问题 单项选择题

内部存储器的机器指令,一般先读取数据到缓冲寄存器,然后再送到

A.指令寄存器

B.程序记数器

C.地址寄存器

D.标志寄存器

答案

参考答案:A

解析: 从内存中读取的机器指令进入到数据缓冲寄存器,然后经过内部数据总线进入到指令寄存器,再通过指令译码器得到是哪一条指令,最后通过控制部件产生相应的控制信号。

完形填空

Ted spent seven years as a prisoner of war. There he discovered the power of    1    . For more than half of that   2   he was in isolation (隔绝). He lived for ten months in total     3    . Those ten months was the longest of his life. When they   4   with wooden boards the window of his little seven-by-seven foot cell, shutting out the light, he    5    if he was going to make it.

Ted spent hours a day exercising and thinking. But at times he felt he could do   6   but scream. Not wanting to give his    7    the satisfaction of knowing they’d    8    him, he placed clothing into his mouth to lessen the noise    9    he screamed at the top of his lungs.

One day Ted got down on the    10   and crawled (爬) under his bed. He found a hole that   11   air from the outside. As he approached the hole, he saw a    12    ray of light. Ted put his eye next to the wall and discovered a small crack in the building. It allowed him to glimpse   13   , though all he could see was a     14    piece of grass. But when he saw this, he felt a surge of joy, excitement and   15    that he hadn’t had in years. “It represented life, growth and    16    ,” he later said. It was the small hope that helped Ted    17    this nearly unbearable experience.

The human spirit is   18    . It seems to run forever    19    nothing but a faint (微弱的) hope. Without it, you have nothing. With it, nothing else   20    — even the worst conditions.

1. A. thought             B. scream            C. support               D. hope

2. A. prison                B. war                 C. time                   D. month

3. A. happiness           B. sadness            C. darkness              D. silence

4. A. strengthened         B. fixed               C. covered               D. broke

5. A. reminded            B. required            C. wondered             D. feared

6. A. something         B. nothing            C. everything            D. anything

7. A. soldiers             B. friends             C. enemy               D. army

8. A. wounded           B. quitted             C. satisfied              D. broken

9. A. till                 B. since               C. as                  D. after

10. A. window            B. floor               C. wall                D. board

11. A. let in            B. put out              C. took in             D. gave off

12. A. weak               B. soft                  C. strong               D. sharp

13. A. inside             B. outside              C. above               D. below

14. A. very               B. right                 C. specific            D. single

15. A. gratefulness      B. usefulness           C. fulfillment          D. establishment

16. A. courage         B. perseverance          C. choice              D. freedom

17. A. by              B. out                   C. over                D. through

18. A. straight         B. strong               C. lucky                D. interesting

19. A. against              B. from                  C. on                   D. over

20. A. matters         B. relates               C. changes            D. happens

问答题 简答题