Moyan has won the Noble Prize in Literature, which has made him world-famous, but before that no one could have imagined how great a role he _______ in the literary world.

A．had played

B．has played

C．is playing

D．was to play

（）作为互联网的诞生地，其互联网发展速度非常之快，信息化程度也是世界之最.

A、美国

B、日本

C、中国

D、德国