Unit 1 It's never too late! 1
Unit 2 Water,water,everywhere 23
Unit 3 Globalization 49
Unit 4 The World of learning 77
Unit 5 The social impact of television 103
Unit 6 Global warming 141
Unit 7 Joining the firm 173
Unit 8 Health matters 201
Unit 9 You and computers 227
Unit 10 Good science-and bad 253
Unit 11 Cultural Globalization 281
Unit 12 What does the future hold 307
Appendix Ⅰ:American and British English 336
Appendix Ⅱ:Irregular verbs 338
Appendix Ⅲ:Glossary 341