2012年12月大学英语六级语法专项练习(8)

46. Soldiers act in ________ to the orders of their officers.
A) obligation        B) objection        C) obedience        D) offence（A）
47. ________ after the Second World War that test pilots first attempted to break the "Sound barrier."
A) It was shortly        B) Until shortly        C) Shortly was it        D) Shortly（C）
48. ________ in the Atacama Desert.
A) It never virtually rains        B) It virtually never rains(www．Examw。com)
C) Never it rains virtually        D) Never virtually it rains（D）
49. Society now requires the university to be a part of the community. ________, students themselves expect to play a role in the affairs of society.
A) Hence        B) However        C) Moreover        D) Otherwise（D）
50. Superconductors lose electrical resistance only ________ subjected to intense cold.
A) through        B) when        C) as        D) by（A）

答案：46. A 47. C 48. D 49. D 50. A