填空题
The Internet is a global system of inter-connected computer networks to serve billions of users worldwide. It is a network of networks that (36) of millions of private, public, business, (37) and government networks of local to global (38) that are linked by a broad amount of electronic and optical (光纤的) networking (39) . The Internet carries a vast amount of information (40) and services.
Most traditional communications (41) , such as telephone and television services, are reshaped or (42) using the technologies of the Internet, giving (43) to services such as Voice over Internet. Newspaper publishing has been reshaped into websites and blogs. (44) .
The origins of the Internet reach back to the 1960s when the United States funded research projects of its military agencies to build robust and distributed computer networks. (45) . It led to the commercialization of an international network in the mid 1990s, and resulted in the following popularization of countless applications in virtually every aspect of modern human life. (46) .