单项选择题

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

A．At a drug store.
B．At a hospital.
C．At a doctor’s office.
D．At a dentist’s office.

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单项选择题

Questions 11 to 18 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。