单项选择题

A．It tends to vary geographically.
B．It corresponds to an individual’s social class.
C．It changes over a period of time.
D．It depends on whether or not the individual is a gourmet.
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单项选择题
A．It must be trained so it won’t bite.B．It demands more food and space.C．It needs more love and care.D．It must be looked after carefully.
A．It must be trained so it won’t bite.
B．It demands more food and space.
C．It needs more love and care.
D．It must be looked after carefully.
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