单项选择题

Questions 1 to 4 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now, listen to the conversation.
Which of the following is recommended by experts

A．Riding bicycles for a long distance.
B．Walking vigorously with arm weights.
C．Weight lifting.
D．Arm stretchin

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单项选择题

单项选择题

Questions 1 to 4 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation. Which of the following is recommended by experts 您的浏览器不支持 audio 元素。