Steven Jobs, the designer（设计者） of Apple Computer, school. At that time, he was not a good student and he schoolmates. When he went into college, he didn＇t change school in the second year. But he was full of new ideas. was not clever when he was in always made troubles with his a lot.
As the time goes on, all kinds of new inventions come into our daily life. New machines are 1 used all over the world. Why are machines so important and necessary （必要的） _2_ us？ Because they can 3 us do things _4_ For example, microwaves can heat water or cook food 5 we used to.