There were many famous explorers（探险家）in ancient China. Let's have a look.
Xu Fu
Xu Fu was an explorer during the Qin Dynasty. Emperor Qin Shihuang asked（A）____ to look for the medicine that could make a person live for ever. Xu Fu went on two trips. In his second trip, he took more people with different skills to go with him. Finally, they arrived on a big island. They taught the people there many skills, for example, to（B）grow rice.
Zhang Qian
Zhang Qian was a Chinese explorer in the Han Dynasty and he was also a pioneer in setting up the Silk Road. The emperor sent Zhang Qian to explore and open routes（路线）to the outside world. （C）他去了许多国家. His journeys were difficult. After he came back, he made useful reports（D）on the people and cultures there.
Zheng He
Zheng He was a famous Chinese explorer in the Ming Dynasty. （E）He was also an officer of the Yongle Emperor. He took seven great voyages（航行）. He built a group of ships,（F）____ biggest in the world at that time. The ships were known as treasure ships. His travels were so important that they are still studied today.
