致用英语听力教程4

Unit 1　Business
Unit 2　Marketing.
Unit 3　IntemationalTrade
Unit 4　Etiquette
Unit 5　Banking
Unit 6　Stocks
Unit 7　Convention and Exhibition
Unit 8　Insurance
Unit 9　Environment
Unit 10　Library
Unit 11　Tourism
Unit 12　Guiding
Unit 13　VirtualCommunity
Unit 14　TeachersandStudents
Unit 15　WorkingTbroughCollege
Unit 16　TheLastLecture
Extensive Listening