Tom is a student. He likes zoology（动物学）very much. Last term he thought he could do well in it in the final exam（期末考试）because he worked hard all the term. But when they had the exam, the teacher only took a birdcage（鸟笼）with a bird in it to the classroom. The birdcage was covered with（被……覆盖）a piece of cloth（布）. The students could only see the bird's legs and feet. The teacher said,“Please write down the bird's name. This is our exam.”

　　Tom was very angry because he didn't know the name of the bird. So he gave his paper to the teacher without writing his name. The teacher said to him,“What's your name, please?”Tom stood there, showed one of his legs to the teacher, and said,“Look! What's my name? Do you know?”

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John was ten years old, but he was still 21 Grade One. He liked 22 and didn’t work hard 23 his lessons. His parents always wanted him 24 a good boy. This afternoon John 25 back, he was very happy. He said to his parents. “Today our teacher praised(表扬) 26 .” Of course his parents were happy, too. They said, “Tell us about it.” “27 class she asked Tom 28 easier question, but he couldn’t answer. And I answered it at once.”

　 “What question”? “How much is one 29 one?”

　 “What did your teacher praised you?” asked his parents.

　 She said to Tom “You’re the most foolish(愚蠢)student in our class and John is 30 than you.”

( )21. A. at　　　 　　B. on　　　　　 C. in　　　　 D. with

( )22. A. playing　　 B. to play　　　 C. play　　　 D. is playing

( )23. A. in　　　　　 B. at　　　　　 C. for　　　　 D. with

( )24. A. to be　　　 B. be　　　　　 C. become　　 D. is

( )25. A. come　　　 B. are coming　　 C. comes　　　 D. came

( )26. A. I　　　　　 B. my　　　　　 C. me　　　　 D. mine

( )27. A. At　　　　　 B. In　　　　　 C. On　　　　 D. For

( )28. A. a　　　　　 B. an　　　　　 C. the　　　　 D. \

( )29. A. to　　　　　 B. and　　　　　 C. for　　　　 D. with

( )30. A. good　　　　 B. the best　　　 C. best　　　　 D. better