单项选择题

Questions 25—27 are based on the following conversation. You now have 15 seconds to read questions 25—27.
What provoked the conversation

A．An article.
B．An advertisement.
C．A story of a friend.
D．A doctor’s prescription.

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单项选择题

Questions 25—27 are based on the following conversation. You now have 15 seconds to read questions 25—27. What provoked the conversation 您的浏览器不支持 audio 元素。