颅脑损伤中最严重的头皮损伤是（）。
A.头皮裂伤
B.头部擦伤
C.皮下血肿
D.帽状腱膜下血肿
E.头皮撕脱伤
参考答案：E
The manager refused to have his daughter in his department _____ showing favor to her. [ ]
A. in need of
B. because of
C. for fear of
D. regardless of
脊髓灰质炎的传染源是____________；主要传播途径为__________。
