通读下面短文，掌其大意，然后在每小题所给的四个选项中，选出一个最佳答客，并将答题卡上对应题目所选的选项涂黑。
A wealthy man loved his son very much. As he wanted his son to lead a happy life, he decided to send him to see a wise old man for his advice on happiness.
When the old man learnt about his 46 , he handed the boy an empty bowl and said, “Go to the river miles away and 47 it with water. I will tell you about it 48 no water is split洒 when you reach here.” Although the boy was very surprised at this, he had no choice but to 49 this task.
The boy 50 on foot for the river and some time later came back with a bowl of water. The old man asked him “Did you notice the beautiful flowers along the road and the birds singing in the trees?” The boy could say nothing about them because he gave his 51 attention to the bowl in his hands.
The old man smiled and said, “Bring me 52 bowl of water, but this time enjoy the flowers and the singing of birds as well.”
When he returned, the boy was able to 53 everything he had seen to the old man. But when he looked down at his bowl, he found 54 that most water was gone. He forgot all about his bowl while enjoying the beautiful things along the road.
“Well, young man,” the old man said. “Enjoy the beauty of the world, but never forget the water in your bowl. This is the 55 of happiness.”
46. A. research B. promise C. purpose D. experience
47. A. wash B. fill C. compare D. connect
48. A. if B. until C. unless D. while
49. A. put out B. pick out C. point out D. carry out
50. A. set off B. paid off C. got off D. kept off
51. A. public B. weak C. quick D. full
52. A. any B. ever C. another D. the other
53. A. change B. imagine C. examine D. describe
54. A. lazily B. sadly C. luckily D. excitedly
55. A. result B. cause C. secret D. decision