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| What is it? | |
| 引用本文： | 邵莉勤.What is it?[J].语数外学习(初中版),2006(11). |
| 作者姓名： | 邵莉勤 |
| 作者单位： | 湖北生态工种职业技术学院 |
| 摘 要： | Yon can find it everywhere．Yon can touch it or feel it.But it can’t be eaten and can’t be drunk．There is air in it．There is water in it．Because it has much nutrition(营养物)which plants live on it,and we |
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