Due to the emergence of the information revolution, at the turn of the century, our educational theory and model are facing a major change and challenge. In the next few years, interactive multimedia systems will have a powerful impact on their rich functions The features of convenience and cheapness have been widely used in the education industry, thus setting off a new type of educational revolution. What is the central idea of this passage? ['The information revolution has emerged in human society.', 'Education faces challenges.', 'The application of powerful multimedia in education will trigger a new type of educational revolution.', 'Multimedia is very powerful.']