国家开放大学 / 综合英语（3）
正确率：100%
According to the selection, the muscular sense is used for _ _ _ _ _ _ .
A. the efficiency of our muscles
B. the normal breathing function
C.directing our muscles intelligently
D.the work of only our involuntary muscles
A. the efficiency of our muscles
B. the normal breathing function
C.directing our muscles intelligently
D.the work of only our involuntary muscles
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