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1、It is saidt the Inuive many words for snow, but when it comes to theNorthwest Passage only one type of frozen water matters: multiyear ice. It canslice through the hull of a ship like a knife through butter and it persistshepassages waters despite unprecedented warminghe Arctic Ocean, thwartingshipp
2、ers in search of a shortcut betn Europe and Asia.The fabled Northwest Passage has made headliver since itwed last yearfor thetime. For three centuries the quest for an expedited route betntheand Pacific oceans rivaled todays space race, with Europeansupowers vying for the prize.dreds of sailors and
3、countless expeditionsventuredo Canadas Arctic waters, including such naval luminaries as Sir FrancisDrake, Captain James Cook and the ill-fated Henry Hudson, who left his nameand lost his lifeon the Canadian bayt marks itrance.Now, with the Arctics sea ihrinking at a rate of 10 percent per decade, t
4、hiscoveted shiplane has opened for businessbut shippers are not rushing touse it. The reason: as fate would have it, global warming appears to also beincreasing the amount of potentially deadly multiyear ice cks lurkinghenewly opened pathway.以下所有内容,请计时 3 小时 10min 之内完成。“The thing is, the Canadian Arc
5、tic has a totally different ice regimen the ArcticOcean,” says Stephen Howell, a climatologistheerdisciplinary Center onClimate Change at the University of Waterloo in Ontario.In fact, the Canadian Arctic Archipelago acts as a “drarap” for ship-wreckingmultiyear ice, Howell says. This year, for exle
6、, when the-year icehepassage had melted, it opened the way for multiyear ice (MYI) from the QueenElizabeth Islands to flowo and clog the Northwest Passage. “We call it a MYIinva andts going to be the threat as we transition to an ice-freesummertime Arctic,” he says.“The-year ice,ts sort of like Swis
7、s cheese and you can just plow throughit,” Howell says. This ice freezes over a wer and idom thickern three feet(one meter). Often,-year ice melts the summer after its frozen, but if it doesnt,ites thicker the following wer andes multiyear ice. “The multiyearice isnt like Swiss cheese; its solid and
8、 trouble” for shipst collide with it, hesays. (392)山海经记:“舜逐三苗于三危。”可见敦煌是华夏文明的早期屏障。公元 6 年,一个名叫乐樽的和尚开始挖掘这里的第一个石窟,从此这个叫作三危山的地方就离不开工匠斧凿的叮当声。莫高窟坐落在敦煌市鸣沙山东麓的崖壁上,是敦煌石窟的代表。石壁上四周尽是与有关的壁画和彩塑,有肃穆端庄的佛影,也有飘舞灵动的飞天敦煌飞天借助云彩,凭借飘逸的衣裙、飞舞的彩带凌空飞翔,千姿百态,并融合了外来飞天艺术的成就,堪称最为独特的飞天形象。飞天虽自五始造型动态上无所创新,逐步公式化,但是细看五代前的作品,脸形丰满,五官匀称,身材修长,绰约多姿,是敦煌壁画中的一大亮点,以至于人们提起敦煌,就会想到神
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