专四

单选题请在第(38)处选择正确答案_______

A.hence
B.therefore
C.however
D.indeed

参考答案:C进入在线模考
C。考查逻辑衔接。此段开始介绍电脑的出现改变了通信革命的进程,和上文是转折关系,故选however。

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