更多"Begun in the late 1960s by Pentagon"的相关试题:
[填空题]Begun in the late 1960s by Pentagon weapons researchers as a system for easing
communication between computers in disparate electric networks, the Internet has evolved (1) ______
into a popular vehicle for scientific research, communication, entertainment, and more. It
links together thousands of computer networks such as those belonging to corporations, (2) ______
commercial services, universities, and research centers, joining them as branches on a tree
to larger networks known as backbones. Once a computer is on-line, that is, connected by
modem or networking equipment of the Internet, the user can search through data banks (3) ______
for documents, chat with other computer users, or instant send opinions and observations (4) ______
to the likes of President Bill Clinton, film critic Roger Ebert, or rocker Billy Idol (just to name
a few). No central governing body runs the Internet, and nobody has an exact census of (5) ______
users. But e