Unit 1 The Summer holidaysUnit 2 In the labUnit 3 American EnglishUnit 4 TravelUnit 5 Why do you do that?Unit 6 A new factoryUnit 7 Earthquakes期中考试试题Unit 9 ComputerUnit 10 SportsUnit 11 Country musicUnit 12 English programmesUnit 13 Abraham Lincoln期末考试试题参考答案