完形填空。 Tina and Thomas Sjogren were the fourth and fifth people to reach the earth's three poles. Years ago, the couple were 1 across the North Atlantic on their way to Europe. Tina looked out of her window and was 2 by the vast amount of space in Greenland. 'The sky outside the window burst into different 3 , and auroras (极光) flew all around us. I 4 what it would be like to step down there and start walking 5 , all alone in such a place.' She thought, 'If this is what Iceland and Greenland are like, how 6 then must the Arctic be?' She turned to her husband, 7 him awake and said, 'Honey, let's go to the Poles!' Tina's 8 would not be their first adventure. They had already climbed Mount Qomolangma. The pair soon made a 9 to visit both the North and South Poles on skis, travelling 10 . On February 2, 2002, they reached the South Pole. Their journey 11 2 000 kilometres. After just 35 days of recovery and preparation, they 12 again. 'You are so 13 after the long expedition to the South Pole, so you don't know if you could do 14 right away.' On May 29, after travelling for the whole morning, as the couple watched with weak 15 , the numbers on their GPS showed that their goal had 16 been achieved. They had made it. Without the 17 of dogs or supplies dropped from planes, it was only their strength and willpower that 18 them to ski and swim their way. They got valuable experience but that did not come without a 19 . If you go on an adventure, there's always the risk of something going wrong. 20 , you will learn from it. (     )1.A. flying (     )2.A. frightened (     )3.A. shapes (     )4.A. remembered (     )5.A. carefully (     )6.A. cold (     )7.A. shook (     )8.A. idea (     )9.A. suggestion (     )10.A. non-stop (     )11.A. covered (     )12.A. broke down (     )13.A. excited (     )14.A. more (     )15.A. torchlight (     )16.A. surprisingly (     )17.A. reward (     )18.A. attracted (     )19.A. price (     )20.A. Therefore B. exploring B. bored B. colors B. wondered B. quickly B. bright B. knocked B. advice B. plan B. unsupported B. included B. settled down B. disappointed B. another B. sunlight B. luckily B. burden B. allowed B. success B. Instead C. swimming C. amazed C. sounds C. enjoyed C. aimlessly C. wonderful C kept C. order C. proposal C. unreturned C. lasted C. set out C. confused C. one C. breath C. accidentally C help C. taught C. mistake C. Otherwise D. sailing D. amused D. waves D. doubted D. freely D. terrible D. beat D. offer D. change D. unprepared D. crossed D. came back D. tired D. others D. eyesight D. eventually D. company D. forced D. change D. However