动物发生肠炎时一般选用的补液药物是（）

A.大量高渗溶液

B.大量浓盐水

C.等渗糖盐水

D.低渗糖盐水

E.选A+C

The computer doesn't _____ until it is connected to other parts of the system.[ ]

A. come to life  

B. come to harm

C. come to light  

D. come to hand