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.
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单项选择题
According to the author, which of the following statements is true
A．The Internet provides a lot of reading materials only.
B．The Internet defies the international boundaries.
C．The Internet will equalize the technical differences.
D．The Internet will affect our modern life by no means.
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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