◎ 题干
True friendship is like sound health, ________ the value is seldom known until it is lost.
A.from whichB.whichC.of whichD.whose
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“True friendship is like sound health, ________ the value is seldom known until it is lost.A.from whichB.whichC.of whichD.whose…”主要考查了你对  【状语从句】【限制性定语从句】【主语从句】【同位语从句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。