提示：点击单元就可进入课文学习：
- 课文目录与封面 .单元录音与听力文本
- Module 1 Amazing things
- Unit 1:Encyclopaedias
- Unit 2:Numbers
- Module 2 Science and technology
- Unit 3:Computers
- Unit 4:Inventions
- Module 3 Culture and history
- Unit 5:Educational exchanges
- Unit 6:Ancient stories
- Module 4 School life
- Unit 7:Memory
- Unit 8:English week
- Vocabulary