Unit 1 Focus on Canada 1
Scheme of work 2
Introduction：To the student 5
Unit 2 New York 17
Unit 3 The world of business 31
Unit 4 Harvesting the sea 45
Unit 5 Science fiction 59
Unit 6 Computers 73
Unit 7 Relationships 87
Unit 8 Women at work 101
Unit 9 Dilemmas 115
Unit 10 Energy sources 129
Unit 11 Money matters 143
Unit 12 The world of machines 157
AppendixⅠ：lnformation technology：a glossary 171
AppendixⅡ：Glossary 174