45.My grandfather had always taken a _______interest in my work, and I had an equal admiration for the stories of his time.

A) weighty B) keen C)vague D)splendid

46.If you don’t like to swim, you _____as well stay at home.

A) may B)can C)would D)should

47.Thomas Jefferson and John Adams died on July 4,1826,the fiftieth_ ______of American Independence.

A)ceremony B) anniversary C)occasion D)occurrence

48.We are quite sure that we can ______our present difficulties and finish the task according to schedule.

A ) get away B)get across C)get off D)get over

49.Being ignorant of the law is not accepted as an ______for breaking the law.

A) option B)intention C)approval D)excuse

50.We have arranged to go to the cinema on Friday, but we can be _______and go another day.

A) probable B)reliable C)flexible D)feasible

51.The defense lawyer was questioning the old man who was one of the ______of the murder committed last month.

A) witnesses B)audiences C)viewers D)observers

52.These overseas students show great ______ for learning a new language.

A) faith B)authority C)enthusiasm D)convention

53."You try to get some sleep. I'll _____the patient's breakfast, "said the nurse.

A)get to B)see to C)lead to D)stick to

54.The bank refused to ______him any money, so he had to postpone buying a house.

A) loan B)borrow C)lease D)credit

55.John cannot afford to go to university, _______going abroad.

A) nothing to speak of B)not to speak of C) anything but D)nothing but

56.There's the living room still to be _____,so that's my next project.

A) decorated B)dissolved C)assessed D)abandoned

57.It may be necessary to stop ______in the learning process and go back to the difficult points in the lessons.

A) at case B) at length C)at intervals D) at a distance

58.Most laboratory and field studies of human behavior ______taking a situational photograph at a given time and in a given place.

A) attach B)compose C) involve D)enclose

59.Yor can hire a bicycle in many places. Usually you'll have to pay a _________.

A)deposit B) deal C)fare D)fond

60.Dr.Smith was always ______the poor and the sick, often providing them with free medical care.

A) tended by B)absorbed in C)reminded of D)concerned about