上冊(cè)
Unit One
Key to Exercises
參考譯文
Unit Two
Key to Exercises
參考譯文
Unit Three
Key to Exercises
參考譯文
Unit Four
Key to Exercises
參考譯文
Unit Five
Key to Exercises
參考譯文
Unit Six
Key to Exercises
參考譯文
Unit Seven
Key to Exercises
參考譯文
Unit Eight
Key to Exercises
參考譯文
下冊(cè)
Unit One
Key to Exercises
參考譯文
Unit Two
Key to Exercises
參考譯文
Unit Three
Key to Exercises
參考譯文
Unit Four
Key to Exercises
參考譯文
Unit Five
Key to Exercises
參考譯文
Unit Six
Key to Exercises
參考譯文
Unit Seven
Key to Exercises
參考譯文
Unit Eight
Key to Exercises
參考譯文
自測(cè)題
Unit One
Key to Unit One
Unit Two
Key to Unit Two
Unit Three
Key to Unit Three
Unit Four
Key to Unit Four
Unit Five
Key to Unit Five