单项选择题

Which of the following exercises is suggested

A．Wearing arm weights while you are swimming.
B．Jogging vigorously in one place for a long time.
C．Using bicycles that require you to use both your arms and legs.
D．Walking slowly while swinging your arms back and forth.

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单项选择题According to the conversation, what is one problem with ann exericse

A．They don't get rid of flabby arms.
B．They can damage arm muscles.
C．They aren't acceptable to most people.
D．They can raise one's blood pressure.

单项选择题How did the woman obtain the information about arm exercises

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