Proofread the given passage on ANSWER SHEET TWO as instructed. For a wrong word, underline the wrong word and write the correct one in the blank provided at the end of the line. For a missing word, mark the position of the missing word with a"∧"sign and write the word you believe to be missing in the blank provided at the end of the line. For an unnecessary word, cross the unnecessary word with a slash "—" and pat the word in the blank provided at the end of the line. Begun in the late 1960s by Pentagon weapons researchers as a system for easingcommunication between computers in disparate electric networks, the Internet has evolved (1) ______into a popular vehicle for scientific research, communication, entertainment, and more. Itlinks together thousands of computer networks such as those belonging to corporations, (2) ______commercial services, universities, and research centers, joining them as branches on a treeto larger networks known as backbones. Once a computer is on-line, that is, connected bymodem 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 namea few). No central governing body runs the Internet, and nobody has an exact census of (5) ______users. But estimates of the number already range from around 10 million to as high as 5million. Well over 10,000 separated computer networks are connected by the Internet, and (6) ______total traffic was expected to double during 1993. Today, the Internet is free resources andcommercial services that provide databases and computer files with a fee. Publishers are (7) ______seeking to make books and periodicals available on the Internet as a profit-making adventure (8) ______Meanwhile, works in the public domain have begun appearing on the Internet forusers to "upload" to their computers virtually free of charge. With electronic access to data (9) ______from all over the world, scholarly research that in the past would have required months oftravel could now be done at one’s desk. (10) ______