单项选择题

The writer of the passage is talking about the Internet mainly on the basis of______.

A．personal use
B．corporate use
C．business use
D．technical use
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单项选择题
Which of the following is NOT available so far but yet to develop
A．Emerging standards.
B．Voice communication.
C．Video tele-conferencing.
D．High-speed ISDN and cable links.
单项选择题
In the future, according to the writer, all of the following are expected EXCEPT______.
A．more accessible voice communication
B．cheaper cable links more commonly available
C．more global pen friends through emails
D．easier and better video tele-conferencing
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