Unit 1 The Revolution in Education Unit 2 The Significance of Human Life Unit 3 Ads, Sales Promotion and Business Unit 4 The Values of Hard Work and Ambition Unit 5 Man's Never-ending Quest for the New Unit 6 Hi-tech Crimes and the Age of Digitization Unit 7 Viruses, Computer Viruses and Hackers Unit 8 Conscience and Morality Key to Exercises Acknowledgements 后記