阅读理解 The Internet plays a big part in human life.We use it for work and pleasure. We use it to learn a new language. We findadvice on it. We use it to connect with family and friends. We use it to stayin touch with events we care about. The list goes on and on. As far as the Internet being a part of ourlives, well, that train has left the station. There is no going back toan Internet-free life. But can using the Internet too much be bad for ourhealth? It might be, say researchers. A new study finds that heavy Internet usemay be connected to high blood pressure in a young group: teenage