Exposure This is the nineteenth day. For a language learner, exposure to the foreign environment is an internal part of learning. However ,it doesn't mean that we must go abroad just in order to gain opportunities to communicate with foreigners. In this Internet-immersed age, reading and listening to raw foreign materail provides us with a practical and efficient approach to be exposed to the foreign environment. So, let's read and listen to more foreign books ,magazines and other useful metrail. I am grateful to everyone, especially to my family, friends and teachers. Good night.