下列材料,既是晶体又是导体的是 [ ]
A. 塑料
B. 冰
C. 陶瓷
D. 铁
答案:D
---How far do they live apart?
--- I know, they live in the same neighborhood.
A.As long as
B.As well as
C.As far as
D.As soon as
右心衰竭引起淤血的器官是()
A.肺、肝
B.脑、肺
C.肺、脾
D.肝、脾
E.肾、肺