66. Computers used to _______.

　　A. work rapidly B. be large and expensive

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

　　67. In recent years, computers are being made _______.

　　larger and more expensive B. smaller and cheaper

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

　　68. Home computers can be used for _______.

　　A. writing letters B. playing games C. doing business D. all of the above

　　69. Salesmen use computers mainly to _______.

　　check the list of goods and materials that are kept in the store house

　　play games for pleasure

　　talk with their friends

　　write letters

　　70. 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