Textbook of Modern Spanish Language with Keys (+ mp3)

This textbook is intended for students of non-linguistic higher education institutions who are starting to learn Spanish from scratch and corresponds to the curriculum of the first and second years of studying Spanish for non-linguistic specialties. It can be used... in linguistic universities for teaching Spanish as a second foreign language, in foreign language courses, and can also be useful for anyone who wants to expand their knowledge of the Spanish language. An undeniable advantage of the book is the presence of keys.
The goal of the textbook is to develop students' skills in free communication, perception of unspecialized speech by ear, and reading texts of any complexity with a dictionary.
Accompanying the textbook is an audio disk recorded by speakers who are native speakers of the language.