This book is equivalent to the levels B1 and B2, according to the Common European Framework of Reference for Languages. The authors place a great deal of importance on real materials (documents, photographs, advertisements, etc...), which put students in contact with authentic language and cultural samples. The book provides a wide variety of communicative, grammatical and lexical exercises. At the beginning of the book there is a Review Unit, for the teacher to test the students" knowledge. The book includes at the back the transcripts of the listening activities recorded on the audio CD (available separately). It is a new version Nuevoo Avance from 2009.