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最佳答案:As is encouraged to protecting the environment,Waste sorting is very necessary.I
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最佳答案:在世界环保日到来前夕,联合国教科文组织就如何处理垃圾问题向全世界中学生征文.请你以Saving Our City 为题,根据所给提示写一篇120词左右的短文.文
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最佳答案:My bookshelf has three layers,each layer from left to right stand it up.The lowe
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最佳答案:Nowadays,more and more people are in poor health.If we want to keep healthy we s