In a rapidly changing world, education is the key to success. Pearson international is a global education group with a history of more than 150 years. Pearson has always been committed to providing education content, education information technology, testing and evaluation, professional certification, and all education-related services to education employees and students of all ages. Pearson international has a presence in more than 60 countries and owns education brands in various disciplines, including Longman, Scott Foresman, addison-wesley and Benjamin Cummings. With annual sales of about us $5 billion, Pearson education group, as the publishing group providing lifelong education products and services, ranks first in the world in many fields such as higher education, education in primary and secondary schools, education in English, professional publishing and education online, helping more than 100 million people around the world receive education and training. Pearson's world-class tools, content, products and services are designed to help people adapt to the changing world, and ultimately make progress in their lives.