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 tire conversation.
What suggestion does the woman give to the man

A．Work harder.
B．Study the exam papers.
C．Learn from her since she took the class.
D．Concentrate on the section on prostaglandin.

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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 tire conversation. What suggestion does the woman give to the man 您的浏览器不支持 audio 元素。