【題目】Some students don’t know the importance of knowledge _____they need to use it.

A.thoughB.as long asC.untilD.if

【答案】C

【解析】

句意:有些學生直到需要使用知識時才知道知識的重要性。

考查連詞辨析、until從句。though雖然、即使,引導讓步狀語從句;as long as只要,引導條件狀語從句;until直到……,引導時間狀語從句;if“如果表示條件,引導條件狀語從句;從文字的表層意思推斷空格處指直到需要使用知識時才知道知識的重要性,用not…until句型,故選C。

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