Water, which seems to be so simple and common, is ______ makes life possible.

A．that              B．which            C．what             D．where

 

【答案】

C

【解析】

試題分析：:what引導(dǎo)表語(yǔ)從句且作makes的主語(yǔ)。句意：水，看似簡(jiǎn)單普通卻是使生命成為可能的東西。選C。

考點(diǎn)：考查表語(yǔ)從句

點(diǎn)評(píng)：what引導(dǎo)表語(yǔ)從句，在句中起連接作用，也充當(dāng)主賓表。

 

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