通读下面短文，掌握其大意，然后在各题所给的四个选项（A、B、C和D）中选出一个最佳选项。
"What worries you, Tom?" asked Mrs. Bell. He had a1in his hand and tears (泪水) in his eyes.
"Our teacher asked us to recite (背诵) the poem 'Little Jim'. The student who can recite it2will get a prize. But I don't think I can do it well." said Tom.
"Why not?" asked Mrs. Bell.
"The boys say that I can't," said Tom in a3voice.
"Don't mind what they4. Let them see that you can do it," said Mrs. Bell.
"But I don't think I can," said Tom. "The poem is so long and difficult. I may not try5 the prize, but I want to try my best to recite it, because the boys laugh at me. They call me 'Slow Tom'."
"Well, dear," said Mrs. Bell, "Look at that snail on the wall. How slow it is! Watch it. You will see it will get to the top at last. So just try a few lines each day, and you may6the prize in the end."
Tom thought that though he could not catch up with they boys, he might run a race with the 7. So he decided to try it.
At last, the day came. The teacher called up the boys to recite the poem. After five or six boys had recited it, it was Tom's8. Most of the boys laughed at him because they thought he could9. But to their surprise, Tom did not10miss a word. His heart was full of joy when the teacher said, "Well done, Tom!" After the rest of the class had tried, the teacher said Tom had done best and he gave Tom the11.
"And now tell us12you could recite the poem so well," said the teacher.
"A snail on the wall taught me how to do it," said Tom.
There was a loud13when Tom said this. But the teacher said, "Don't laugh! We can learn a lot from things such as snails. How did the snail teach you, Tom?"
"I saw it crawl up the wall bit by bit. It did not stop, but went on and on. And I thought I could do the same. So I recited it bit by bit, and did not14."said Tom.
"Well done, Tom!" said the teacher. "Now boys, let us give a good cheer for Tom and the snail on the wall." The classroom rang with a great15. Everyone was glad that "Slow Tom" won the prize at last.
