—Jimmy isn't here. Where is he?

—He hurt his arm on the playground just now. He ______ to the school doctor's.[ ]

A. has gone            

B. has been      

C. goes

我国法律在处理因民事行为无效或者被撤销所引起的损失赔偿问题时，所采取的是（）。

A.债权原则

B.过失责任原则

C.强制性原则

D.等价有偿原则