单项选择题

A．Crop production became increasingly specialized.
B．Economic depressions lowered the prices of farm products.
C．New banking laws made it easy to buy farmland.
D．The United States increased its agricultural imports.
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单项选择题
A．A week at Tanglewood. B．A movie ticket. C．A vacation in Boston. D．A sum of money.
A．A week at Tanglewood.
B．A movie ticket.
C．A vacation in Boston.
D．A sum of money.
单项选择题
A．Studying. B．Preparing snacks. C．Playing cards. D．Learning how to play bridge.
A．Studying.
B．Preparing snacks.
C．Playing cards.
D．Learning how to play bridge.
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