A few years ago I was at an international conference with nearly 700 participants. One afternoon I_31  a very crowded talk by a famous author. The hall filled quickly and soon there were no  32   left , so many dozens of people were standing around the edges.
I saw a very elderly man, stooped(驼背的) slightly with age,  33   against the wall. I immediately got up, told those sitting beside me to  34   the place for him and made my way to him. When I offered my seat to him , he looked  35    and started to refuse , but I would have   36   of that. He asked me my name and thanked me deeply, and then made his  37   back into my row and sat comfortably. Many people who  38   our exchange turned to say what a kind thing I had done. I kept saying , “it’s nothing  39  . I m from Canada, it’s normal for us to help other people!” 
A few minutes later, the man sitting next to the elderly man  40   to leave the hall for another talk and the elderly man   41   to me to return and sit beside him.   42   I resisted, thinking someone else might need it more, but people sitting around him started to repeat my  43 , asking me to come and sit! So I returned and sat beside the gentleman for the  44  .
when the talk was over ,the man thanked me again and  45   asked if I knew who he was . I had no idea. He then looked quite delighted and  46  me a household name that I recognized immediately!
I was astonished to have been sitting next to him,  47  he was excited to think I had given up my seat for him  48   knowing who he was! Again I had to tell him where I come from , and it’s the  49   thing to do! I have felt more blessed to be a Canadian since that day, for seeing how easy it is to  50  someone and how rare it seemed to so many people.
31. A. missed            B. gave           C. expected         D. attended
32. A. seats             B. rooms         C. topics           D. rows
33. A. turning            B. walking        C. leaning          D. lying
34. A. move             B. spare          C. take             D. hold
35. A. glad             B. satisfied        C. disappointed       D. surprised
36. A. nothing           B. none          C. something        D. anything
37. A. living           B. fortune          C. direction          D. way
38. A. witnessed        B. confirmed         C. remembered        D. experienced
39. A. easy            B. popular           C. special           D. funny
40. A. agreed          B. refused            C. chose            D. forgot
41. A. sent             B. signaled            C. rolled             D. said
42. A. At last           B. At least            C. At most           D. At first
43. A. action            B. name             C. dream            D. address
44. A. game            B. discussion          C. course           D. talk  
45. A. quietly           B. loudly.              C. proudly           D. angrily  
46. A. shared            B. told                C. asked             D. answered  
47. A. as if              B. even if             C. so                D .but  
48. A. by               B. without              C. through           D. after
49. A. strange           B. secret               C. normal            D. hard  
50. A. help              B. accept              C. praise            D. trust