A

What makes a person a scientist? Does he have ways or tools of learning that are different from those of others? The answer is “no”. It is not the tools a scientist uses but how he uses these tools that makes him a scientist. You will probably agree that knowing how to use a power is important to a carpenter. You will probably agree, too, that knowing how to investigate(调查),how to discover information, is important to everyone. The scientist, however, goes one step further, he must be sure that he has a reasonable answer to his questions and that his answer can be confirmed by other persons. He also works to fit the answers he gets to many questions into a large set of ideas about how the world works. k+s-5#u 

The scientist’s knowledge must be exact. There is no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different, any changes the scientist observes in a demonstration must be explained by the changes in the conditions. This is one reason that investigations are important in science. Albert Einstein, who developed the theory of relativity, arrived at this theory through mathematics. The accuracy of his mathematics was later tested through investigations. Einstein’s ideas were shown to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations that may test his investigations.

51.What makes a scientist according to the passage? k+s-5#u 

A. The tools he uses.       B.  His ways of learning.

C.  The way he uses his tools.   D. The various tools he use

52.“The scientist, however, goes one step further,” the author says this to show    

A.    the importance of information  

B. the importance of thinking

C. the difference between scientists and ordinary people k+s-5#u 

D. the difference between carpenters and people with other jobs.

53. A sound scientific theory should be one that    .

A. does not only work under one set of conditions at one time, but also works under the same conditions at other times

B. leaves no room for improvement

C. does not allow any change even under different conditions k+s-5#u 

D. can be used for many purposes

54. What is the main idea of the passage?

A.  Scientists are different from ordinary people.

B.  The theory of relativity.

C. Exactness is the core(核心)of science.

D. Exactness and way of using tools are the keys to the making of a scientist.

  第二节:完形填空(共20小题;每小题1 分,满分20分)

A few years ago I was at an international conference with nearly 700 participants. One afternoon I_31  a very crowded talk by a famous author. The hall filled quickly and soon there were no  32   left , so many dozens of people were standing around the edges.

I saw a very elderly man, stooped(驼背的) slightly with age,   33   against the wall. I immediately got up, told those sitting beside me to   34   the place for him and made my way to him. When I offered my seat to him , he looked  35   and started to refuse , but I would have  36   of that. He asked me my name and thanked me deeply, and then made his  37   back into my row and sat comfortably. Many people who  38   our exchange turned to say what a kind thing I had done. I kept saying , “it’s nothing  39  . I m from Canada, it’s normal for us to help other people!” k+s-5#u 

A few minutes later, the man sitting next to the elderly man  40   to leave the hall for another talk and the elderly man  41   to me to return and sit beside him.  42   I resisted, thinking someone else might need it more, but people sitting around him started to repeat my  43 , asking me to come and sit! So I returned and sat beside the gentleman for the  44  .

when the talk was over ,the man thanked me again and  45   asked if I knew who he was . I had no idea. He then looked quite delighted and  46  me a household name that I recognized immediately! k+s-5#u 

I was astonished to have been sitting next to him,  47  he was excited to think I had given up my seat for him  48   knowing who he was! Again I had to tell him where I come from , and it’s the  49   thing to do! I have felt more blessed to be a Canadian since that day, for seeing how easy it is to  50  someone and how rare it seemed to so many people.

31. A. missed       B. gave      C. expected     D. attended k+s-5#u 

32. A. seats        B. rooms     C. topics       D. rows

33. A. turning       B. walking     C. leaning       D. lying

34. A. move       B. spare      C. take        D. hold

35. A. glad        B. satisfied     C. disappointed    D. surprised

36. A. nothing      B. none       C. something      D. anything

37. A. living       B. fortune      C. direction       D. way

38. A. witnessed     B. confirmed     C. remembered     D. experienced

39. A. easy        B. popular       C. special       D. funny

40. A. agreed       B. refused        C. chose       D. forgot

41. A. sent       B. signaled       C. rolled       D. said

42. A. At last      B. At least        C. At most      D. At first

43. A. action       B. name        C. dream       D. address k+s-5#u 

44. A. game       B. discussion      C. course       D. talk  

45. A. quietly      B. loudly.        C. proudly      D. angrily  

46. A. shared       B. told         C. asked       D. answered  

47. A. as if        B. even if       C. so         D .but  

48. A. by        B. without        C. through      D. after

49. A. strange      B. secret        C. normal       D. hard  

50. A. help        B. accept        C. praise       D. trust  

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