单项选择题

The author explains that he will deal with reception of communication first because ________.

A．communication actually takes place when the message is received
B．there are more means of receiving than of sending communications
C．reception of communications involves use of the senses
D．it is difficult to organize by the means of sending communications
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单项选择题
The author specifically mentions that speech is ________.
A．often used when communicating by touch
B．the most developed form of communication based on hearing
C．the only highly developed system of communication
D．necessary for satisfactory communication by gesture
单项选择题
Which of the following statements about the ways of communicating ideas and feelings mentioned in the passage is NOT true
A．They can be used to communicate over long distances.
B．They require both a sender and a receiver.
C．They involve use of conventional signs and symbols.
D．They utilize the senses for reception.
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