单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

A．The importance of morning exercise.
B．People’s preference in taking exercise.
C．The man’s working experience.
D．The man’s family life.

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单项选择题

Questions 19 to 22 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。