存储技术中，构建RAID5的最小磁盘配置是（）。 A.5 B.2 C.3 D.4

（14分）过氧化氢H₂O₂，（氧的化合价为－1价），俗名双氧水，医疗上利用它有杀菌消毒作用来清洗伤口。对于下列A~F涉及H₂O₂的反应，回答相关问题：

A．Na₂O₂ +2HCl= 2NaCl+H₂O₂   

B．Ag₂O+ H₂O₂=2Ag+O₂↑+ H₂O

C．2 H₂O₂="2" H₂O+O₂↑

D．3 H₂O₂+Cr₂(SO₄)₃+10KOH=2K₂CrO₄+3K₂SO₄+8 H₂O

E．H₂O₂+MnSO₄ = MnO₂ + H₂SO₄

F．    H₂O₂ +     Fe²⁺ +     H⁺  ="="     Fe³⁺  +     H₂O

（1）上述反应不属于氧化还原反应的是（填代号）_____________。

（2）H₂O₂仅体现还原性的反应是（填代号）                  。

（3）H₂O₂既体现氧化性又体现还原性的反应是（填代号）             。

（4）H₂O₂体现酸性的反应是（填代号）          。

（5）上述反应说明H₂O₂、Ag₂O、K₂CrO₄氧化性由强到弱的顺序是：                 。

（6）通过以上反应分析， H₂O₂常称为绿色氧化剂，原因是_______________________。

（7）请配平化学反应F，并画出电子转移情况。

H₂O₂ +     Fe²⁺ +     H⁺  ="="     Fe³⁺  +     H₂O

（8）由于H₂O₂有较强氧化性，能使某些有色试剂褪色，具有漂白作用，另外它还有弱酸性，某学生将H₂O₂溶液滴入含有酚酞的氢氧化钠溶液中，观察到溶液的红色消失。为了探究溶液褪色的原因，该学生提出了两种假设，然后又设计了一个简单的实验方案，以验证这两种假设。请回答：

(A)该学生提出的两种假设是：

假设①___________________________________________；

假设②   _________________________________      。

(B)将该学生设计的简单实验方案、预测的实验现象及结论填入下表(结论部分只需填①或②)：

下列哪种偏倚属于选择偏倚（）。

A.奈曼偏倚

B.回忆偏倚

C.检出征候偏倚

D.暴露怀疑偏倚

E.就诊机会偏倚

Quincke征是指（）

A.明显颈动脉搏动

B.毛细血管搏动征

C.枪击音

D.动脉双重杂音

E.点头运动

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

食入被大量的蜡样芽孢杆菌污染的食物，可导致（）。

A.假膜性肠炎

B.阿米巴痢疾

C.中毒性痢疾

D.出血性大肠炎

E.食物中毒