A.advantage B.commercial C.conservation D.equipped E.incoming F.innovation G.limited H.local I.maintained J.occupations K.posted L.remained M.reservations N.submitted O.valuable Technological changes brought dramatic newoptions to Americans living in the 1990s. During thisdecade new forms of entertainment, commerce, research , and communication becamecommonplace in the U.S. The driving force behindmuch of this change was a(n) ____1____ popularlyknown as the Internet. The Internet was developed during the 1970s by the Department of Defense. In the case of anattack, military advisers suggested the ____2____ of being able to operate one computer fromanother terminal. In the early days, the Internet was used mainly by scientists tocommunicate with other scientists. The Internet ____3____ under government control until1984. · One early problem faced by Internet users was speed. Phone lines could only transmitinformation at a ____4____ rate. The development of fiber-optic (光纤) cables allowed for billionsof bits of information to be received every minute. Companies like Intel developed fastermicroprocessors, so personal computers could process the ____5____ signals at a more rapid rate. In the early 1990s, the World Wide Web was developed, in large part, for ____6____ purposes.Corporations created home pages where they could place text and graphics to sellproducts. Soon airline tickets, hotel ____7____ , and even cars and homes could be purchasedonline. Universities ____8____ research data on the Internet, so students could find ____9____ information without leaving their dormitories. Companies soon discovered that work could bedone at home and ____10____ online, so a whole new class of telecommuters began to earn a livingfrom home offices unshaven and wearing pajamas (睡衣) .