单项选择题

Questions 22 to 25 are based on the conversation you have just heard.

A．He thinks it’s mainly for children.
B．He feels it would be worthwhile.
C．He believes it is too complicated.
D．He thinks it may not be very profitable.
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单项选择题
A．Impatient.B．Serious.C．Enthusiastic.D．Nervous.
A．Impatient.
B．Serious.
C．Enthusiastic.
D．Nervous.
单项选择题
A．They don’t need conventional signs and symbols.B．They only require a receiver in communication.C．The distance between communicators can’t be too long.D．They are not restricted in time and space.
A．They don’t need conventional signs and symbols.
B．They only require a receiver in communication.
C．The distance between communicators can’t be too long.
D．They are not restricted in time and space.
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