Unit 1 The Summer holidays Unit 2 In the lab Unit 3 American English Unit 4 Travel Unit 5 Why do you do that? Unit 6 A new factory Unit 7 Earthquakes 期中考试试题 Unit 9 Computer Unit 10 Sports Unit 11 Country music Unit 12 English programmes Unit 13 Abraham Lincoln 期末考试试题 参考答案 · · · · · · (收起)