单项选择题

By the sentence "Road warriors can get local, rather than long-distance, dialing rates by making calls with their laptops" ,the author wants to say _________.

A．people fight so as to get back their laptops.
B．people who fight in the street strive to make phone calls at a reduced price.
C．it is possible for people to get cheap phone rates, thanks to the Internet.
D．Internet is changing our life.
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单项选择题
Which of the following sentences is implied in the passage
A．By different beeping sounds, members of the family will easily know whose phone call it is.
B．Telephone companies say that Internet phone calls will be available in the near future.
C．Long-distance calls will be cheaper and cheaper
D．The Internet phones should be on a broadband connection.
单项选择题
The purpose of the passage may well be summarized as _________.
A．to illustrate the functional differences of real telephones and Internet telephones.
B．to demonstrate the working of mobile phones.
C．to show the impact of Internet phone calls on real life.
D．to teach how to make an on-line phone call.
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