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
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
单项选择题
According to Savage, the manager of 3M, videoconferencing is ______.
A．expensive in installing the system
B．efficient in saving employees for meetings
C．worthwhile by not sending employees for meetings
D．useful in changing boring meeting into exiting ones
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