Book & mp3 CD. Language of international communication, English enjoys a particular or official status in 75 countries, and more than 750 million persons speak it in first or second language. Strong of its Latin and Germanic roots, English is a language of grammatical subtleties and a rich definite vocabulary which it is necessary to control from the beginning of its study. This edition favours an approach by oral dialogue, progressive workmanship of understanding. The mp3 CD allows to load all or part recording of method on your mp3 player. You can listen to lessons and to the continuous financial years or sentence by sentence. The CD contains quality recording studio and so many files sound and text as of sentences in English in the book. If your reader allows this functionality, texts are shown at the same time in listening.