单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. What does the speaker say that people should do to protect their health

A．Join a sports organization.
B．Try a new routine occasionally.
C．Keep regular working hours to avoid fatigue.
D．Cut down on activities when sick.

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单项选择题

单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. What does the speaker say that people should do to protect their health 您的浏览器不支持 audio 元素。