Unit 1 Section I：Dialogues Section II：Oral Practice（1） Text：Travel Section III：Oral Practice（2） Passage：Independent Travel Section IV：Read with Correct Grammar Passage：Traveling by Bicycle Section V：More Practice Unit 2 Section I：Dialogues Section II：Oral Practice（1） Text：The Influence of Tourism Section III：Oral Practice（2） Passage：What is tourism？ Section IV：Read with Correct Grammar Passage：Tourism for VFR Section V：More Practice Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 Unit 9 Unit 10 Unit 11 Unit 12 Unit 13 Unit 14 Unit 15 Unit 16 Unit 17 Unit 18 Unit 19 Unit 20 Unit 21 Unit 22 Unit 23 Unit 24 Unit 25 Unit 26 Appendix I Appendix II
