Unit15 Healthy eating 1
Lesson57 1
Lesson58 2
Lessons59-60 3
单元拔高训练 4
Unit16 Fire! 9
Lesson61 9
Lesson62 10
Lessons63-64 11
单元拔高训练 11
Unit17 Nature 16
Lesson65 16
Lesson66 17
单元拔高训练 18
Lessons67-68 18
Unit18 The necklace 23
Lesson69 23
Lesson70 24
Lessons71-72 25
单元拔高训练 26
Unit19 Jobs 31
Lesson73 31
Lesson74 32
Lessons75-76 33
单元拔高训练 34
Unit20 Mainly revision 39
Lesson77 39
Lesson78 40
Lessons79-80 41
单元拔高训练 42
Lesson81 46
Unit21 Karl Marx 46
Lesson82 47
Lessons83-84 48
单元拔高训练 49
Unit22 Britain and Ireland 54
Lesson85 54
Lesson86 55
Lessons87-88 55
单元拔高训练 56
Unit23 Rescuing the temple 62
Lesson89 62
Lesson90 63
Lessons91-92 64
单元拔高训练 64
Lesson94 69
Lesson93 69
Unit24 The science of farming 69
Lessons95-96 70
单元拔高训练 71
Unit25 At the conference 76
Lesson97 76
Lesson98 77
Lessons99-100 77
单元拔高训练 78
Unit26 Mainly revision 83
Lesson101 83
Lesson102 84
Lessons103-104 84
单元拔高训练 85
期中测试 90
期末测试 97
参考答案 105