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1、2011年职称英语理工A完形填空小抄版CaptainCookArrowLegend(库克船长弓箭的传说)Itwasagreatlegendwhileitlasted,butDNAtestinghasfinallyendedatwo-century-oldstoryoftheHawaiianarrowcarvedfromtheboneofBritishexplorerCaptainJamesCookwhodiedintheSandwichIslandsin1779.“ThereisnoCookintheAustralianMuseum,”museumcollectionmanagerJud
2、ePhilipsaidnotlongagoinannouncingtheDNAevidencethatthearrowwasnotmadeofCook’sbone.Butthatwillnotstopthemuseumfromcontinuingtodisplaythearrowinitsexhibition,“Uncovered:TreasuresoftheAustralianMuseum,”whichdoesincludeafeathercapepresentedtoCookbyHawaiianKingKalani’opu’uin1778.CookwasoneofBritain’sg
3、reatexplorersandiscreditedwithdiscoveringthe“GreatSouthLand,”nowAustralia,in1770.HewasclubbedtodeathintheSandwichIslands,nowHawaii.ThelegendofCook’sarrowbeganin1824whenHawaiianKingKamehamehaonhisdeathbedgavethearrowtoWilliamAdams,aLondonsurgeonandrelativeofCook’swife,sayingitwasmadeofCook’sboneaf
4、terthefatalfightwithislanders.Inthe1890sthearrowwasgiventotheAustralianMuseumandthelegendcontinueduntilitcameface-to-facewithscience.DNAtestingbylaboratoriesinAustraliaandNewZealandrevealedthearrowwasnotmadeofCook’sbonebutwasmorelikelymadeofanimalbone,saidPhilp.However,Cook’sfansrefusetogiveuphop
5、ethatoneCooklegendwillprovetrueandthatpartofhisremainswillstillbeuncovered,astheysaythereisevidencenotallofCook’sbodywasburiedatseain1779.“Onthisoccasiontechnologyhaswon,”saidCliffThornton,presidentoftheCaptainCookSociety,inastatementfromBritain.“ButIamsurethatoneofthesedays…oneoftheCooklegendswi
6、llprovetobetrueanditwillhappenoneday.”AvalancheandItsSafety(雪崩和安全问题)Anavalancheisasuddenandrapidflowofsnow,oftenmixedwithairandwater,downamountainside.Avalanchesareamongthebiggestdangersinthemountainsforbothlifeandproperty.Allavalanchesarecausedbyanover-burdenofmaterial,typicallysnowpack,thatisto
7、omassiveandunstablefortheslopethatsupportsit.Determiningthecriticalload,theamountofover-burdenwhichislikelytocauseanavalanche,isacomplextaskinvolvingtheevaluationofanumberoffactors.Terrainslopesflatterthan25degreesorst
