聽材料，回答第3題。
 （1）Where was Zheng He born？
A.In Guizhou.
B.In Hainan.
C.In Yunnan.
（2）What was Zheng He's task from the Yongle Emperor？
A.To search for treasure.
B.To enjoy the sights around the world.
C.To develop relations and set up trade routes with foreign countries.
（3）How many people could the great fleet of ships carry ？
A.2，500.
B.25，000.
C.250，000.