题目

---Bob’s   the branches from the tree. Go and   for firewood. Bill!    ---Do you think I’m really     for his kind of work? A. cut away; cut it up; cut through  B. cut off; cut it down; cut out C. cut away; cut it up; cut out    D. cut off; cut it down; cut out 答案：C骨骼肌具有的特性是①兴奋性②传导性③收缩性④舒张性 [     ]A．①②③④B．②③④C．①②③D．①③④