Look carefully at the back of a California state quarter（25美分）.A man with a walking stick is pictured there.Who is this man？And why is he so important that he is featured on the back of a coin？
  The man on this quarter is John Muir.Even as a child，Muir loved watching nature.As a young man，he spent much of his life exploring the beauty of the wilderness．He walked more than a thousand miles across the country，through fields and woods．John Muir liked writing about the places he visited，describing their beauty.
  Muir also wrote about problems.In order to get more farmland for sheep and cattle，many trees were being cut down.This made Muir unhappy and worried，because he knew that trees were important to forests and to the animals that lived in tjye.aim.He wrote articles in magazines and newspapers to spread the word about conserving（保護(hù)） forests.
  Muir wrote letters to important people，such as President Theodore Roosevelt.The president admired Muir's love for nature．When Roosevelt came to visit Muir in California.Muir convinced the president to go camping with him for three nights under the trees so they could talk about conservation．Later，President Roosevelt set aside（留出） 148 million acres of land for national forests and established five national parks.
  Muir's work as a conservationist helped us to see the beauty of our natural world.He made us understand the importance of protecting our Earth and our resources---then，now，and for the future．

（1）What did John Muir spend much of his life doing when he was a young man？

C

C

A．Watching natural views.
B．Writing about the places he visited.
C．Exploring the beauty of the wilderness.
D．Creating farmland for sheep and cattle.
（2）Why did President Theodore Roosevelt visit John Muir？

C

C

A．Because Roosevelt loved watching nature.
B．Because Roosevelt received letters from John Muir.
C．Because Roosevelt admired John Muir's love for nature.
D．Because Roosevelt was sad about the problems with farmland.
（3）What happened after President Roosevelt went camping with John Muir？

B

B

A．Many trees were cut down.
B．Five national parks were established.
C．More homes and businesses were built.
D．More farmland was used for sheep and cattle.
（4）Why is John Muir featured on the back of a California state quarter？

B

B

A．Because he walked over a thousand miles across the country.
B．Because he helped people understand the importance of protecting the natural world.
C．Because he wrote articles to spread the word about conserving forests.
D．Because he once wrote several letters to President Theodore Roosevelt.
（5）What is the writer's purpose of writing this article？

C

C

A．To advise readers to become active conservationists.
B．To make us interested in the story about a great man.
C．To tell us something about an important person in history.
D．To give information about how to conserve the environment.