单项选择题

Which of the following is the best possible title for this essay

A．An Introduction to Desktop Video Conferencing.
B．Modern Office and Video Conferencing.
C．A New Solution for Office Work.
D．Face to Face with Your Partners.

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单项选择题

According to the author, the breakthrough of this technology starts firm ______.

A．computer science
B．telecommunication technology
C．phoning services
D．booking technology

单项选择题

From the passage, we can conclude that ______.

A．video conferencing will be an instance of superiority for some companies
B．video conferencing will be applied where communication is important
C．video conferencing will be a standard configuration for all people's computers
D．video conferencing still have a lot of room for improvement