题目内容
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】
D
【解析】
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题目内容
It is known to us all E-mail is______ efficient than sending a fax.
A.much B.many C.more much D.much more
D
【解析】