The Egyptians thought that ball playing was______.

A．leaders of the organized public opposition to information technologies
B．persons engaged in professional works
C．those who benefit most from information technologies
D．those who benefit least from information technologies

A．all of industrial work is controlled by computer
B．computer plays an important role in our economic life
C．computer becomes an essential part in our everyday life
D．all scientific work is done with the help of computer