单项选择题
36（）
A．case of
B．a case
C．any case
D．court
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单项选择题
Which of the following statements about the ways of communicating ideas and feelings mentioned in the passage is false
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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单项选择题
The author specifically mentions that speech is ______.
A．often used when communicating by touch
B．necessary for satisfactory communication by gesture
C．the only highly developed system of communication
D．the most developed form of communication based on heating
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