Unit1 The summer holidays/ 1
Unit2 In the lab/ 21
Unit3 American English/ 39
Unit4 Travel/ 59
Unit5 Why do you do that?/ 77
Unit6 A new factory/ 95
Unit7 Earthquakes/ 114
Unit8 Mainly revision/ 132
期中测试/ 150
Unit9 Computers/ 162
Unit10 Sports/ 181
Unit11 Country music/ 199
Unit12 English programmes/ 217
Unit13 Abraham Lincoln/ 235
Unit14 Mainly revision/ 254
期末测试/ 273
参考答案 286