单项选择题

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 fort
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单项选择题
A．Some rocks.B．Her ticket.C．Her suitcase.D．Her handba
A．Some rocks.
B．Her ticket.
C．Her suitcase.
D．Her handba
单项选择题
A．Exercising the entire body.B．Having your blood pressure taken daily.C．Losing weight prior to exercising.D．Weighing in before each exercise session.
A．Exercising the entire body.
B．Having your blood pressure taken daily.
C．Losing weight prior to exercising.
D．Weighing in before each exercise session.
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