- 第一讲 Lesson One Walking in Space
- 第二讲 Lesson One Walking in Space
- 第三讲 Lesson One Walking in Space
- 第四讲 Lesson One Walking in Space
- 第五讲 Lesson One Walking in Space
- 第六讲 Lesson Two Education
- 第七讲 Lesson Two Education
- 第八讲 Lesson Two Education
- 第九讲 Lesson Two Education
- 第十讲 Lesson Three Air Pollution
- 第十二讲 Lesson Four Petroleum
- 第十三讲 Lesson Four Petroleum
- 第十四讲 Lesson Four Petroleum
- 第十讲 Lesson Twelve
- 第十一讲 Lesson Twelve
- 第十九讲 Lesson Fifteen
- 第二十讲 Lesson Fifteen