问题 单项选择题

阵列处理机属于 (4) 计算机。

A.SISD

B.SIMD

C.MISD

D.MIMD

答案

参考答案:B

解析:[要点解析] 单指令流多数据流(SIMD)计算机通常由1个控制器、多个执行部件和多个存储器模块组成,其典型代表是并行处理机(阵列处理机)。
阵列处理机其工作原理是,将大量重复设置的处理单元互连构成阵列,在单一个控制部件的控制下,向各处理单元分配各自的数据,用以达到并行的执行同一条指令的目的。注意,各处理单元必须以同步方式在同一时间内执行相同的指令。
对于本试题的选项A,单指令流单数据流(SISD),其实质就是传统的顺序执行的单处理器计算机,其指令部件每次只对一条指令进行译码,并只对一个操作部件分配数据。
选项C“多指令流单数据流(MISD)”,其典型结构具有n个处理单元,按n条不同指令的要求对同一数据流及其中间结果进行不同的处理。一个处理单元的输出又作为另一个处理单元的输入。这类系统实际上很少见到。
选项D“多指令流多数据流(MIMD)”,是指能实现作业、任务、指令等各级全面并行的多机系统,其典型代表是多处理机。

完形填空

第二节:完形填空(共20小题。每小题1.5分,满分30分)

阅读下面短文,掌握其大意,然后从36-55各题所给的四个选项中,选出最佳答案。

Once I thought love meant flowers, gifts and sweet kisses. So, I really   36   whether there is love between my parents. Every day they are very busy   37   to earn money to pay the high schooling for me. They don't act in the   38   ways that I read in books or I see on TV, and sending flowers to each other on Valentine's Day is even   39  .

One day, my mother was sewing a quilt. I asked her if there was   40   between them. She paused her work and raised her head with   41  . Then she bowed her head and  42  sewing the quilt. I was very   43   because I thought I had hurt her. But after a few minutes she said, “Look at this thread. Sometimes it   44  ,but most of the time it disappears in the quilt. If life is a quilt, then love should be a thread. It can   45   be seen anywhere or anytime, but it's really there, and makes the quilt   46  ”. I listened carefully but I couldn't understand her   47   the next spring..

My mother suddenly got sick seriously and had to stay in the hospital for a one-month treatment. Every morning and dusk after she   48   from the hospital, my father   49   my mother walking slowly on the country road. There were many beautiful flowers, green grass and trees, and the sun gently glistened them   50   the leaves. All of these   51   the most beautiful picture in the world.   52   their eyes, I know they love each other deeply. From this experience, I   53   that love was just a   54   in the quilt of our life. Love is   55  , making life strong and warm.

36. A. believe               B. hesitate             C. doubt                         D. ignore

37. A. keeping                 B. trying               C. willing                 D. learning

38. A. romantic             B. magic               C. formal                        D. special

39. A. unsuitable           B. impolite            C. uneasy                        D. impossible

40. A. difference           B. love                  C. similarity            D. fight

41. A. surprise                 B. anger                C. smile                   D. calm

42. A. finished                 B. forgot               C. continued             D. considered

43. A. excited               B. worried             C. shocked                D. disappointed

44. A. exists                  B. works               C. breaks                  D. appears

45. A. easily                 B. hardly           C. simply                        D. usually

46. A. long-lasting         B. long-dated         C. long-suffering       D. long-winded

47. A. after                   B. before               C. until                    D. since

48. A. returned                 B. escaped             C. remained              D. heard

49. A. led                            B. let                   C. supported             D. helped

50. A. from                  B. through             C. across                  D. throughout

51. A. made up             B. made with         C. made into             D. made of

52. A. Seeing                B. Watching           C. Reading               D. Checking

53. A. expected             B. admitted            C. noticed                 D. realized

54. A. material                B. design                 C. color                       D. thread

55. A. everywhere         B. inside                C. anywhere             D. outside

多项选择题