2011年职称英语理工类a级阅读判断精华

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1、2011年职称英语理工类A级阅读判断精华(4)来源：123职称英语网2011年11月10日　　EruptionsofMountSaintHelens　　OnMarch27，theUSGovernmentscientistsmadeadecisionaftertheypredictedtheeruptionofMountSaintHelens.Theytelephonedallstateandlocalofficialsintheareaandtoldthemthataseriouseruptionwaspossibleatanytime.Roadswereclosedtoeveryo

2、neexceptscientistsandforestkeepersstruggledtokeepcuriousvisitorsawayfromthemountain.　　ShortlyafternoononMarch27，MountSaintHelenseruptedforthefirsttimein123years.Peoplelivingnorthofthemountainheardaloudboomthatshooktheirwindows，andairlinepilotsflyingnearthevolcanosoonafterwardsdescribedathickbla

3、ckcolumnofashandsteamshootingmorethan2，100metersintothesky.　　Later，scientistsfoundthattheexplosionhadmadeanewcrater（大坑）inthetopofthemountain，notfarfromtheoldcrater.Thenorthsideofthepeak，nowhadahugebulge（凸出部分）whererockandicehadbeenpushedoutbytheeruption.　　AseconderuptionshookthemountainonMarch28

4、.It，too，sentupacolumnofblackashhighintothesky.ByMarch29，scientistsflyingoverthemountainsawthatasecondcraterformedabout9metersfromthefirstone.Strangeblueflamesflickered（闪烁）insidethecraterandsometimesjumpedfromonecratertotheother.　　ByApril1themountainhaderuptedseveralmoretimesandthesnowonthenorth

5、slopeofthepeakwasblackwithash.Ashcarriedbythewindhadfallenontownsasfaras240kilometersawayfromMountSaintHelens.　　DuringthefirstweekofApril，MountSaintHelensgavescientistssomethingnewtoworryabout：harmonictremors（震动）recordedbyscientistsshowedabigeruptionwouldhappen.AllduringAprilandintoMayMountSain

6、tHelenscontinuedtoshudder（震动）andshootoutash.ByApril8，thetwocratershadmergedtoformavastholenearlyahalfofakilometerwideand250metersdeep.　　Scientists'mainworryduringthistimewasthegrowingbulgeofrockandiceonthenorthfaceofthemountain.ByMay7scientistsfearedtheworst.TheirwarningsledWashingtonGovernorto

7、setupsafetyzonesaroundthemountain.Theinner"red"zonewasopentoscientistsonly.Theouter"blue"zonewasopenonlytopeoplewhogotspecialpermits.Butinspiteofthesewarnings，somepeoplegotpasttheroadbarriersandriskedtheirlivestryingtogetclosetoth