单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．Make her topic much more general.
B．To focus on a narrower topic.
C．Change to an entirely new topic.
D．Rewrite her research paper.

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单项选择题

单项选择题

Questions 11 to 18 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。