流脑病人出现呼吸衰竭，最常见的原因是（）
A.呼吸中枢炎症损伤
B.毒素对呼吸中枢的抑制作用
C.枕骨大孔疝
D.天幕裂孔疝
E.肺部感染
参考答案：C
按Black窝洞分类第Ⅳ类洞为（）
A.开始于窝沟的洞
B.后牙邻面洞
C.前牙邻面洞不包括切角
D.前牙邻面洞包括切角
E.牙齿唇、颊或舌面颈1／3的洞
Lucy Lily may go to the concert with you. Because they are not allowed to go out on school
nights. [ ]
A. Either, or
B. Neither, nor
C. Both, and
D. Not only, but also
