脊髓由三层结缔组织被膜包囊，自外至内为硬脊膜，软脊膜及蛛网膜。
参考答案：对
Isn't it time you _____ his advice that you ______ your study plan? [ ]
A. follow, must change
B. should follow, will change
C. must follow; changed
D. followed; change
温脾汤的功用
A．攻下寒积，温补脾阳
B．温里散寒，通便止痛
C．攻逐寒积
D．温肾益精，润肠通便
E．温阳攻积，益气养血
