(2013·湖北，30)An artist who was recently traveling on a ferry to the southern island discovered________a long lost antique Greek vase

Nowadays I can choose online courses and study by__________.

下列各句中，加横线的成语使用恰当的一项是（3分）

There ______ a basketball match between Class One and Class Three this afternoon.

Nie Haisheng and Fei Junlong had a _______flight in space.