单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. What did the professor want to talk to Ann about

A．A vacation trip to Yellowstone Park.
B．A lecture by a visiting professor.
C．Her biology thesis.
D．A research project.

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单项选择题

单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. What did the professor want to talk to Ann about 您的浏览器不支持 audio 元素。