The success of a country in the New Age of Superstuff lies in________.

A．has advantages over plastics
B．will dominate future life of human beings
C．will be endowed with more practical uses
D．has gotten rid of the slightest imperfection of brittleness

A．was not attractive enough for its limited practice
B．was too dull to attract people' s attentions
C．was not well shaped to arouse people's interests
D．gave birth to new materials which could generate electric power