单项选择题

Questions 23 to 25 are based on the conversation you have just heard.

A．What kind of medicine to develop.
B．When to advertise the drugs.
C．How to promote their products.
D．The regulations of medicine advertising.
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单项选择题
A．Rub his boots.B．Wear his boots.C．Buy a pair of boots.D．Bring some books.
A．Rub his boots.
B．Wear his boots.
C．Buy a pair of boots.
D．Bring some books.
单项选择题
A．It distinguishes happy men from others.B．It is a luxury enjoyed by few.C．It is a unifying power.D．It serves as a daily necessity.
A．It distinguishes happy men from others.
B．It is a luxury enjoyed by few.
C．It is a unifying power.
D．It serves as a daily necessity.
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