第二节完形填空（共15小题；每小题1分，满分15分）
阅读下面短文，掌握其大意，然后从36-50各题所给的四个选项（A、B、C和D）中，选出最佳选项。
Many years ago, I met with much difficulty with my life and work. I felt so  36 that I wanted to give up.
37  , a speech changed me. At the beginning of the speech, the well-known professor held up a $20 bill. In the room of 200 people, he asked, "Who would   38  this $20 bill?" 　　Hands started going up. He said, “I am going to give this $20 to one of you, but first, let me do this.” He crumpled(弄皱) the 20 dollar note up. He then asked, “Who still wants it?” Still the   39   were up in the air. “Well,” he replied, “what if I do this?” He   40   it onto the ground and started to grind(碾) it into the floor   41   his shoe. He   42   it up, now crumpled and dirty. “Now, who still wants it?” Still the hands went into the air. “My friends, you have all learned a very valuable  43  . No matter what I did to the money, you still wanted it because it stayed the same in   44  . It was still worth $20.”
　　“Many times in our lives, we are dropped, crumpled, and ground into the dirt by the decisions we   45   and the circumstances that come on our way. We   46   as if we are worthless; but no matter what happened or what will happen, you will   47  lose your value,” he went on,　　“Dirty or clean, crumpled or finely creased, you are still priceless to those   48   love you. The   49   of our lives comes, not in what we do or who we know, but by ...WHO WE ARE.” 　　“You are   50   — don’t ever forget it.”
36. A. optimistic     B. cheerful     C. pessimistic     D. worried
37. A. However     B. Therefore     C. Actually      D. Indeed
38. A. borrow         B. like         C. dream         D. have
39. A. hands        B. people      C. dollars        D. heads
40. A. brought       B. got         C. turned         D. dropped
41. A. through      B. with         C. under          D. in
42. A. broke        B. fed          C. picked         D. carried
43. A. advice       B. news         C. tip            D. lesson
44. A. value        B. note          C. quality        D. number
45. A. thought      B. impressed       C. took          D. made
46. A. find         B. feel           C. look         D. sound
47. A. never        B. ever          C. still          D. hardly
48. A. whom        B. which        C. who          D. whose
49. A. experience    B. pleasure       C. worth        D. difficulty
50. A. common      B. intelligent     C. reliable       D. special