开口绞锁

阿片类药物是治疗术后急性疼痛最常用，最有效的药物。其最危险的不良反应是________，必要时采用________进行对抗。

第二节完形填空(共20小题；每小题l.5分，共30分)

阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。

I met Mrs. Neidl in the ninth grade on a stage-design team for a play and she was one of the directors. Almost instantly I loved her. She had an Unpleasant voice and a direct way of speaking,   36   she was encouraging and inspiring. For some reason, she was impressed with my work and me.

Mrs. Neidl would ask me for my   37  . She wanted to know how I thought we should   38   things. At first I had no idea how to answer because I knew   39   about stage design! But I slowly began to respond to her   40  . It was cause and effect: She believed I had opinions, so I began to   41   them. She trusted me to complete things, so I completed them perfectly. She loved how   42   I was, so I began to show up to paint more and more. She believed in me, so I began to believe in myself.

Mrs. Neidl's   43  that year was, "Try it. We can always paint over it   44  !"I began to take   45  . I had been so afraid of failing but suddenly there was no failing--only things to be   46   upon. I learned to dip my brush into the paint and   47   create something.

The shy, quiet freshman achieved success that year. I was   48   in the program

as "Student Art Assistant" because of the time and effort I'd put in. It was that year that I   49   I wanted to spend the rest of my life doing stage design.

Being on that stage-design team   50   Mrs. Neidl changed me completely. Not only was I stronger and more competent than I had thought, but I also   51   a strong interest and a world I hadn't known existed. She taught me not to   52   what people think I should do: She taught me to take chances and not be   53  . Mrs. Neidl was my comforter when I was upset. Her   54   in me has inspired me to do things that I never imagined   55  .

36. A. and           B. yet            C. so             D. for

37. A. opinion       B. impression     C. information     D. intention

38. A. make         B. keep           C. handle         D. change

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

40. A. questions      B. comments      C. explanations    D. remarks

41. A. hold          B. follow         C. evaluate        D. form

42. A. happy         B. lively          C. reliable        D. punctual

43. A. message       B. motto          C. saying         D. suggestion

44. A. again         B. more          C. instead         D. later

45. A. steps          B. control         C. charge         D. risks

46. A. improved      B. acted          C. looked         D. reflected

47. A. easily         B. carefully       C. confidently     D. proudly

48. A. introduced    B. recognized     C. identified      D. considered

49. A. confirmed     B. decided        C. realized        D. acknowledged

50. A. with          B. below         C. of             D. by

51. A. developed     B. discovered     C. took           D. fostered

52. A. accept        B. care           C. judge          D. wonder

53. A. bored         B. lazy           C. sad            D. afraid

54. A. trust          B. patience       C. curiosity       Do interest

55. A. accessible     B. enjoyable      C. possible        D. favorable

某同学拟用氯化钙固体、碳酸钠溶液和稀硝酸等试剂，先制得碳酸钙，最终制得纯净的硝酸钙晶体．

（1）请帮助该同学完成下列实验操作步骤：

①用蒸馏水完全溶解CaCl₂固体后，加入 溶液；

②将反应后的混合物过滤，并用适量蒸馏水洗涤沉淀；

③将沉淀加入 中，使之完全溶解

④用 的方法（用“有机物萃取”或“蒸发结晶”），得到纯净的硝酸钙晶体．

（2）该过程涉及2个化学反应，请写出这两个反应的离子方程式： 、 ．

CT机将X射线锥形射束转化为扇形射束的部件是()

A．滤过器 

B．准直器 

C．窗口 

D．探测器 

E．定位系统

会计工作岗位可以（）。

A.一人多岗

B.一岗多人

C.一人一岗

D.多岗多人