Unit 1 1
Unit 2 7
Unit 3 15
Unit 4 22
Unit 5 29
Unit 6 35
Unit 7 43
Unit 8 50
Unit 9 57
Unit 10 62
Unit 11 67
Unit 12 73
Unit 13 80
Unit 14 88
Unit 15 96
Unit 16 105
Unit 17 112
Unit 18 119
Unit 19 125
Unit 20 132
Key to Exercises of Book Two 139
Original Materials of Listening and Speaking in Book Two 158
Chinese Translation of the Texts in Book One 172
Key to Exercises of Book One 186
Key to Exercises of Reading and Writing in Book One 213