47. Fiber-optic cables can carry hundreds of telephone conversations ______.
A) simultaneously
B) spontaneously
C) homogeneously
D) contemporarily
注：三剑客
词汇：simultaneously，spontaneously，contemporarily
48. The police were alerted that the escaped criminal might be in the ______.
A) vain
B) vicinity
C) court
D) jail
注：vicinity 附近，邻近
49. Whether you live to eat or eat to live, food is a major ______ in every family's
budget.
A) nutrition
B) expenditure
C) routine
D) provision
注：1. expenditure 花费 2. budget 预算（六级最爱）
50. Now a paper in Science argues that organic chemicals in the rock come mostly from ______ on earth rather than bacteria on Mars.
A) configuration
B) constitution
C) condemnation
D) contamination
注：2道理科题；2道文科题；1道环保题。
51. There is much I enjoy about the changing seasons, but my favorite time is the ______ from fall to winter.
A) transmission
B) transformation
C) transition
D) transfer
注：1. transmission 广播电视节目的传送；疾病的传播；文化的传递
2. transformation 变革
3. transition 季节的过度，时间的更替，社会制度的转型
4. transfer 转学，调任工作
52. I think we need to see an investment ______ before we make an expensive mistake.
A) guide
B) entrepreneur
C) consultant
D) assessor
注：consultant 顾问
53. The ______ on this apartment expires in a year's time.
A) treaty
B) lease
C) engagement
D) subsidy
注：lease 租约
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