Technology

1. Satellites in Space天上的卫星都在忙些啥？

Environment

1. What Will Happen Without the Amazon Rainforest?没有亚马孙雨林世界会怎样？

Lifestyles

1. Youths Find a New Hobby—Balcony Gardening年轻人热衷阳台种菜
2. Posting “Original Photos”Reveals Privacy?晒“原图”会暴露隐私吗？

Facts

1. The Differences of Vision Between Humans and Dogs狗的视觉与人类的视觉有何区别

Learning and Exercises

1. Unit 1 Knowing me, knowing you
2. Unit 2 Making a difference
3. Unit 3 The world of science
4. Unit 4 Amazing art
5. Unit 5 What an adventure!
6. Unit 6 Disaster and hope
7. Keys