2012年12月大学英语六级词汇专项模拟(2)

　46. She remains confident and ______ untroubled by our present problems.
A) indefinitely
B) infinitely
C) optimistically
D) seemingly
注：infinitely 非常地，无限地，极大地

　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 wｗw.ExamＷ.CoM
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。