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xx年职称英语A级概括大意题答案「综合类」 为了帮助大家备考xx年的考试,了xx年的职称英语试题,希望能帮到大家! 1A hundredyears agothis week,a giganticexplosionripped撕裂open theday yabove aforest inwestern Siberia,leaving ascientificriddle thatendures tothis day. 2A dazzlinglight piercedthe heavens,followed bya shockwave asstrong as1,000atomic bombs.The explosionflattened80million treesacross anarea of2,000square kilometers.Thefireball wasso greatthat,a daylater,Londoners couldread theirnewspapersunder thenight sky.What causedthe so-called TunguskaEvent,named afterthenearby PodkamennayaTunguska river,still remainsa mystery. 3Experts suspectit wasa rockthat,aftertraveling inspace formillions ofyears,was destinedto crashto Earthatexactly7:17a.m.on June30,
1908.This possibilityworries scientists.“Imagine anunspotted asteroid小行星hitting asignificant chunk块of land...and imagineif thatarea,unlike Tunguska,werepopulated,”the Britishscience journalNature...。