单项选择题

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

A．Present a new theory to the class.
B．Read more than one article.
C．Read the book more thoroughly.
D．Write a better article for the class.

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