单项选择题

A．Telephones.
B．CD players.
C．Video camera recorders.
D．Home computers.
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单项选择题
It is implied in paragraph 4 that most computer criminals are the employees of the concerned companies.
A．Y
B．N
C．NG
单项选择题
A．They led to the discovery of America.B．They made native American foods popular.C．They brought great wealth to Spain.D．They made native American life styles well-known.
A．They led to the discovery of America.
B．They made native American foods popular.
C．They brought great wealth to Spain.
D．They made native American life styles well-known.
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