下列哪一项不属于肾活检的指征（）
A.持续的血尿或蛋白尿
B.急进性肾炎
C.遗传性肾炎
D.多囊肾
E.原因不明的急、慢性肾功能不全
参考答案：D
课文填空。
1. This is the East. The wind often in the East.
2. In Summer, the sun always early and always late.
3. There are four in the school year.
4. They are always on then. They always go to the .
5. I like winter. That's the football .
6. You are often . Look at these !
7. Don't at Billy, Sandy!
隋唐时期实行的租庸调制，“庸”的作用是（）。
A.减轻了农民的徭役负担
B.减轻了农民的租税负担
C.保证了农民的生产时间
D.使农民获得了一定数量的土地
