单项选择题

Shopping behaviors have changed in which areas

A．Purchase of expensive good.
B．Purchase of basic good.
C．Places of shopping.
D．Both A and B.
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单项选择题
What does them in tile last line of Paragraph 2 refer to
A．People in general.
B．Patients.
C．Medical men.
D．Chemists.
单项选择题
The author is ______ people's faith in medicine.
A．in favor of
B．indifferent to
C．criticizing
D．just describing objectively
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