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| 动物世界 | |
| 摘 要： | Hippos live inAfrica, They spend the day keeping cool in the lakes and rivers. They leave the water at night to eat grasses and plants. Although they are very big and heavy, they are good swimmers. |
| 关 键 词： | 小学 英语 课外阅读 阅读材料 |
| 本文献已被 维普 等数据库收录！ | |