Unit 1 The summer holidays 1
Unit 2 In the lab 18
Unit 3 American English 33
Unit 4 Travel 50
Unit 5 Why do you do that？ 66
Unit 6 A new car factory 82
Unit 7 Earthquakes 99
Unit 8 Mainly revision 116
Unit 9 Computers 137
Unit 10 Sports 154
Unit 11 Country music 173
Unit 12 English programmes 187
Unit 13 Abraham Lincoln 203
Unit 14 Mainly revision 220
Unit 15 Healthy eating 242
Unit 16 Fire 257
Unit 17 Nature 272
Unit 18 The necklace 287
Unit 19 Jobs 302
Unit 20 Mainly revision 316
Unit 21 Karl Marx 334
Unit 22 Britain and Ireland 349
Unit 23 Rescuing the temple 363
Unit 24 The science of farming 377
Unit 25 At the conference 393
Unit 26 Mainly revision 407
参考答案 427