◎ 题干
After all, ______ makes a new invention such a wonderful thing is ______ it allows us to do something we could not do before.
[     ]
A. what ; what    
B. that ; that        
C. what; that      
D. that;  what
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“After all, ______ makes a new invention such a wonderful thing is ______ it allows us to do something we could not do before.[ ]A. what ; what B. that ; tha…”主要考查了你对  【连接代词】【从属连词】  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。