Unit 1 Computer Briefing Session 1 Session 2 New Words and Expressions Language Focus Unit 2 Computer Selecting Session 1 Session 2 Session 3 New Words and Expressions Language Focus Unit 3 Software Installing Session 1 Session 2 Session 3 New Words and Expressions Language Focus Unit 4 Computer Assembling Session 1 Session 2 Session 3 New Words and Expressions Language Focus Unit 5 Computer Application Session 1 Session 2 New Words and Expressions Language Focus Unit 6 Computer Networking Session 1 Session 2 Session 3 New Words and Expressions Language Focus Unit 7 Introduction to Multimedia Session 1 Session 2 Session 3 New Words and Expressions Language Focus Unit 8 E-business:A Briefing Session 1 Session 2 Session 3 New Words and Expressions Language Focus Unit 9 Error Messages Session 1 Session 2 New Words and Expressions 附录1 参考译文 附录2 参考答案 附录3 单词表 附录4 世界著名计算机公司