Do you know the story of a dolphin（海豚）named Filippo? He lived in the sea of Italy. He was away from his family and friends, so he often swam 1 in the sea.
Filippo was 2 and not afraid of people. Not only tourists but also local（当地的）people like to go to 3 him. Filippo was a popular star there. Later, he became a hero（英雄）.
It had something to do with a little 4 called Marco.
One sunny afternoon, Marco had a 5 with his family on a boat. Marco was excited. He tried to stand up to see the beautiful fish. 6 , he lost his balance（平衡）and 7 the ocean. His parents were doing something else at that time, so they didn't 8 what happened. Marco couldn't 9 . He was going down deeper and deeper. "I thought I was going to 10 ," said Marco.
At that time, Filippo came quickly and pushed Marco to the surface（表面）of the ocean. The big animal tried his best to take the boy close enough to the 11 so that his father could pull him out of the ocean. Just like this, Filippo 12 the boy.
Marco's mother, Signora, was so surprised when she saw this. She couldn't believe her 13 . She said, "The dolphin is so smart. It seems 14 that an animal could do that."
From that day on, more people learned about the story of Filippo. He was not only a hero, but also a 15 of hope, love and the special relationship between animals and humans.
