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【题目】It is not always easy for the public to see ________ use a new invention can be of to human life.

A.whoseB.whatC.whichD.that

【答案】B

【解析】

考查宾语从句连接词。句意:对于公众来说看到一项新发明对人类有什么用途并不总是很容易的。what在宾语从句中作定语,意为“什么样的”,A. whose谁的;C. which哪一个;D. that引导名词性从句,没有意义,不作成分,其它三项不合题意。故选B

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