52. It is obvious that this new rule is applicable to everyone without ___.

A) exception C) modification

B) exclusion D) substitution

51. Last night he saw two dark ___ enter the building, and then there was the explosion.

A) features C) skytches

　B) figured　 D) images

50. Mrs. Smith was so ___ about everything that no servants cold please her.

A) specific C) precise

　B) special　 D) particular

49. He never arrives on time and my ___ is that he feels the meetings are useless.

A) preference C) inference

　B) conference D)reference

48. The little girl was so frightened that she just wouldn’t ___ her grip on my arm.

A) loosen　 C)relieve

　B) remove D)dismiss

47.The ship’s generator broke down, and the pumps had to be operated ___ instead of mechanically.

A) artificially　 C) manually

　B) automatically D) synthetically

46. This is what you should bear in mind: Don’t ___ a salary increase before you actually get it.

A) hang on C) wait on

　B) draw on D) count on

45. As an actor he could communicate a whole ___ of emotions.

A) frame C) number

　B) range D) scale

44. Science and technology have ___ in important ways to the improvement of agricultural production.

A) attached　 C) contributed

　B) assisted　 D) witnessed

43. Most people agree that the present role of women has already affected U.S. society. ___, it has affected the traditional role of men.

A)Above all C) At most

　B) In all　　 D) At last