Some friends tried to settle the quarrel between Mr.and Mrs.Smith without hurting the feeling of______,but failed.

A．none

B．either

C．all

D．another

腰椎间盘脱出所致的坐骨神经痛可出现下列哪种阳性表现（）

A.克匿格征

B.戈登征

C.查多克征

D.拉塞克征

E.霍夫曼征