单项选择题

A．50 minutes.
B．45 minutes.
C．15 minutes.
D．35 minutes.
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单项选择题
A．Exercising the entire body.B．Having your blood pressure taken.C．Losing weight prior to exercise.D．Breathing deeply before each exercise.
A．Exercising the entire body.
B．Having your blood pressure taken.
C．Losing weight prior to exercise.
D．Breathing deeply before each exercise.
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