单项选择题

A．It is good for improving muscle tone.
B．It helps strengthen the heart.
C．It helps develop mental toughness.
D．It does good to his skills.
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单项选择题
A．Respect for education and elders.B．Wealthy parents.C．Excellent learning facilities.D．Better intelligence and health.
A．Respect for education and elders.
B．Wealthy parents.
C．Excellent learning facilities.
D．Better intelligence and health.
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