- Unit 1 Spring Is Coming！
- Unit 2 Plant a Plant！
- Unit 3 Animals Are Our Friends
- Unit 4 The Internet Connects Us
- Unit 5 Buying and Selling
- Unit 6 Be a Champion!
- Unit 7 Know Our World
- Unit 8 Save Our World
- Lesson 43：Let
- Lesson 44：Environment Clubs
- Lesson 45：Let
- Lesson 46：Protect Our Environment
- Lesson 47：Connected to Nature
- Lesson 48：Garbage Is Interesting!
- Unit Review
版本：
很抱歉，暂时没有该知识点下的试题，等待我们的收集吧o(╥﹏╥)o