《素问·痿论》认为"痿躄"的主要病机是（）
A.宗筋弛纵
B.骨枯髓虚
C.胞络阻绝
D.肺热叶焦
E.肌肉濡渍
参考答案：D
— Have you got any particular plans for the coming holiday?
— Yes. _____, I'm going to visit some homes for the old in the city.[ ]
A. If ever
B. If busy
C. If anything
D. If possible
组织学习经验的内涵
