Unit1 The summer holidays 1
Unit2 In the lab 11
Unit3 American English 20
Unit4 Travel 31
Unit5 Why do you do that? 42
Unit6 A new factory 51
Unit7 Earthquakes 61
Unit8 Mainly revision 70
Unit9 Computers 79
Unit10 Sports 88
Unit11 Country music 96
Unit12 English programmes 104
Unit13 Abraham Lincoln 112
Unit14 Mainly revision 121
Unit15 Healthy eating 129
Unit16 Fire! 138
Unit17 Nature 147
Unit18 The necklace 156
Unit19 Jobs 165
Unit20 Mainly revision 175
Unit21 Karl Marx 185
Unit22 Britain and Ireland 194
Unit23 Rescuing the temple 203
Unit24 The science of farming 212
Unit25 At the conference 222
Unit26 Mainly revision 231
参考答案 240
听力专项训练（I） 248
听力专项训练（II） 250
听力专项训练（III） 252
听力专项训练（IV） 255
听力专项训练参考答案及听力材料 258