总序 前言 Unit 1 Introduction to Tourism Unit 2 Vacation Planning Unit 3 Travel Agency Unit 4 Hotel Operator Unit 5 Cruise Tour Unit 6 Transportation Unit 7 Business Trip Unit 8 Winter Tourism Unit 9 City Tour Unit 10 Tourism Attraction Unit 11 Outdoor Activity Unit 12 Ecotourism Unit 13 Heritage Tourism Unit 14 Event Tourism Unit 15 Tourism and China Unit 16 Tourism Developing Trends