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  3. Sixty days walking over ice and snow in temperature as low as -45 °C , with nothing to keep you company except the occasional po

Sixty days walking over ice and snow in temperature as low as -45 °C , with nothing to keep you company except the occasional po

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问题    Sixty days walking over ice and snow in temperature as low as -45 °C , with nothing to keep you company except the occasional polar "bear". This is no small achievement. Only a few people have ever walked to the North Pole unassisted, and if Christina Franco succeeds, she will have earned a place in the history books and met one of the few remaining challenges of exploration left to women.
   Her 480-mile journey will begin in northern Canada, dragging a sledge that weighs as much as she does. At the end of each day’s walking or skiing, she will pitch her tent in subzero temperatures, get into a sleeping bag filled with ice, and attempt to sleep to the unsettling background sounds of howling wind and cracking ice, which may or may not signal the approach of one of those polar bears. "I’ll carry a pistol to scare any bears away, " says Franco, 42. "The bears that far north won’t have had contact with humans, fortunately, so they won’t associate me with food, but they will be curious and that’s dangerous. If it uses a paw to see what you are, it could damage your tent—or your arm. I imagine I’ll have quite a few sleepless nights."
   Many of the early polar explorers suffered from disease and injuries, and while modern technology (lightweight materials, satellite phones, places on stand-by to carry out rescue missions) has lessened the dangers, it can never make such an inhospitable landscape anything approaching safe. It can take just five minutes for any uncovered skin to become frostbitten and, once the sun has risen, Franco will only be able to remove her sunglasses inside her tent, otherwise the intensity of the sunlight reflecting off the snow would cause snow blindness. Just to heighten the danger, the cold will slow down her brain functions, so it will be more difficult to make split-second decisions in the event of a sudden crisis.
   She will use about 8, 000 calories a day, losing nearly half a kilogram every 24 hours. "The problem is that the human body can only take on about 5, 500 calories a day, " she says. "So you have to fatten up before you set off or you’ll run out of energy." Franco is currently trying to put on 19 kilos. She may complain about not fitting into any of her dresses, but when Franco weighs herself in front of me and finds she’s lost one kilo rather than gained two, as she’d expected, she’s very upset. "I hope my scales are wrong because, if not, I’ve lost weight, " she says, reaching for one of many bars of chocolate lying around her kitchen.
What does the writer say about the history of exploration?
选项 A、Walking to the North Pole used to be considered easier than other journeys.
B、No woman has ever completed the journey to the geographic North Pole.
C、Female explorers have already done most of the world’s difficult journeys.
D、Franco is already an important historical figure for her previous journeys.
答案C
解析 根据第一段中的“Only a few people have ever walked to the North Pole unassisted，and if Christina Franco succeeds，she will have earned a place in the history books and met one of the few remaining challenges of exploration left to women．”可知，只有少数人曾独自走到北极，如果克里斯蒂娜-佛朗哥成功了，她将在史书中占有一席之地，完成为女性留下的尚未完成的为数不多的探险挑战之一。据此可知，女性探险家们已经完成了世界上大多数的艰难旅程。C项正确。A、B和D三项均属无中生有，不正确。
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