视网膜脱离可分为（）
A.继发性
B.出血性
C.渗出性
D.裂孔性
E.牵拉性
参考答案：C, D, E
To their great relief, the missing child returned home,________, after an absence of two weeks. [ ]
A. felt tired and sound
B. tiring and soundly
C. feeling tired but soundly
D. tired but sound
可以用阴阳转化说明的是（）。
A.阳病治阳
B.阴中求阳
C.热极生寒
D.寒者热之
E.寒者热之
