important tool the computer is!

                   A．What a            B．How                  C．How an             D．What an

Bill Gates grew up in Seattle, Washington. When he was very young, he was good at science and math, and he said he wanted to be a scientist.

   Bill started to play with the computer at the age of 13. At that time, computers were very large machines. He was interested in a very old computer. He and some of his friends spent a lot of time doing unusual things with it. In the end, they worked out a software program (软件) for 4,200 dollars in 1972 when he was only 17.

   In 1973, Bill went to Harvard University. He developed(开发) the BASIC language for the first microcomputer. Later, he left the university and worked for a company. He began his company in 1975 with his friend Paul Allen. They thought that the computer would he a very important tool (工具) in every office and every home., so they began developing software for personal (个人的) computers. The software made it easier for people to use computers.

41．What did Bill Gates want to be when he was a small boy?

  A. A scientist.    B. A businessman.    C. A programmer    D. A teacher

42．When did ill Gates sell the firs software program for 4,200 dollars?

  A. In 1968.    B. In 1973.    C. In 1975.    D. In 1972.

43．How old was Bill Gates when he went to Harvard University?

  A. He was 13 years old.    B. He was 17 years old. 

  C. He was 18 years old.    D. He was 20 years old.

44．Who developed the BASIC language for the first microcomputer?

  A. Bill Gates himself.          B. Paul Allen. 

  C. Bill Gates and his friends.    D. Bill Gates and Paul Allen.

45．Which of the following is NOT true?

  A. Bill Gates worked or a company when he was in the university. 

  B. Bill Gates started his company with Paul Allen.

  C. Bill Gates was good at math and science when he was young.

  D. Bill Gates and Paul Allen developed the software for personal computers.