Facts

• How Do Astronauts Prepare for Space Travel?航天员升空前要经过哪些训练？

• Why Do Ginkgo Tree Berries Stink?为什么银杏果是臭的?

Culture

• Old Town of Lijiang丽江古城

Science

• 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

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

Learning and Exercises

• Unit 1 Face values

• Unit 2 A life’s work

• Unit 3 War and peace

• Unit 4 A glimpse of the future

• Unit 5 Learning from nature

• Unit 6 Nature in words

• Keys