我
- A.voluntary muscles
- B.involuntary muscles
- C.muscle fibers
- D.sensory nerves
- A.contract
- B.stretch
- C.retract
- D.do all of the above
- A.textured like wood
- B.colored like wood
- C.smooth and red
- D.short and thick
- Are you aware that you actually possess six senses? The sixth is a muscular sense responsible for directing your muscles intelligently to the exact extent necessary for each action you perform．For example, when you reach for an object, the sensory nerv
- According to the selection, the muscular sense is responsible 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
