The computer is fast, and never makes a mistake, while people are too slow, and full of mistakes sometimes. That’s __1__ people often say when __2__ talk about computers. For over a quarter of a century, scientists have been __3__ better and better computers. Now a computer can __4__ a lot of __5__ jobs wonderfully. It is __6__ used in factories, hospitals, post offices and airports. A computer can report, decide and control in almost __7__ field.