阅读下面短文,从短文后各题所给的 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。 On the last day of college before graduation, our professor walked up on stage to give us a final lesson, which she called "a life lesson on the 36 of mindsets (思维模式)As she _37 a glass of water over her head, everyone 38 her to mention the typical "glass half empty or glass half full" question. 39 . with a smile on her face, the professor asked, "How heavy is this glass of water I'm holding?" Students shouted out answers 40 from eight ounces (盎司)to a couple pounds. After a few moments of 41 answers, she replied, “In my opinion, the absolute weight of this glass doesn't 42 . It all 43 how long I hold it. If I hold it for a minute or two, it's 44 _ light. If I hold it for an hour 45 , my arm might feel painful. If I hold it for the whole day, my arm will feel completely numb, 46 me to drop the glass to the floor. In each 47 / the weight of the glass doesn't change, 48 the longer I hold it, the heavier it 49 to me." As the class nodded their heads in 50 , she continued, "Your worries, 51 . and stressful thoughts are like this glass of water. Think about them for a while and 52 happens. Think about them a bit longer and you begin to feel 53 . Think about them all day long, and you will feel completely numb, 54 to do anything else until you 55 them.” 36. A. origin B. trend C. standard D. power 37. A. picked B. laid C. raised D. pulled 38. A. urged B. begged C. expected D. advised 39. A. Instead B. Therefore C. Otherwise D. Anyway 40. A. coming B. ranging C. transforming D. judging 41. A. various B. visible C. quick D. short 42. A. concern B. matter C. care D. mean 43. A. refers to B. results in C. depends on D. mixes with 44. A. fairly B. exactly C. theoretically D. merely 45. A. only B. again C. later D. straight 46. A. permitting B. forcing C. encouraging D. reminding 47. A. section B. problem C. case D. field 48. A. so B. or C. for D. but 49. A. remains B. feels C. proves D. looks 50. A. agreement B. relief C. fear D. shock 51. A. happiness B. disappointment C. curiousness D. engagement 52. A. something B. everything C. anything D. nothing 53. A. pain B. terror C. sorrow D. doubt 54. A. unwilling B. unable C. unwise D. unlucky 55. A. destroy B. hide C. drop D. accept