Unit 15 What do people eat？ 1
Lesson 57 1
Lesson 58 5
Lesson 59 9
Lesson 60 12
单元过关直通车 16
Unit 16 What a good，kind girl！ 21
Lesson 61 21
Lesson 62 25
Lesson 63 29
Lesson 64 32
单元过关直通车 35
Unit 17 You mustbemore careful！ 41
Lesson 65 41
Lesson 66 44
Lesson 67 48
Lesson 68 52
单元过关直通车 55
Unit 18 Seeing the doctor 61
Lesson 69 61
Lesson 70 66
Lesson 71 73
Lesson 72 79
单元过关直通车 84
Unit 19 A visit to an island 91
Lesson 73 91
Lesson 74 96
Lesson 75 103
Lesson 76 108
单元过关直通车 114
Unit 20 Mainly revision 119
Lesson 77 119
Lesson 78 125
Lesson 79 131
Lesson 80 134
单元过关直通车 138
Unit 21 She taught herself 145
Lesson 81 145
Lesson 82 150
Lesson 83 158
Lesson 84 162
单元过关直通车 166
Unit 22 The sports meeting 171
Lesson 85 171
Lesson 86 175
Lesson 87 182
Lesson 88 187
单元过关直通车 191
Unit 23 A famous person 197
Lesson 89 197
Lesson 90 200
Lesson 91 205
Lesson 92 209
单元过关直通车 213
Unit 24 What were they doing？ 219
Lesson 93 219
Lesson 94 222
Lesson 95 228
Lesson 96 232
单元过关直通车 236
Unit 25 The accident 243
Lesson 97 243
Lesson 98 247
Lesson 99 254
Lesson 100 256
单元过关直通车 260
Unit 26 Mainly revision 267
Lesson 101 267
Lesson 102 270
Lesson 103 276
Lesson 104 280
单元过关直通车 283
单元过关直通车参考答案（Unit 15-Unit 26） 290