He knows so much about Russia that he"s universally acknowledged as a(n) _____ o

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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

解析

试题分析：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，

举一反三

The new technology has opened up a very wide _______ of possibilities.

A．extent

B．number

C．collection

D．range

题型：不详难度：| 查看答案

Drug taking and gambling affect all_________of family life.We should stay away from them since young.

A．strengths

B．directions

C．aspects

D．advantages

题型：不详难度：| 查看答案

The medicine bought at a high price turned out to have no _____.

A．influence

B．result

C．effect

D．risk

题型：不详难度：| 查看答案

---If you like,I can give you a ride home.
---That’s a very kind _____ .

A．offer

B．point

C．suggestion

D．service

题型：不详难度：| 查看答案

There might be life on other planets, but so far scientists haven"t found enough ________ to prove it.

A．evidence　　

B．relic

C．mystery

D．reception

题型：不详难度：| 查看答案