Unit 1 Web Life Today（第1单元 今天的网络生活） 1
Lesson 1 Diversifying Your Web Life in One Place 2
Lesson 2 WWWW—Woven Deep into Our Lives 7
Lesson 3 The Web Lifestyle 13
Lesson 4 Prospects of the Web 18
Unit 2 WWW and Web Technology（第2单元 万维网和网络技术） 22
Lesson 5 World Wide Web 23
Lesson 6 HoW the Internet Works 28
Lesson 7 Waves from Space 34
Lesson 8 Marketing on the Internet 38
Unit 3 Information Technology（第3单元 信息技术） 43
Lesson 9 Information Technology 44
Lesson 10 Speeding on the Data Highway 47
Lesson 11 Catching the Third Wave 50
Lesson 12 China's Reform and Information Technology Industry 54
Unit 4 Computer Science and Technology（第4单元 计算机科学和技术） 59
Lesson 13 End of the PC Era 60
Lesson 14 Bill Gates'Speech to Tsinghua University 64
Lesson 15 The Next Revolution in Computers 70
Lesson 16 Virtual Reality Technology 77
Unit 5 Green Revolution（第5单元 绿色革命） 84
Lesson 17 Green Revolution——Clean Cars and Energy 85
Lesson 18 Alternative Energy Sources——Solar and Wind Power 91
Lesson 19 The Trouble with Biofuels 95
Lesson 20 The Next Green Revolution:GMOs 100
Unit 6 Biotechnology and Cloning（第6单元 生物工程和克隆） 105
Lesson 21 The Biotech Century 106
Lesson 22 What Are Biorhythms？ 111
Lesson 23 The Age of Cloning 115
Lesson 24 Scientific Researches on Body's Rhythms 122
Unit 7 Robots（第7单元 机器人） 126
Lesson 25 Robot Wars:The Rise of Artificial Intelligence 127
Lesson 26 Robot Scientist"Adam"Solves Genetic Problems 133
Lesson 27 Robots of the Future 138
Unit 8 Application of Electronic Technology（第8单元 电子技术应用） 144
Lesson 28 A Brave New Olfactory World——Applications for Electronic Noses 145
Lesson 29 Digital Storage Oscilloscopes 150
Lesson 30 E-mail Phones 156
Unit 9 Environmental Protection and Pollution Treatment（第9单元 环境保护和污染处理） 162
Lesson 31 Environmental Protection and Pollution Treatment 163
Lesson 32 A Clean World or a Polluted World？ 168
Lesson 33 Good Effects of El Nino 173
Unit 10 Space Station and Space Technology（第10单元 太空站和空间技术） 177
Lesson 34 The International Space Station 178
Lesson 35 A New Concept for Spacecraft Tiles 183
Lesson 36 Space Travel in the Future 187
Unit 11 Nanotechnology（第11单元 纳米技术） 192
Lesson 37 Nanotechnology 193
Lesson 38 A New Treatment for Cancer Nanoparticles 199
Unit 12 Scientific Theory and Scientific Research（第12单元 科学理论和科学研究） 204
Lesson 39 What Is a Scientific Theory？ 205
Lesson 40 New Findings from the Latest Scientific Research 210
Practice Exercises 216
Practice Exercise 1 216
Practice Exercise 2 225
Practice Exercise 3 235
Practice Exercise 4 245
Practice Exercise 5 255
Key to Practice Exercises 265