单项选择题

______ is the most popular activity online.

A．Sending pages of information
B．Sending E-mail
C．Surfing the net
D．Selling the top spot
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单项选择题
What is worth noting from the example of Athens County is that______.
A．greater efforts should be made to improve people's living standards
B．70 percent of the people there have been employed for two years
C．40 percent of the population no longer relies on welfare
D．the living standards of most people are going down
单项选择题
The primary aim of some companies' sponsoring the search engines is to______.
A．cash in on their important role as Web guides
B．boost their avenue
C．reverse a series of losses
D．have their sites visited by the Internet users more
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