单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．a shop.
B．a university campus.
C．a library.
D．an airport.
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单项选择题
A．anemia.B．shingles.C．hepatitis.D．HIV.
A．anemia.
B．shingles.
C．hepatitis.
D．HIV.
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