of nature and using them to make men happier." He said he had enough inventions in his mind to give him another 100 years of work.

4. Edison thought____________.

　　 A. he could be happy if he was a genius

　　B. genius plays the most important part in one's success

　　C. genius could do better than hard work

　　D. hard work could do better than genius

　　5. Edison was _____________.

　　A. interested in discovering the secrets of nature

　　B. very much interested in nature

　　C. interested in changing people's ideas

　　D. uninterested in making people happier by discovering the secrets of nature

　　6. In Edison's opinion,______________.

　　 A. thinking can supply people with enjoyment and pleasure as well as help

B. people's success lies mostly in genius

　　C. hard work is the second important thing in making people successful

D. there are few secrets for him to discover later

　　7. The last sentence in the passage most probably implies __________ .

A. Edison made 100 inventions in his life

　　B. life is too short for Edison to invent more for human beings

　　C. Edison was able to live and work for 100 years

　　D. People of his time were ready to give Edison another 100 years' work

　　　　　　　　　　　　　　　C

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 has been increasing as more people have been buying computers for their homes and businesses. Computers have been designed to store information and compute problems that are difficult for human beings to work out. Some have voices that speak with the