48. --- How long do you think it will be _________ China sends a manned spaceship to the moon?

　 --- Perhaps two or three years.　 (06福建)

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

47.　　 　you’ve tried it. you can’t imagine how pleasant it is. (06北京)

A. Unless　　　　　　　　　 B. Because　　　　　　 C. Although　　　　　 D. When

46. The more I think about him, the more reasons I find for loving him ___ I did. ( 05 湖南 )

　 A. as much as　 　　　 B. as long as　 　　　 C. as soon as 　　　　　　　 D. as far as

45. Allow children the space to voice their opinions, __________ they are different from your　　 own. ( 05 湖南 )

　 A. until　　　 　　　　　　　 B. even if　　　　　　　 C. unless 　　　　　　 D. as though　 　　

44. -Did Jack come back early last night?

　　　 -Yes. It was not yet eight o’clock 　　　　　he arrived home. ( 05 福建 )

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

43. John is the tallest boy in the class, ___________ according to himself. ( 05 安徽 )

A. five foot eight as tall as　　　　　　　　　　　 B. as tall as five foot eight

C. as five foot eight tall as　　　　　　　　　　　 D. as tall five foot eight as

42. That was really a splendid evening. It' s years _______ I enjoyed myself so much. ( 05 安徽 )

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

41. You must keep on working in the evening ______ you are sure you can finish the task in time. ( 05 安徽 )

A. as　　　　　　　　　　　　 B. if　　　　　　　　　　　 C. when　　　　　　　　 D. unless

40. The old tower must be saved, _____________ the cost. ( 05 浙江 )

　 A. however　　　　　　　 B. whatever　　　　　 C. whichever　　　　 D. wherever

39. Unlike watching TV, reading is a highly active process (过程)________ it requires attention as well as memory and imagination. ( 05 江苏 )

A. until　　　　　　　　　　 B. but　　　　　　　　　　 C. unless　　　　　　　 D. for