以 Why are trees important 写一篇英语作文
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以 Why are trees important 写一篇英语作文
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As we all konwn that the world becomes hotter now,one of the reason is that desertification and degeneration of the grassland is increasingly serious.So,the trees are more and more important than eve...
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我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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