51. I've kept up a friendship with a girl whom I was at school _____ twenty years ago.
52. He wasn't asked to take on the chairmanship of the society, _____ insufficiently popular with all members.
53. _____ for the timely investment from the general public, our company would not be so thriving as it is.
54. The Social Security Retirement Program is made up of two trust funds,_____ could go penniless by next year.
55. Nowhere in nature is aluminum found free, owing to its always _____ with other elements, most commonly with oxygen.
56. Andrew, my father's younger brother, will not be at the picnic, _____ to the family's disappointment.
57. I would have gone to visit him in the hospital had it been at all possible, but I _____ fully occupied the whole of last week.
58. Help will come from the UN, but the aid will be _____ near what's needed.
59. The chief reason for the population growth isn't so much a rise in birth rates _____ a fall in death rates as a result of improvements in medical care.
60. He claims to be an expert in astronomy, but in actual fact he is quite ignorant on the subject. _____ he knows about it is out of date and inaccurate.
61. Although we feel dissatisfied with the election results, we have to become reconciled _____ the decision made by our fellow countrymen.
A) for
B) on
C) to
D) in
62. Just as the value of a telephone network increases with each new phone _____ to the system, so does the value of a computer system increase with each program that turns out.
A) adding
B) to have added
C) to add
D) added
63. The vocabulary and grammat...[查看详情]
