Unit 1 The Summer holidays 1
Unit 2 In the lab 15
Unit 3 American English 29
Unit 4 Travel 42
Unit 5 Why do you do that? 56
Unit 6 A new factory 70
Unit 7 Earthquakes 83
Unit 8 Mainly revision 97
Unit 9 Computers 111
Unit 10 Sports 126
Unit 11 Country music 139
Unit 12 English programmes 152
Unit 13 Abraham Lincoln 165
Unit 14 Mainly revision 178
Unit 15 Healthy eating 192
Unit 16 Fire! 205
Unit 17 Nature 217
Unit 18 The necklace 230
Unit 19 Jobs 243
Unit 20 Mainly revision 257
Unit 21 Karl Marx 270
Unit 22 Britain and Ireland 283
Unit 23 Rescuing the temple 298
Unit 24 The science of faming 311
Unit 25 At the conference 324
Unit 26 Mainly revision 337
参考答案与精析 349