C．She decided to attend a part­time course.

　　D．She needed a rest after working extra hours.

　　8．What has the author learned from her own experiences?

　　A．Less successful students can still have a career.

　　B．Qualifications are necessary for a career.

　　C．Hard work makes an excellent student.

　　D．One must choose the job she likes.

　　C

　　Do you want to see the effects of global warming？Then head north. Will Steger is going to take all of us there.

　　Steger, 64，the first person to make a dogsled trip to the North Pole，is a very famous and admired polar explorer. He's at home in frozen parts of the world where few humans ever step on. Steger is also a devoted environmentalist who was early to ring the alarm bell on global warming. He saw its effects first­hand in frequent polar expeditions to the Arctic and Antarctica.

　　Steger's team will include some already­famous young explorers. Sam Branson, the 22­year­old son of British airline tycoon (大亨) Richard Branson, is an experienced Arctic traveler. Also on the journey will be 27­year­old Norwegian Sigarid Ekran. Last year, Ekran became only the second woman in history to win Rookie (新秀) of the Year for the Iditarod Sled Dog Race.

　　What they will see may be very surprising. Even Steger doesn't know exactly what to expect. Climate change has already reshaped the geography of the Arctic."Within a decade or less, it's going to be impossible to reach the North Pole by dog team without flotation (漂浮)，" says Steger.

　　"Climate change is happening, but people can change too. Their willingness to change will determine the shape of the Earth's future."

　　9．Why is Steger about to organize the adventure to the Arctic?

　　A．To collect evidence for his scientific research.

　　B．To develop the young people's adventurous spirit.

　　C．To let more people enjoy its natural beauty.

D．To let people realize the bad effects of global warming.