I have read the material several times but it doesn't make any _____ to me. [ ]

A. meaning

B. importance

C. sense

D. significance

引起颈椎管狭窄的原因中，不包括（）

A.先天性椎弓根短小

B.椎间盘变性突出

C.关节突关节肥大

D.黄韧带肥厚

E.颈肌纤维组织炎