慢性肾炎治疗的目标是（）
A.消除蛋白尿
B.消除血尿
C.治疗贫血
D.消除管型尿
E.防止或延缓肾功能进行性减退
参考答案：E
-个数的8倍比50少8，求这个数．设这个数是x，列式为8x-8=50．______．
After 5 days, his food _____ and the boy who had left home had to return again. [ ]
A. gave up
B. gave off
C. gave in
D. gave out
