Unit 1 Great People Lesson One The Strange Echo/1 Lesson Two Alexander Fleming/7 Lesson Three Zheng He and Columbus/13 Unit 2 Nature and Science Lesson One Super Typhoon Mangkhut/20 Lesson Two How Light Travels/26 Lesson Three Alexander Bell’s Greatest Invention/32 Unit 3 Arts and Music Lesson One Warm and Cool Colors/39 Lesson Two How We Use Music to Manage Our Stress and Emotions/45 Lesson Three Aging Mona Lisa Worries Louvre/51 Unit 4 Fashion and Design Lesson One Barbie Doll/57 Lesson Two High Platform Shoes/63 Lesson Three Fashion and Style/69 Unit 5 Industry and Manufacturing Lesson One Population Movement/75 Lesson Two The Shenzhou 11 Spacecraft/81 Lesson Three Nuclear Industry/87 Unit 6 E-life Lesson One Computers/93 Lesson Two The Internet/99 Lesson Three The First Internet Worm/105 Unit 7 Occupations Lesson One Florence Nightingale/112 Lesson Two Driving and Brainpower/119 Lesson Three More Companies Want Employees to Work Less/125 Unit 8 Manners Lesson One Different Customs/132 Lesson Two A Father’s Love/138 Lesson Three With One Small Gesture/144