三、完形填空（总计20小题，每小题1.5分）
It was a sunny day．A city man was driving along a country road with a new wagon（马车）and a beautiful pair of horses．He didn’t pay a lot of 36 to where he was going．Pretty soon he 37 that he was lost，but he 38 to drive， expecting to
refind his way or to 39 someone who could tell him how to get back to the 40．
It was a long 41 road．For many hours he kept on driving．When it was almost 42，he saw in a 43 a tall farmer ploughing the land． He stopped his 44 team of horses near the fence and called out，“Hello， farmer．”
“Hello，yourself，”the farme
r replied，45 ploughing．
“Where does the horse 46？”he asked without knowing his language errors（错误）．
“I haven’t seen it go anywhere．It 47 stays right where it is，”said the farmer，48 stopping his work．
“How far is it to the next town？” said the city man，speaking a little 49．
“Don’t know．I never 50 it，” replied the farmer． By this time the city man was getting 51．“What do you know？ You’re the biggest fool I 52 saw．”
53 stopping the farmer turned and looked for a long time 54 at the city man．Then he said，“Maybe I don’t know much．55 I am a fool． But at least I’m not lost！”
36. A. signs B. orders C. attention D. direction
37. A. realized B. recognized C. accepted D. received
38. A. stopped B. used C. wanted D. continued
39. A. miss B. meet C. look D. lose
40. A. town B. country C. capital D. village
41. A. lonely B. busy C. dirty D. crowded
42. A. at noon B. at night C. raining D. dark
43. A. truck B. pile C. field D. store
44. A. strong B. tired C. weak D. tiring
45. A. but B. went on C. stopped D. still
46. A. go B. lead up C. get D. show
47. A. always B. often C. sometimes D. seldom
48. A. began B. still C. without D. already
49. A. clearly B. lower C. more loudly D. more politely
50. A. judged B. measured C. saw D. studied
51. A. sad B. lovely C. friendly D. angry
52. A. ever B. often C. even D. never
53. A. Still B. Not C. With D. Finally
54. A. gladly B. immediately C. in silence 
D. excitedly
55. A. Really B. Perhaps C. Certainly D. Fortunately
的玻璃柱体，其横截而是圆心角为90o,、半径为R的扇形OAB、一束平行光平行于横截面，以45o入射角射到OA上，OB不透光，若考虑首次入射到圆弧AB上的光，则AB上有光透出的部分的弧长为
R
，γ=30°当光到界面AB时大于临界角，将发生全反射，此时可求得β=15°，故能够在AB上有光透出的部分夹角为α=45°，弧长为
，B正确。