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    精英家教网 > 高中英语 > 题目详情

    It is known to us all E-mail is______ efficient than sending a fax.
    A．muchB．manyC．more muchD．much more
    D
    考查比较级。句意“众所周知，电子邮件比传真的效率更高。”根据than可知，应该用比较级，efficient是多音节形容词，比较级借助于more，much可以修饰比较级more。故选D。
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