| 阅读理解四则(英文) |
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| 引用本文： | 刘向东.阅读理解四则(英文)[J].中学英语园地(高三版),2005(2). |
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| 作者姓名： | 刘向东 |
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| 作者单位： | 宁夏 |
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| 摘 要： | About Birds Birds are warm－blooded（温血）．This means that their body temper－ature（温度）always stays constant（恒定的）．Birds breathe with lungs．A bird's body is covered with feathers．All birds have two wings．Baby birds are hatched（孵化）from eggs．Birds can see very well．They can't move their eyeballs（眼球）like people do，so they have to turn their heads to look at something．Bird's ears are round holes on both sides of their heads．There are about９，０００kinds of birds in the world．All birds have ears．
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