operators. Stores use computers to keep records of their inventories (库存货物) and to send bills to their customers(顾客) . Offices use computers to copy letters, record business and keep in touch with other offices. People have been using computers in their homes to keep track 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, People also have been buying home computers to play computer games, watch movies and listen to concerts at home. They have become very popular indeed. 　　

　　8. Computers used to _____. 　　

　　A. be large and expensive B. work rapidly　

　　C. be easy to use D. be used for fun 　　

　　9. In recent years , computers are being made ______. 　

　　A. larger and more expensive B. smaller and cheaper 　　

　　C. more difficult to use D. to work more slowly 　

　　10. Salesmen use computers mainly to ______. 　　

　　A. talk with their friends

　　B. play games for pleasure 　

C. A. check the list of goods and materials that are kept in the store house 　 　　 D. write letters 　　

　　11. The best title for the passage would be _______. 　

　　A. New Uses For Computers

　　B. The Popularity of Home Computers 　　

　　C. The Home Computer Industry

　　D. Computers At Home 　

　　D

　　Failure is probably the most exhausting experience a person ever has. There is nothing more tiring than not succeeding.

We experience this tiredness in two ways: as start-up fatigue(疲惫) and performance fatigue. In the former case, we keep putting off a task because it has either too boring or too difficult. And the longer we delay it, the more tired we feel.