肾小球肾炎肾功能损害的早期指征（）

A.内生肌酐清除率

B.尿素氮升高

C.血肌酐升高

D.β-微球蛋白明显增高

E.以上都是

They were surrounded by the enemy, but they________at last from the village. [ ]

A. managed escaping  

B. tried to escape

C. managed to escape  

D. tried escaping