前言 Unit 1 First Day at Work Unit 2 Office Automation(Software) Unit 3 Office Routine Unit 4 Computer Graphics Unit 5 Communicate Online Unit 6 Surf the Network Unit 7 Selling Products Unit 8 With Customers Unit 9 Solutions Unit 10 Computer Security Unit 11 The Development Environment Unit 12 New Technology Grammar Appendix A: Glossary of Readings Appendix B: Key to Exercises