Contents 1
Unit 15 Healthy eating 1
Part 1 Language Points 1
Part 2 Synchronous Test 22
Part 3 Explanation and Key 31
Unit 16 Fire! 35
Part 1 Language Points 35
Part 2 Synchronons Test 54
Part 3 Explanation and Key 64
Unit 17 Nature 68
Part 1 Language Points 68
Part 2 Synchronous Test 77
Part 3 Explanation and Key 86
Unit 18 The necklae 90
Part 1 Language Points 90
Part 2 Synchronous Test 103
Part 3 Explanation and Key 113
Unit 19 Jobs 117
Part 1 Language Points 117
Part 2 Synchronous Test 126
Part 3 Explanation and Key 136
Unit 20 Mainly revision 140
Part 1 Language Points 140
Part 2 Synchronous Test 150
Part 3 Explanation and Key 159
Unit 21 Karl Marx 163
Part 1 Language Points 163
Part 2 Synnchronous Test 171
Part 3 Explanatior and Key 180
Unit 22 Britain and Ireland 185
Part 1 Language Foints 185
Part 2 Synchronous Test 194
Part 3 Explanation and Key 203
Unit 23 Rescuing the temple 208
Part 1 Language Points 208
Part 2 Synchronous Test 221
Part 3 Explanation and Key 231
Unit 24 The science of farming 235
Part 1 Language Points 235
Part 2 Synchronous Test 244
Part 3 Explanation and Key 253
Unit 25 At the conference 258
Part 1 Language Points 258
Part 2 Synchronous Test 270
Part 3 Explanation and Key 279
Unit 26 Mainly revision 284
Part 1 Language Points 284
Part 2 Synchronous Test 289
Part 3 Explanation and Key 299