Відповіді: Стр.123 (1b)

The Internet is the worldwide, publicly accessible network that consists of millions of smelter domestic, academic, business, and government networks. It is an information resource where you can find various information and collection of services. It is also a communication system. E-mail is an important communications service available on the Internet. It is a community of users. There are a huge number of communities online every day in the Internet.