1、这个班上有30位学生，大多数来自城市。

55. American women usually identify their friends as someone

_____they can talk frequently.(2004)

A. who　　　　 B. as　　　　　　 C. about which　　　　　 D. with whom

54. I can think of many cases _________ students obviously knew a

lot of English word and expressions but couldn’t write a good essay.(2003)

A. why　　　　　　　　 B. which　　　　　　　 C. as　　　　　　 D. where

53. It is these poisonous products ___ can cause the symptoms of the

flu, such as headache and aching muscles.(2003)

A. who　　　　 B. that　　　　　 C. how　　　　 D. what

52. He’s got himself into dangerous situation ______he is likely to

lose control over the plane.(2001)

A. where　　　　　　 B. which　　　　　　　 C. while　　　　 D. why

51. Greenland, _______ island in the world, covers over two million

square kilometers.(2000)

A. it is the largest　　　　　　　　　　 B. that is the largest

C. is the largest　　　　　　　　　　　 D. the largest

50. In Shanghai many tall buildings have been put up ____ there used

to be poor old houses.

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

49. The chemical works they paid a visit ___ south of the town.

A. stands to　 B. stand to　 C. to stands　 D. to stand to

48. These books _____ he read some were written by Lu Xun.

A. which　　　　　　　　 B. among which　

C. of　 which　　　　　　 D. with which

47. This is ____ the river was polluted.

A. what　　 B. how　　　 C. that　　　 D. whether