《技能英语：听力密码》特点：
　　循序渐进的训练方式
　　从音节、单词到句子，由易到难，便于掌握
　　新颖高效的学习方法
　　推测词义、攻克生词，分析逻辑、理解难句
　　相互渗透的语言技能
　　听、说、读、写各项技能巧妙融合、全面提高

Unit One
Unit Two
Unit Three
Unit Four
Unit Five
Unit Six
Unit Seven
Unit Eight
Unit Nine
Unit Ten
Unit Eleven
Unit Twelve
Unit Thirteen
Unit Fourteen
Unit Fifteen

Unit One
Unit Two
Unit Three
Unit Four
Unit Five
Unit Six
Unit Seven
Unit Eight
Unit Nine
Unit Ten
Unit Eleven
Unit Twelve
Unit Thirteen
Unit Fourteen
Unit Fifteen
Unit Sixteen
Unit Seventeen
Unit Eighteen
Unit Nineteen
Unit Twenty
Unit Twenty-One
Unit Twenty-Two
Unit Twenty-Three
Unit Twenty-Four
Unit Twenty-Five
Unit Twenty-Six
Unit Twenty-Seven
Unit Twenty-Eight
Unit Twenty-Nine
Unit Thirty
Unit Thirty-One
The Answers