国家开放大学 / 综合英语（3）
正确率：100%
Intelligent use of the muscles means that _ _ _ _ _ _ _ _ .
A.one always knows what his muscles are doing
B.one performs simple actions without working
C.one’s muscles are used only to the extent necessary for each action they perform
D.one improves muscular action consciously
A.one always knows what his muscles are doing
B.one performs simple actions without working
C.one’s muscles are used only to the extent necessary for each action they perform
D.one improves muscular action consciously
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