完形填空（共20小题；每小题1分，满分20分）
阅读下面短文，从短文后所给各题的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。
I recently heard a story about a famous scientist who had made several very important medical breakthroughs. He was being interviewed by a reporter who asked him 36 he thought he was able to be so much more 37 than the average person.
He 38 that it all came from a(n) 39 with his mother that occurred when he was about 2. He had been trying to remove milk from the fridge when he 40 the slippery(光滑的) bottle, its contents running all over the kitchen floor.
When his mother came in, 41 shouting at him or giving him a lecture, she said, "Robert, what a great and wonderful 42 you have made! I have 43 seen such a huge pool of milk. Well, the damage has already been 44 . Would you like to get down and 45 in the milk for a few minutes before we clean it up?"
Indeed, he did. After a few minutes, his mother said, "Robert, whenever you make a mess like this, eventually you have to 46 everything to its proper order. So, how would you like to do that? We could use a sponge(海绵), a towel or a mop. Which do you prefer?" He chose the sponge.
His mother then said, "You know, what we have here is a 47 experiment in how to effectively carry a big milk bottle with two 48 hands. Let's go out in the back yard and fill the bottle with water and see if you can make it." The little boy learned that if he 49 the bottle at the top near the lip with both hands, he could carry it without dropping it. What a wonderful 50 !
This scientist then remarked that it was at that moment that he knew he didn't need to be 51 to make mistakes. Instead, he learned that mistakes were just 52 for learning something new, which is, 53 , what scientific experiments are all about. Even if the experiment "doesn't 54 ," we usually learn something 55 from it.
36. A. why B. what C. when D. how
37. A. capable B. able C. creative D. original
38. A. responded B. reacted C. recalled D. reminded
39. A. coincidence B. experience C. incident D. conflict
40. A. fell B. lost C. escaped D. dropped
41. A. rather than B. instead of C. other than D. in place of
42. A. picture B. mass C. map D. mess
43. A. rarely B. happily C. frequently D. angrily
44. A. obtained B. suffered C. done D. received
45. A. jump B. play C. enjoy D. draw
46. A. recover B. return C. restore D. regain
47. A. failed B. successful C. fantastic D. painful
48. A. strong B. tiny C. thin D. weak
49. A. controlled B. possessed C. seized D. grasped
50. A. example B. teaching C. lesson D. instruction
51. A. anxious B. nervous C. fearful D. afraid
52. A. situations B. opportunities C. occasions D. turns
53. A. after all B. above all C. first of all D. in all
54. A. do B. finish C. go D. work
55. A. worthy B. costly C. valuable D. interesting
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