What a pity! When we got to the cinema,the movie The Assembly          ,so we saw only the end of it.   [      ]

A. had just finished  

B. was finishing    

C. would finish      

D. just finished

时间片轮转法进行进程调度是为了______。

A．多个终端都能得到系统的及时响应

B．先来先服务

C．优先级较高的进程得到及时响应

D．需要CPU最短的进程先做