第二节, 完型填空 (共20 题,每小题1.5分, 共30分)

    Primitive (of the earliest times) man would, as the story goes, eat the hearts of animals he killed. He__36___ the heart of a lion to gain the lion’s___37___.

    ‘__38__’, you may say. Well, listen to this from __39__ science. Dr. Georges Ungar of Baylor University in Houston says that learned __40__ can be passed to other animals from the ones who __41__.

   Dr Ungar trained rats to like __42__ boxes better than dark boxes. __43__ did he do this to rats that usually like the dark? He __44__ any rats which went __45__ a dark area. After five to eight days the rats learned that a __46__ life could be lived in bright boxes. They got to __47__ the light.

    Then he __48__ the rats. He injected(注射) parts of their brains into 638 mice. These had shown they liked the dark. He put parts of the brains of untrained rats into 132 other mice. These mice __49__ liked the dark.

    __50__? Animals that got the trained brains spent 63 seconds in the dark __51__ animals that got the untrained brains spent 118 seconds in the dark. __52__ are very important. __53__ only one mouse out of 50,000 would choose the light __54__.

    Maybe eating the heart of a lion __55__ be a bad idea.

36. A. used to eat  B. had to  C. would eat  D. could eat

37. A. strength   B. energy  C. feeling  D. courage

38. A. Impossible  B. discouraging  C.Serious  D.Wonderful

39. A. the hope of  B. the world of  C. the search of  D. the role of

40. A. instructions  B. words   C. information  D. news

41. A. did the experiment  B. made a living  C. took the course  D. did the learning

42. A. lighted   B. burning   C. shining  D. clean

43. A. How    B. What    C. Why   D. When

44. A. fed    B. shocked   C. killed   D. praised

45. A. back   B. into     C.out of   D. around

46. A. longer   B. more peaceful  C. more terrible  D. more regular

47. A.fear    B. hate     C. love   D.learn

48. A. rewarded   B. killed    C. cured   D. treated

49. A. also    B. therefore   C.then    D. perhaps

50. A. Reason   B. Condition  C.Purpose  D. Result

51. A. however    B. so      C.when    D. and

52. A.The seconds   B. The figures  C. The brains  D.The experiments

53. A. Normally   B. Seemingly   C. Surprisingly  D. Strangely

54. A. on purpose   B. by chance   C. ever since   D. above all

55. A. can’t    B.mustn’t    C.might not   D. won’t

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