◎ 题干
The child has learned _       _ of the words in this book.    
[     ]
A. two thirds    
B. two third      
C. second three
D. second threes
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“The child has learned _ _ of the words in this book.[ ]A. two thirds B. two thirdC. second three D. second threes…”主要考查了你对  【分数】  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。