单项选择题

What's the main idea of the passage

A．Online advertising is more effective than TV advertising.
B．Google and Yahoo! are challenging Microsoft in the field of advertising.
C．Google's new advertising service could make the internet an even more valuable marketing medium.
D．Online advertising is popular with advertisers.

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单项选择题

By saying It will represent a 'watershed moment' in the evolution of the internet as an advertising medium , the trade magazine suggests

A．Google and Yahoo! share advertising revenues with television networks.
B．The success of Google and Yahoo lakes a turning-point to online advertising.
C．America's three big television networks play an important role in the development of advertising medium.
D．Google and Yahoo! build up their status in advertising.

单项选择题

What is the purpose of giving the example of January poll by Princeton Survey Research Associates

A．Patients commonly pay cash for their medical service.
B．Patients are reluctant to tell their embarrassing illness to doctors.
C．The Princeton Survey Research Associates enjoys the best reputation in conducting polls.
D．The patients' disguising of their medical information widely exists.