CONTENTS 目录 1
Unit 1
15.Healthy eating 1
16.Fire! 9
17.Nature 17
18.The necklace 25
19.Jobs 33
20.Mainly revision 41
21.Karl Marx 49
22.Britain and Ircland 57
23.Rescuing the temple 64
24.The science of farming 71
25.At the conference 78
26.Mainly revision 85
Keys 92