单项选择题

A．One improves muscular action consciously.
B．One performs simple actions without working.
C．One always knows what his muscles are doing.
D．One’s muscles are used only to the extent necessary for each action they perform.
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单项选择题
A．It is harmful to the body and mind.B．It is good to personal relationships.C．It is harmful to the family happiness.D．It is a good change after idling for a long time.
A．It is harmful to the body and mind.
B．It is good to personal relationships.
C．It is harmful to the family happiness.
D．It is a good change after idling for a long time.
单项选择题
A．He will have no choices left.B．He had better go there quickly.C．He should go when he has some time.D．The books are a bit scratched and are of poor quality.
A．He will have no choices left.
B．He had better go there quickly.
C．He should go when he has some time.
D．The books are a bit scratched and are of poor quality.
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