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.
According to the conversation, what is one problem with arm exercise

A．It doesn’t get rid of fat arms.
B．It can damage arm muscles.
C．It is not acceptable to most people.
D．It can raise one’s blood pressur

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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. According to the conversation, what is one problem with arm exercise 您的浏览器不支持 audio 元素。