【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(xué)生直到需要使用知識(shí)時(shí)才知道知識(shí)的重要性。

考查連詞辨析、until從句。though雖然、即使,引導(dǎo)讓步狀語從句;as long as只要,引導(dǎo)條件狀語從句;until直到……,引導(dǎo)時(shí)間狀語從句;if“如果表示條件,引導(dǎo)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(shí)時(shí)才知道知識(shí)的重要性,用not…until句型,故選C

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