目录 1
Unit 11 1
Exercise 1 1
Exercise 2 3
Exercise 3 5
Exercise 4 6
Unit 12 12
Exercise 1 12
Exercise 2 13
Exercise 3 15
Exercise 4 17
Unit 13 23
Exercise 1 23
Exercise 2 25
Exercise 3 27
Exercise 4 29
Unit 14 34
Exercise 1 34
Exercise 2 35
Exercise 3 37
Exercise 4 40
Unit 15 46
Exercise 1 46
Exercise 2 48
Exercise 3 50
Exercise 4 52
Exercise 1 58
Unit 16 58
Exercise 2 59
Exercise 3 61
Exercise 4 63
Unit 17 70
Exercise 1 70
Exercise 2 71
Exercise 3 73
Exercise 4 75
Unit 18 82
Exercise 1 82
Exercise 2 84
Exercise 3 86
Exercise 4 88
Unit 19 95
Exercise 1 95
Exercise 2 96
Exercise 3 98
Exercise 4 101
Unit 20 108
Exercise 1 108
Exercise 2 109
Exercise 3 111
Exercise 4 113
期末模拟考试（A卷） 119
期末模拟考试（B卷） 126
参考答案（附听力材料） 134