完形填空 (共20小题；每小题1.5分，满分30分)
阅读下面短文，从短文后各题所给的四个选项(A、B、C和D) 中，选出可以填入空白处的最佳选项。
Doing community service work, I spent three or four hours handing out warm dinner to the homeless out in the streets. After that I went to a   36   shelter not far from the Bay Bridge.
I was in high school and at the time my sister was too young to   37   . She wanted to help,    38  she made four or five dozen chocolate chip cookies for me to   39    and hand out to people. When getting to the homeless shelter I passed out the remaining meals. I had the containers with my   40  cookies in them and began to   41  , offering them to anyone near me.
I   42   an old gentleman and said, “Sir, would you like a cookie?” He stopped and turned around, looked at me   43   in the eye and said, “What did you say? Did you call me sir?” I told him I had, and his eyes   44   a little bit and he said, “No one has    45    called me sir.” He was completely taken aback.
It struck me. 
I explained I had been raised that   46   color and social status, everyone deserved    47   . It made me   48   to think that just because he was homeless, no one   49  him the honor. It broke my   50  , and I couldn’t help   51   cry. I just didn’t understand   52  no one ever called him sir? I had never thought that anyone was below me because I wasn’t raised that way. Every   53  person deserves to be treated with dignity. Years later, I still carry that memory and the   54  it taught me. Sometimes, what we take for granted can   55  make a difference in someone’s life.
How have you made a difference to others? How have others made a difference to you?
36. A. useless                              B. careless                 C. homeless                        D. hopeless
37. A. participate                 B. involve    C. choose                  D. go
38. A. however               B. but              C. yet                 D. so
39. A. bring                B. fetch            C. collect              D. take
40. A. classmate’s              B. schoolmate’s      C. sister’s                 D. family’s
41. A. walk around     B. knock around      C. come around                D. stand around
42. A. went                    B. came            C. approached            D. met
43. A. right                      B. even              C. still                  D. just
44. A. watered    B. cried               C. tore                 D. dropped
45. A. already              B. ever            C. still                 D. yet
46. A. in spite               B. regardless of      C. concerned about      D. for fear of
47. A. happiness                         B. truth                       C. respect                           D. help
48. A. strong-minded                B. sad                     C. frightened            D. pleased
49. A. handed                    B. afforded           C. provided              D. supplied
50. A. eyes                                   B. mind                       C. opinions                          D. heart
51. A. but                                      B. and                         C. until                                 D. or
52. A. what                B. when             C. whether              D. why
53. A. single                     B. poor            C. ordinary             D. normal
54. A. stories                               B. lessons                  C. experiences                   D. tears
55. A. equally                               B. hardly           C. really                               D. finally