单项选择题

A．Hospital employees.
B．City Hall officials.
C．Packer Hall residents.
D．The engineering students.
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单项选择题
A．Membership in a co-op.B．The benefits of health food.C．Shopping in the supermarket.D．The current cost of food.
A．Membership in a co-op.
B．The benefits of health food.
C．Shopping in the supermarket.
D．The current cost of food.
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