◎ 题干
The _________ question is much more difficult than this one.    
[     ]
A. sixth    
B. six    
C. sixteen
D. sixty
◎ 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 _________ question is much more difficult than this one.[ ]A. sixthB. sixC. sixteen D. sixty…”主要考查了你对  【序数词】  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。