Let's-Read-and-Find-Out: 自然科学启蒙: 为什么叶子会变色
- 32 stránok
- 2 hodiny čítania
谢维玲 Knihy
自然科学启蒙 / Let's-Read-and-Find-Out Science - 4: 你四周都是空气
- 33 stránok
- 2 hodiny čítania
Introduces the concept of air, its presence in our world, and its importance to the environment.