单项选择题

What is main idea of this passage

A．Advertisement.
B．The benefits of advertisement.
C．Advertisers perform a useful service to communities.
D．The costs of advertisement.
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单项选择题
The focus of the President's program is on ______.
A．investment
B．economy
C．technology
D．tax
单项选择题
What is the requirement of the most liberal wing of the Democratic-party
A．They want a more direct action.
B．They want an incomes policy to check inflation.
C．They want to rebuild industry.
D．They want a wall of protective tariffs.
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