前言 1
修订版前言 1
Unit 1 The Summer holidays 1
Unit 2 In the lab 13
Unit 3 American English 25
Unit 4 Travel 37
Unit 5 Why do you do that？ 52
Unit 6 A new factory 67
Unit 7 Earthquakes 83
Unit 8 Mainly revision 95
Unit 9 Computers 107
Unit 10 Sports 118
Unit 11 Country music 130
Unit 12 English programmes 143
Unit 13 Abraham Lincoln 154
Unit 14 Mainly revision 168
Unit 15 Healthy eating 183
Unit 16 Fire! 196
Unit 17 Nature 210
Unit 18 The necklace 225
Unit 19 Jobs 240
Unit 20 Mainly revision 252
Unit 21 Karl Marx 264
Unit 22 Britain and Ireland 276
Unit 23 Rescuing the temple 288
Unit 24 The science of farming 299
Unit 25 At the conference 310
Unit 26 Mainly revision 321
参考答案 331