单项选择题

The tour of our country by the foreign visitors ________ on the workings of democracy.

A．confirmed
B．focused
C．instructed
D．hampered
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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
单项选择题
Well known for her ________ and tough-minded movie criticism, columnist Pauline also possesses an extensive knowledge of the technical aspects of film making.
A．perceptive
B．receptive
C．deceptive
D．detective
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