◎學生課本附線上帳號 (拆封不退)
◎隨書附線上自修練習，包含單字、文法、聽力、口說、閱讀及影片練習活動
◎線上學習資源已轉移至全新 Cambridge One 平台，網址：cambridgeone.org
Interchange is a four-level, American English course that has been used by over 50 million students worldwide. This Level 1 Student's Book includes 16 units, eight progress checks, and a Grammar Plus section to ensure that students receive all of the practice they need. Inside each book is a single-use code for online self-study material. This gives access to videos and hundreds of automatically graded exercises, and works on PCs and Macs.