Tina and Thomas Sjogren were the fourth people to reach the earth's poles. Years ago, the couple were     across the North Atlantic on their way to Europe. Tina looked out of her window and was    by the vast amount of space in Greenland. "The sky outside the window burst into different     and auroras(极光) flew all around us. I     what it would be like to step down there and start walking     ，all alone in such a place," she thought， "If this is what Iceland and Greenland are like, how     then must the Arctic be?" She turned to her husband，    him awake and said， "Honey，let's go to the Poles!"
Tina's     would not be their first adventure. They had already climbed Mount Qomolangma. The pair soon made a     to visit both the North and South Poles on skis, traveling     .
On February 2, 2002, they reached the South Pole. Their journey     2, 000 kilometers. After just 35 days of recovery and preparation, they     again. "You are so     after the long expedition to the South Pole, so you don't know if you could do     right away."
On May 29，after traveling for the whole morning, as the couple watched with weak     the numbers on their GPS showed that their goal had     been achieved. They had made it.
Without the  of dogs or supplies dropped from planes, it was only their strength and willpower that     them to ski and swim their way. They got valuable experience but that did not come without a     . If you go on an adventure, there's always the risk of something going wrong.     ，you will learn from it.
A. flying        B. exploring    C. swimming    D. sailing
A. frightened    B. bored        C. amazed      D. amused
A. shapes        B. colors       C. sounds      D. waves
A. remembered    B. wondered     C. enjoyed     D. doubted
A. carefully     B. quickly      C. aimlessly   D. freely
A. cold          B. bright       C. wonderful   D. terrible
A. shook         B. knocked      C. kept        D. beat
A. idea          B. advice       C. order       D. offer
A. suggestion    B. plan         C. proposal    D. change
A. non-stop      B. unsupported  C. unreturned  D. unprepared
A. covered       B. included     C. lasted      D. crossed
A. broke down    B. settled down C. set out     D. came back
A. excited       B. disappointed C. confused    D. tired
A. more          B. another      C. one         D. others
A. torchlight    B. sunlight     C. breath      D. eyesight
A. surprisingly  B. luckily      C. accidentally  D. eventually
A. reward        B. burden       C. help        D. company
A. attracted     B. allowed      C. taught      D. forced
A. price         B. success      C. mistake     D. change
A. Therefore     B. Instead      C. Otherwise   D. However