People prefer IP phone calls to ordinary ones because the former is ______. Which of the following will affect the voice qualit

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问题 People prefer IP phone calls to ordinary ones because the former is ______.
Which of the following will affect the voice quality through Internet?

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

答案C

解析

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大学英语三级A级

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