A.A diary.
B.A fairy tale.
C.A history textbook.
D.A biography.
A.He was a sports fan.
B.He loved adventures.
C.He disliked school.
D.He liked hair-raising stories.
A.Encourage people to undertake adventures.
B.Publicize his colorful and unique life stories.
C.Raise people's environmental awareness.
D.Attract people to America's national parks.