Unit 1 Niagara Falls
Unit 2 Health
Unit 3 Wht's Your Favorite Sport?
Unit 4 Olympic Games
Unit 5 Airport Facilities
Unit 6 Hotel
综合练习一
Unit 7 Popular Culture
Unit 8 Clothing
Unit 9 Famous People
Unit 10 Western Festivals
Unit 11 Our World-the Environment
Unit 12 Water Supply
综合练习二
综合练习三
模拟试题
附录A 参考答案