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- 4李大叔利用墙角围了一个养鸡场,篱笆长7.85m,这个养鸡场的占地面积是多少平方米?
- 5My teacher was busy yesterday(改为同义句) We went to the bookstore and bought some books last Frida
- 6一多边形,出一个内角外其余各角之和为1510,求边数和这个内角
- 7You can ask Wei Hua.I think she can ____ you.A.look after B.help C.answer D.know
- 8二氧化硫通入澄清石灰水中的现象是什么
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