炉前燃油系统因检修需要动火时，运行人员应做好安全措施，必须办理动火工作票。

为了控制用户程序不能执行特权指令是通过设置 PSW 中的一个状态位来标志，这一位是______。

A．保护位

B．CPU 状态位

C．屏蔽位

D．条件位

已知工作A的紧后工作是B和C，工作B的最迟开始时间为第14天，最早开始时间为第10天；工作C最迟完成时间为第16天，最早完成时间为第14天；工作A的自由时差为第5天，则工作A的总时差为( )天。

A．3
B．5
C．7
D．9

第二节完形填空 (共20小题；每小题1分，满分２0分)

The train stopped and a girl got on. As I had become   36   by then, I could not tell what the girl looked like, but I could say she was a pretty girl.

“Are you going to Dehra Dun?” I asked her as the train   37  . Maybe my voice   38   her. She screamed in a low voice and said, “I don’t know anyone else here.” Well, it often    39  that people with good   40   fail to see what is right in front of them. “I didn’t see you either at first,” I said. “But I   41   you come in.” I wondered if I would be able to   42   her from discovering that I couldn’t see. I thought,   43   I kept to my seat, it shouldn’t be too difficult.

She was silent. Then I made a   44  . “What is it like outside?” I asked. She seemed to find something   45   in the question. Had she already noticed that I could not see? But her next question   46   my doubts. “Why don’t you look out of the window?” she asked quite   47  . I smiled, “You have an interesting face.” I thought it was a   48   remark as few girls could be tired of hearing that.

She laughed pleasantly. “It’s   49   to be told that,” she said. “But I’m so tired of people telling me that I have a   50   face.” Oh, so you did have a pretty face, thought I, and aloud I said, “Well, an interesting face   51   also be pretty.” “You are a good   52  ,” she said. “But why are you so serious?” Just then, the train   53   slowly into the next station, and the girl said goodbye to me.

“She was an interesting girl,” I said to a new   54   and then I asked him, “Did she keep her hair long or short?” “I don’t remember,” he replied, sounding   55  . “But she was completely blind. Didn’t you notice?”

36. A. sleepy  B. blind   C. hungry       D. dull

37. A. pulled out                  B. pulled in           C. left off                     D. sent out

38. A. annoyed      B. cheered      C. shocked      D. touched

39. A. appears B. turns   C. proves D. happens

40. A. intension     B. eyesight     C. power D. ability

41. A. watched       B. heard  C. observed    D. forgot

42. A. prevent B. cheat   C. protect       D. hold

43. A. unless   B. until   C. if        D. though

44. A. promise       B. plan    C. trick   D. mistake

45. A. interesting      B. difficult            C. strange           D. unfamiliar

46. A. removed         B. canceled         C. disappeared               D. added

47. A. simply                B. naturally        C. nervously     D. calmly

48. A. special  B. popular      C. safe    D. familiar

49. A. boring                B. fortunate    C. confusing      D. nice

50. A. pretty   B. common     C. similar       D. blind

51. A. must    B. should      C. can    D. shall

52. A. liar             B. talker  C. neighbor    D. passer-by

53. A. dragged       B. slipped       C. entered       D. drew

54. A. conductor     B. passenger           C. waiter         D. policeman

55. A. excited      B. disappointed        C. puzzled        D. indifferent

贯众具有的功效是（）

A.既能杀虫消积，又能行气利水

B.既能清热解毒，又能凉血止血，杀虫

C.既能杀虫，又能解暑

D.既能杀虫，又能疗癣

E.既能杀虫，又能止痛

软件测试是为了 【5】 而执行程序的过程。