Choose the best answers according to the text.
1．What is the text mainly about?
A．The development of marathon.
B．The origin of marathon.
C．The distance of marathon.
D．The reason why marathon is the ultimate Olympic event.
2．Marathon was regarded as one of the events of the Olympics in honor of __________．
A．the battle in Marathon
B．the victory of the Greeks over the Persians
C．the soldier who devoted his life for his country after a long running
