单项选择题

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

A．Students’ opinions of the program they take.
B．The situation of biology education.
C．The quality of professors.
D．The quality of equipment.

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单项选择题

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。