Unit 21 Radio Programs （Ⅰ） 1
Lesson 41 1
Lesson 42 6
Unit 22 Radio Programs （Ⅱ） 11
Lesson 43 11
Lesson 44 16
Unit 23 Radio Programs （Ⅲ） 21
Lesson 45 21
Lesson 46 26
Unit 24 Radio Programs （Ⅳ） 31
Lesson 47 31
Lesson 48 36
Unit 25 Radio Programs （Ⅴ） 41
Lesson 49 41
Lesson 50 46
Unit 26 Travelling （Ⅰ） 51
Lesson 51 51
Lesson 52 56
Unit 27 Travelling （Ⅱ） 61
Lesson 53 61
Lesson 54 67
Unit 28 Transportation 73
Lesson 55 73
Lesson 56 78
Unit 29 Traffic Accidents 83
Lesson 57 83
Lesson 58 88
Unit 30 Story 93
Lesson 59 93
Lesson 60 97
Unit 31 Holidays and Festivals （Ⅰ） 102
Lesson 61 102
Lesson 62 107
Unit 32 Holidays and Festivals （Ⅱ） 112
Lesson 63 112
Lesson 64 117
Unit 33 Tourist Attraction 122
Lesson 65 122
Lesson 66 128
Unit 34 Nature （Ⅰ）Animal World 133
Lesson 67 133
Lesson 68 138
Unit 35 Nature （Ⅱ）Animal World 143
Lesson 69 143
Lesson 70 149
Unit 36 Nature（Ⅲ）Disasters 154
Lesson 71 154
Lesson 72 159
Unit 37 Nature（Ⅳ）Weather 164
Lesson 73 164
Lesson 74 169
Unit 38 Nature（Ⅴ）Weather 174
Lesson 75 174
Lesson 76 179
Unit 39 Story 185
Lesson 77 185
Lesson 78 189
Unit 40 Film Extracts 194
Lesson 79 194
Lesson 80 197