为了能区别各个不同的进程，记录各个进程执行时的情况，对每一个进程都设置一个______。
参考答案：进程控制块
47cm彩色电视机正常工作时流过的电流大约200______．
— I'm very tired these days because of studying for physics.
— Why not music? It can make you . [ ]
A. listen to; relaxing
B. to listen to; to relax
C. listening to; relaxed
D. listen to; relax
