Unit13 Albert Einstein 1
Lesson49 1
Lesson50 2
Lessons51-52 3
单元拔高训练 4
Unit14 Satellites 9
Lesson53 9
Lesson54 10
Lessons55-56 11
单元拔高训练 12
Unit14 A famous detective 17
Lesson57 17
Lesson58 18
Lessons59-60 19
单元拔高训练 20
Unit16 The sea 25
Lesson61 25
Lesson62 26
Lessons63-64 27
单元拔高训练 28
Unit17 Life in the furuer 33
Lesson65 33
Lesson66 34
Lessons67-68 35
单元拔高训练 36
Unit18 Mainly revision 41
Lesson69 41
Lesson70 42
Lessons71-72 42
单元拔高训练 43
Unit19 A freedom fighter 48
Lesson73 48
Lesson74 49
Lessons75-76 49
单元拔高训练 50
Unit20 Disability 55
Lesson77 55
Lesson78 56
Lessons79-80 56
单元拔高训练 58
Unit21 Music 62
Lesson81 62
Lesson82 63
Lessons83-84 63
单元拔高训练 64
Unit22 A tale of two cities 70
Lesson85 70
Lesson86 70
Lessons87-88 71
单元拔高训练 72
Unit23 Telephones 77
Lessons89-90 77
Lessons91-92 78
单元拔高训练 78
Unit24 Mainly revision 84
Lessons93-94 84
Lessons95-96 85
单元拔高训练 85
期中测试 91
期末测试 98
参考答案 106