问题
选择题
He knows so much about Russia that he's universally acknowledged as a(n) _____ on Russian affairs.
A．authority
B．routine
C．privilege
D．boundary
答案
答案：A
题目分析：考查名词：A. authority官方，权威B. routine常规C. privilege特权D. boundary边界，句意：他对俄罗斯是如此了解以至于被公认为是俄罗斯问题的权威。选A。
点评：名词的用法主要是考查平时的记忆，对相似的单词要注意辨别，做题时要放在上下文做考虑。还要记忆些相关的搭配，