"Be a Friend to Trees (Let's-Read-and-Find-Out, Stage 2)"
"Why should you be a friend to trees?Trees are a valuable natural resource. People depend on trees for food, and animals depend on trees for food and shelter. But most important, we depend on trees because they add oxygen, a gas we all need, to the air. While trees give us many wonderful produc...
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| 主要作者: | |
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| 格式: | 图书 |
| 语言: | Undetermined |
| 出版: |
HarperCollins
1994
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| 版: | Revised |
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