单项选择题

How many people are there in the United States in 1987

A．259 million.
B．117 million.
C．175 million.
D．230 million.
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单项选择题
It can be inferred that poverty _________.
A．is defined very concretely in every period
B．is difficult to define in specific terms
C．is defined in material terms
D．is defined according to the standard of each decade
单项选择题
An auction catalogue gives prospective buyers _________.
A．the current market values of the goods
B．details of the goods to be sold
C．the order in which goods must be sold
D．free admission to the auction sale
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