asked him what he wanted to be, he always said,“A scientist(科学家).”When he was 13 years old, Bill started to play with computers. At that time, compu- ters were very big machines. He and some
Newton (牛顿)One day, Newton was walking and thinking in a garden. He saw that an apple fell from a tree to the ground. It came into his thought that the power of gravity was not limited to a cert