单项选择题

Communication is the process of ______a message from a source to an audience via a channel.

A．transmitting
B．submitting
C．transforming
D．switching
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单项选择题
______ she realized it was too late to go home.
A．No sooner it grew dark than
B．Hardly did it grow dark that
C．Scarcely had it grown dark titan
D．It was not until dark that
单项选择题
A．bothB．eitherC．neitherD．first
A．both
B．either
C．neither
D．first
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