At the transverse section , the spinal cord can be divided into which of the following parts.（ ）
A.central canal (中央管)
B.cortex
C.gray matter
D.medulla
E.white matter
正确答案是ACE
At the transverse section , the spinal cord can be divided into which of the following parts.（ ）
A.central canal (中央管)
B.cortex
C.gray matter
D.medulla
E.white matter
正确答案是ACE