Facts

1. How Do Astronauts Prepare for Space Travel?航天员升空前要经过哪些训练？
2. Why Do Ginkgo Tree Berries Stink?为什么银杏果是臭的?

Culture

1. Old Town of Lijiang丽江古城

Science

1. Certain Types of Music Could Help You Feel Less Pain某些类型的音乐可以帮助你减轻疼痛

Handy Tips

1. How to Survive on a Desert Island如何在荒岛上生存

Learning and Exercises

1. Unit 1 Face values
2. Unit 2 A life’s work
3. Unit 3 War and peace
4. Unit 4 A glimpse of the future
5. Unit 5 Learning from nature
6. Unit 6 Nature in words
7. Keys