According to the text the trend of new culinary mosaic is most accelerated by______.

A．computer networking will be helpful in the food industry
B．24-hour supermarkets are not very common
C．few shopping centers are three-shift open at any hour
D．24-hour restaurants are not in practice in the great business capitals

A．There is nothing wrong with diet.
B．One should combine diet with exercise.
C．Exercise does more good than diet does.
D．Diet does not do any good to people.