大学英语课程配套系列教材 大学英语精练 5PDF电子书下载

Unit 1 The Revolution in Education 1

Unit 2 The Significance of Human Life 30

Unit 3 Ads,Sales Promotion and Business 61

Unit 4 The Values of Hard Work and Ambition 89

Unit 5 Man's Never-ending Quest for the New 118

Unit 6 Hi-tech Crimes and the Age of Digitization 148

Unit 7 Viruses,Computer Viruses and Hackers 177

Unit 8 Conscience and Morality 205

Key to Exercises 232

Acknowledgements 248

后记 249