◎ 题干
________ we admit that there are still some problems about NMET,we don’t mean that it is of no use.
[     ]
A.Until  
B.While
C.As  
D.Unless
◎ 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“________ we admit that there are still some problems about NMET,we don’t mean that it is of no use.[ ]A.UntilB.WhileC.AsD.Unless…”主要考查了你对  【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。