Unit 1 Passage One 1
Passage Two 5
Unit 2 Passage One 10
Passage Two 15
Unit 3 Passage One 20
Passage Two 24
Unit 4 Passage One 28
Passage Two 32
Unit 5 Passage One 37
Passage Two 41
Unit 6 Passage One 45
Passage Two 50
Unit 7 Passage One 55
Passage Two 60
Unit 8 Passage One 64
Passage Two 69
Unit 9 Passage One 74
Passage Two 79
Unit 10 Passage One 84
Passage Two 89
Unit 11 Passage One 93
Passage Two 98
Unit 12 Passage One 102
Passage Two 107
附录 生词和词组 111