Unit 16
1．Words to learn 1
2．Structure 5
3．Listening comprehension 5
4．Close reading 6
Unit 17
1．Words to learn 11
2．Structure 14
3．Listening comprehension 15
4．Close reading 16
Unit 18
1．Words to learn 21
2．Structure 25
3．Listening comprehension 26
4．Close reading 27
Unit 19
1．Words to learn 32
2．Structure 38
3．Listening comprehension 39
4．Close reading 40
Unit 20
1．Words to learn 45
2．Structure 51
3．Listening comprehension 52
4．Close reading 53
Unit 21
1．Words to learn 59
2．Structure 63
3．Listening comprehension 64
4．Close reading 65
Unit 22
1．Words to learn 71
2．Structure 75
3．Listening comprehension 75
4．Close reading 77
Unit 23
1．Words to learn 82
2．Structure 87
3．Listening comprehension 87
4．Close reading 89
Unit 24
1．Words to learn 94
2．Structure 99
3．Listening comprehension 100
4．Close reading 101
Unit 25
1．Words to learn 106
2．Structure 111
3．Listening comprehension 112
4．Close reading 113
Unit 26
1．Words to learn 118
2．Structure 120
3．Listening comprehension 120
4．Close reading 122
Unit 27
1．Words to learn 127
2．Structure 130
3．Listening comprehension 130
4．Close reading 132
Unit 28
1．Words to learn 137
2．Structure 138
3．Listening comprehension 139
4．Close reading 140
Unit 29
1．Words to learn 146
2．Structure 148
3．Listening comprehension 149
4．Close reading 150
Unit 30
1．Words to learn 156
2．Structure 158
3．Listening comprehension 158
4．Close reading 160
参考答案 166