2012年12月大学英语六级语法专项练习(16)

　46. We have had to raise our prices because of the increase in the cost of ________ materials.
A) primitive      B) rough      C) original      D) raw（A）
47. Indeed, almost every scientist now finds it impossible to read all the works relevant to his own subject, ________ extensively outside of it.
A) much more to read      B) much less reading外语学习网
C) much less to read      D) still more reading（B）
48. It is up to the Government to tackle the air pollution problem and ________ measures in line with the council’s suggestions.
A) set about      B) work out      C) fill up      D) bring over（B）
49. All that day my father was in ________ as he had lost his wallet.
A) great anxiety      B) ambition      C) ill humour      D) hospitality（C）
50. We preferred to postpone the meeting ________ it without the presence of our president.
A) rather than hold      B) than to hold      C) rather than held      D) to holding（A）