单项选择题

What form of exercise does the woman mention

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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热门试题

单项选择题

According to the conversation, what is one problem with arm exercises

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

What was the origin of the traditional image of robot

A．Welding car.
B．Computer.
C．Machine.
D．Science fiction.