单项选择题

Questions 9 to 12 are based on the conversation you have just heard.

A. In a professor’s office. B. In a medical doctor’s office.
C. In an auditorium. D. In a gym.

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单项选择题

Questions 9 to 12 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。