【題目】______ is important in study is diligence rather than intelligence.

A. WhichB. What

C. WhoD. When

【答案】B

【解析】

考查主語從句連詞。句意：學習中重要的是勤奮而不是智力。本句中what指代事物引導主語從句，并在句中充當主語。選項中when屬于連接副詞，不能在句中作主語；連接代詞who指人；which通常指特定范圍之內(nèi)的人或物，而本句并沒有范圍限制。故B項正確。

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