单项选择题

The author of this passage mentions "a road" in his introduction of the IP phones（）

A．to make it easier for the reader to understand the new technology
B．to imply that the phone calls are usually made on the road
C．because people usually would share a road with each other
D．because the road you are walking on is usually empty

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单项选择题

Which of the following statements is NOT true（）

A．With VoIP technology, the phone caller's voice will be broken into pieces.
B．Different types of technology are accompanied with different advantages.
C．With VoIP technology, the quality of voice will always remain the same.
D．On the Internet, information will be broken into pieces and then connected again.

单项选择题

Which of the following will affect the voice quality through Internet（）

A．The speed of your voice.
B．The speed of the Internet.
C．The Internet traffic.
D．The service of the operator.