【题目】Professor Smith, for ________ work matters most, is devoted to his research work.

A.whoseB.himC.whomD.what

【答案】C

【解析】

考查定语从句关系词。句意:史密斯教授致力于他的研究工作,工作对他最重要。本句为介词+关系代词结构定语从句修饰先行词Professor Smith,且做介词for的宾语,指人,故用whom。故选C

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