Britney Bear is looking forward to a surprising adventure （冒險）. "Having the chance to go to Antarctica （南極洲） is so wonderful," she says.

Bear is one of the 12 young people training for a chance to sail around the world. Next month, eight of them will set sail from South America. Explorer （探險者） Mike Horn will be the leader on a two-week trip. Their goal （目標(biāo)） is to learn how to help the planet. The journey is called Pangaea. It will last four years. Twelve teams of young explorers will cross all of the oceans and visit the North and South Poles.

    Mike Horn is from South Africa．He has traveled much of the Earth．“The planet is a beautiful place，”he said，but his adventures have also shown that oar planet is in danger．Horn began exploring（探險）at the age of 8 when he got his first bicycle．“I love to know about things．”he said．Horn knew that not every kid got the chance to explore the world，so he started Pangaea to get young people taking part in．

      Different explorers will travel on each of the l2 Pangaea trips．They will work hard．Some will use nets to take rubbish out of the ocean．Others will plant trees in tropical（熱帶的） areas． Horn asks each explorer to teach others what they have learned on the trip．He believes that young people can help save the planet．“Kids have surprisin9：ideas，and they want to speak out,’’ he said．

（   ） 1．This story is mostly about______.

A．a(chǎn) man’s outdoor adventures

B．ways that young people can help the planet

C．Pangaea trips of young people and Mike Horn   

D．kids who will travel with Mike Horn

（   ） 2．Why did Mike Horn start Pangaea?   

A．He wanted to go to Antarctica．   

B．Many young kids wanted him to organize it．

    C．He had to do so if he wanted to protect the planet．

    D．He wanted more．young people to help save the planet．

（   ） 3．Some young explorers will help by_____.   

A．using nets to take rubbish out of the ocean   

B．riding bicycles to talk about their ideas

C．showing Horn that the planet is in danger   

D．teaching young people how to plant trees

（   ） 4．How many Pangaea trips will there be?

    A．One．                 B．Twelve．             C．Eight．                   D．Foul

（   ） 5．Which word describes Mike Horn best according to the passage?

    A．Silly．                 B．Brave．               C．Quiet．                  D．Serious．