A. that have B. which have C. that has D. what has

38. Skating can be good for you _____ correctly.

A. though doing B. though done C. if done D. if doing

39. By the end of last week 611 people from 49 countries to attend the meeting, with nearly half coming from the United States, Germany and Britain.

A. had registered B. have registered

C. registered D. were registered

40. It was suggested that____big event like the Year of Russia in China should certainly benefit_____relationship between the two countries.