阅读理解练习

AAs a teenager in 1972,Bill Gates boasted that hewould be a millionaire by the time he was 20.While hedid not quite achieve that goal,only 15 years later he wasa billionaire.And by 1992,as head of the Microsoft com-pany,he became the richest man in America with assets(资产)of approximately US $ 6.3 billion.Born in Seattle,Washington on 28,October 1956,