◎ 题干
_____ is known to us all is that America is a developed country _____ the First World.
A.Which; belonging to B.as; belonging to 
C.what; belonging to D.It; belonging to
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“_____ is known to us all is that America is a developed country _____ the First World.A.Which; belonging to B.as; belonging toC.what; belonging to D.It; bel…”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。