Because the two countries were  at _____ war, the people had ______ hard     

life.

A．/; the

B．the; the

C．/; a

D．a; a

引起中断的中断源有5种，分别为I/O中断，数据通道中断，时钟中断，程序中断和

A．存取越界中断

B．故障中断

C．奇偶校验错中断

D．数据溢出中断