◎ 题干
It is known to us all E-mail is ______ efficient than sending a fax.
[     ]
A. much
B. many
C. more much
D. much more
◎ 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“It is known to us all E-mail is ______ efficient than sending a fax. [ ]A. muchB. manyC. more much D. much more …”主要考查了你对  【副词】  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。