单项选择题

Questions 12 to 15 are based on the conversation you have just heard.

A．The Students" Union.
B．The faculty.
C．The advertisement department.
D．The volunteer students.

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单项选择题

单项选择题

Questions 12 to 15 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。