Unit 1 Passage One 1
Passage Two 5
Unit 2 Passage One 9
Passage Two 14
Unit 3 Passage One 17
Passage Two 21
Unit 4 Passage One 25
Passage Two 30
Unit 5 Passage One 34
Passage Two 39
Unit 6 Passage One 43
Passage Two 47
Unit 7 Passage One 51
Passage Two 55
Unit 8 Passage One 59
Passage Two 64
Unit 9 Passage One 68
Passage Two 72
Unit 10 Passage One 76
Passage Two 80
Unit 11 Passage One 83
Passage Two 87
Unit 12 Passage One 91
Passage Two 95
Unit 13 Passage One 100
Passage Two 104
附录 生词和词组 108