Unit One 44
Passages 1～4 44
Answer Key 55
Explanatory Answers 55
Translations for Reference 57
Unit Two 59
Passages 1～4 59
Explanatory Answers 69
Answer Key 69
Translations for Reference 71
Unit Three 73
Passages 1～4 73
Answer Key 83
Explanatory Answers 83
Translations for Reference 85
Unit Four 87
Passages 1～4 87
Explanatory Answers 96
Answer Key 96
Translations for Reference 98
Unit Five 100
Passages 1～4 100
Answer Key 110
Explanatory Answers 110
Translations for Reference 112
Unit Six 113
Passages 1～4 113
Explanatory Answers 123
Answer Key 123
Translations for Reference 125
Unit Seven 127
Passages 1～4 127
Answer Key 137
Explanatory Answers 137
Translations for Reference 139
Unit Eight 141
Passages 1～4 141
Answer Key 150
Explanatory Answers 151
Translations for Reference 153
Unit Nine 154
Passages 1～4 154
Answer Key 164
Explanatory Answers 164
Translations for Reference 166
Unit Ten 168
Passages 1～4 168
Explanatory Answers 179
Answer Key 179
Translations for Reference 180
Unit Eleven 182
Passages 1～4 182
Answer Key 192
Explanatory Answers 192
Translations for Reference 194
Unit Twelve 197
Passages 1～4 197
Explanatory Answers 207
Answer Key 207
Translations for Reference 209
Unit Thirteen 211
Passages 1～4 211
Answer Key 221
Explanatory Answers 221
Translations for Reference 222
Unit Fourteen 224
Passages 1～4 224
Answer Key 233
Explanatory Answers 234
Translations for Reference 235
Unit Fifteen 237
Passages 1～4 237
Answer Key 246
Explanatory Answers 247
Translations for Reference 249
附录1 大学英语六级考试样题（二） 251
附录2 全国外语水平考试（WSK）英语试卷样题 262