(A)根据下列句意及所给汉语注释，写出空缺处各英语单词的正确形式。

71.The computer was the most important invention in the _____(二十)century.

Listening to a radio programme in a foreign language is difficult for many of us. Maybe we

　 46　 the language for several years, and　 47　 read it, perhaps even write　 48　 it　 49

listening and understanding the spoken language is　 50　 . Some　 51　 are clever and quick to learn language.　 52　 must study for a long time. Everyone however, can develop his or her listening skills(技能) with practice.

We are good　 53　 in our own language　 54　 we have had years of practice. We have heard it all before. We understand the grammer(语法) and the words. We　 55　 understand the culture (文化)of our language. We can understand, even if we don’t listen carefully.

46. A　 have studied　 B　 are studying C　 will study D　 study

47. A　 be able to B　 are able to C　 will be able to D　 could

48. A　 with B　 by C　 in D　 for

49. A　 And　 B　 Or C　 Then D　 But

50. A　 not easy B　 easy C　 the same D　 not hard

51. A　 ones B　 one C　 people D　 peoples

52. A　 Another　 B　 Other C　 Others D　 The Other

53. A　 readers B　 writers C　 listeners D　 singers

54. A　 since B　 because C　 so D　 for

55. A　 also B　 either C　 none D　 only

45.Take your time,　　　 you’ll make another mistake.

　A　 then B　 and C　 if D　 or

44.Be careful when　　　　 the street.

　A　 to cross B　 cross C　 you cross D　 you’ll cross

43.　　　 are useful animals.

　A　 Cow B　 Pig C　 Panda D　 Sheep

42.I find　　　　 interesting to play games with children.

　A　 that　 B　 how C　 what D　 it

41.-Must we move to the next room ?

　 -No, you　　　 . You may still live here if you like.

　A　 mustn’t　 B　 don’t C　 don’t have to D　 won’t