单项选择题

A．People would not buy more food than was necessary.
B．Food was delivered to people two or three times a week.
C．People had effective ways to preserve their food.
D．Food was sold fresh and did not get rotten easily.
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单项选择题
A．Take some money to the housing office.B．Inform the director of student housing in a letter.C．Fill out a form in the history.D．Maintain a high grade average.
A．Take some money to the housing office.
B．Inform the director of student housing in a letter.
C．Fill out a form in the history.
D．Maintain a high grade average.
单项选择题
A．The size of the room.B．Long working hours.C．The hot weather.D．The fan in the room.
A．The size of the room.
B．Long working hours.
C．The hot weather.
D．The fan in the room.
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