单项选择题

______is the sending and receiving of the messages by computer.It is a fast．low-cost way of communicating worldwide.

A．LAN
B．Post office
C．E-Mail
D．Interface
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单项选择题
In C language，one method of communicating data between functions is by______。
A．arguments
B．variables
C．messages
D．constants
单项选择题
C++fully supports______programming.
A．visual
B．object-oriented
C．logic
D．natural language
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