单项选择题

The power of videoconferencing lies in that it can ______.

A．enhance the communication
B．increase productivity
C．understand the real meaning of the other party
D．all of the above
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单项选择题
What is the proper meaning of the word cue in the second paragraph
A．Communication
B．Hint
C．Explanation
D．Production
单项选择题
The characteristic of ASARDA in using videoconferencing is that ______.
A．it takes them 4 years to build the dynamic program
B．they spend significant money in installing the equipment
C．the desktop units make them have full control of multipoint needs
D．they have the latest software developed by other companies
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