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本试题来自人大附中单元练习试卷 （A） Jack is a famous writer now. But he said he was not a good student when he was young. He was often late for class and didnt like doing his homework. Sometimes he slept in class while the teacher was teaching. He didnt understand much, but he always thought he understood everything. One day the teacher asked the students a question, When John was ten years old, his brother was twenty. John is fifteen now and how old is his brother? Jack answered, Thats easy. His brother is twice as old as John, so he is now thirty. Another time, the teacher in a science class asked, When it thunders （打雷）, why do we always see the light before we hear the sound? But, Miss White, said Jack quickly, cant you see our eyes are in front of our ears? The third time, the teacher in a biology class asked, Why can fish swim in the water? But, Miss White, said Jack quickly. dont you know fish cant walk on land? （ ）1. Jack was not _______ when he was young. A. strong B. lazy C. clever D. well （ ）2. Jack didnt like to _______ when he was a student. A. write compositions B. do his homework C. do the housework D. learn scienceor biology （ ）3. How old is Jacks brother now when Jack is fifteen in the story? | 
