The author's attitude towards intelligent seem to be that_____.

A．the speed of computers is faster than ever
B．scientists encounter unprecedented difficulties
C．the intelligence of computers is more important than the speed
D．there is much room for the improvement of computer intelligence

A．the progress in biography is so great that people feel astonished
B．the progress in cryogenics is so great that people feel astonished
C．the progress in information technology has great influence on human
D．the progress in information technology is beneficial to human