Unit 1 Culture,History and Geography 1
Lesson 1 Homeschooling 1
Lesson 2 Florence Nightingale 10
Lesson 3 The Roof of the World 19
Unit 2 Sports 28
Lesson 4 One World,One Dream 28
Lesson 5 Soccer 39
Lesson 6 Badminton and Three Cups 48
Unit 3 The Internet 57
Lesson 7 The Internet 57
Lesson 8 Telecommuting 67
Lesson 9 Surfing Is Up and Grades Are Down 78
Unit 4 Science 89
Lesson 10 Environmental Protection 89
Lesson 11 Genetically-modified Food 98
Lesson 12 Nanometer 107
Unit 5 Economy 116
Lesson 13 The World Bank 116
Lesson 14 The Most Expensive Coin 126
Unit 6 Medicine and Health 135
Lesson 15 Hold Your Mouth 135
Lesson 16 To Conquer TB—A Long Way to Go 147
Vocabulary 159