单项选择题

Questions 4 to 6 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now, listen to the conversation.
How did the woman obtain the information about arm exercise

A．By talking to an expert.
B．By reading an article.
C．By attending an exercise class.
D．By listening to the radio.

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单项选择题

单项选择题

Questions 4 to 6 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now, listen to the conversation. How did the woman obtain the information about arm exercise 您的浏览器不支持 audio 元素。