单项选择题

How much of the WHO's budget should the United States pay in terms of its wealth

A．quarter.
B．28%
C．More than 20 million
D．A fifth.
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单项选择题
Advertising is useful to the economy in the sense that.
A．it helps to inform consumers about new products.
B．it gives the designers a chance to make money .
C．it helps to create a market for new products.
D．it gives the producers an excuse to raise prices.
单项选择题
Consumers will not benefit from advertising until it becomes successful.
A．and the producer lowers the price
B．with mass production.
C．before a new market has been created.
D．or the manufacturer has recovered the cost.
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