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职称英语阅读练习题EruptionsofMountSaintHelensOnMarch27theU.S.Gover___entscientists___deadecisionaftertheypredictedtheeruptionofMountSaintHelens.Theytelephonedallstatesandlocalofficialsintheareaandtoldthemthataseriouseruptionwaspossibleatanytime.Roadswereclosedtoeveryoneex___ptscientistsandforestkeepersstruggledtokeepcuriousvisitorsawayfromthemountain.ShortlyafternoononMarch27MountSaintHelenseruptedforthefirsttimein123years.Peoplelivingnorthofthemountainheardaloudboomthatshooktheirwindowsandairlinepilotsflyingnearthevolcanosoonafterwardsdescribedathickblackcolumnofashandsteamshootingmorethan2100metersintothesky.Laterscientistsfoundthattheexplosionhad___deanewcrater大坑inthetopofthemountainnotfarfromtheoldcrater.Thenorthsideofthepeaknowhadahugebulge凸出部分whererockandi___hadbeenpushedoutbytheeruption.Aseconderuptionshook...。