The home computers industry has been growing (21) in the world for the last twenty years. Computers used to be large, expensive machines that (22) very difficult to use. But scientists and technicians have been making smaller and cheaper while at the same time they have been made easier to use. As (23) , their popularity has been increasing as more people have been buying computers for their homes and businesses. Computers have been designed to store (24) and compute complex problems. Computers are used in (25) traffic in some cities. Stores use computers to keep records of their goods and to send (26) to their customers. Offices use computers to type letters, record business and communicate (27) other offices. People have been using computers in their homes to keep track of expenses and (28) their household appliances on and off. One important new (29) for computers is for entertainment. Many new games which have bee
A. application
B. usage
C. use
D. service
The home computers industry has been growing (21) in the world for the last twenty years. Computers used to be large, expensive machines that (22) very difficult to use. But scientists and technicians have been making smaller and cheaper while at the same time they have been made easier to use. As (23) , their popularity has been increasing as more people have been buying computers for their homes and businesses. Computers have been designed to store (24) and compute complex problems. Computers are used in (25) traffic in some cities. Stores use computers to keep records of their goods and to send (26) to their customers. Offices use computers to type letters, record business and communicate (27) other offices. People have been using computers in their homes to keep track of expenses and (28) their household appliances on and off. One important new (29) for computers is for entertainment. Many new games which have bee
A. get
B. make
C. turn
D. put
The home computer industry has been growing rapidly in the United States for the last ten years. Computers used to be large, expensive machines that were very difficult to use. But scientists and technicians have been making them smaller and cheaper while at the same time they have been made easier to use. As a result, their popularity(普及) has been increasing as more people have been buying computers for their homes and businesses. Computers have been designed to store information and computer problems that are difficult for human beings to work out. Some have voices that speak with the operators. Stores use computers to keep records of their inventories(库存货物) and to send bills to their customers. Offices use computers to copy letters, record business and keep track(足迹) of the money they spend.
One important new use for computers is for entertainment(娱乐). Many new games have been designed to be played on the computers. People of all ages have been playing these games. Peo
A. work rapidly
B. be large and expensive
C. be used for fun
D. be easy to use
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