A.15%~20% B.25%~30% C.30%~50% D.60%~70% E.70%~90%
A.10歲 B.20歲 C.30歲 D.40歲 E.50歲
A.脊髓 B.小腦 C.大腦 D.腦干、小腦 E.橄欖核、腦橋