大学英语四级考试模拟试题及答案8

41. Vitamins are complex _______ that the body requires in very small mounts.
A) matters C) particles
B) materials D) substances

42. Apart from caring for her children, she has to take on such heavy _______ housework as carrying water and firewood.
A) time-consumed C) time-consuming
B) timely-consumed D) timely-consuming

43. Anna was reading a piece of science fiction, completely _______ to the outside world.
A) having been lost C) losing
B) to be lost D) lost

44. The police are trying to find out the _______ of the woman killed in the traffic accident.
A) evidence C) status
B) recognition D) identity

45. All human beings have a comfortable zone regulating the _______ they keep from someone they talk with.
A) distance C) range
B) scope D) boundary

46. We have planned an exciting publicity _______ with our advertisers.
A) struggle C) battle
B) campaign D) conflict

47. _______ the help of their group, we would not have succeeded in the investigation.
A) Besides C) But for
B) Regardless of D) Despite

48. _______ much is known about what occurs during sleep, the precise function of sleep and its different stages remains largely in the realm of assumption.
A) Because C) Since
B) For D) While

49. John doesn’t believe in _______ medicine; he has some remedies of his own.
A) standard C) routine
B) regular D) conventional

50. Owing to _______ competition among the airlines, travel expenses have been reduced considerably.
A) fierce C) eager
B) strained D) critical