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1、查看答案：shift+ctrl+8目录1995.0841995.10141995.12241996.01341996.05441996.08541996.10641996.12741997.01841997.05941997.081041997.101141997.121241998.011341998.051441998.081541998.101641999.011741999.051841999.081941999.102032000.012122000.052212000.082312000.102412001.012502001.052602001.0
2、82702001.102802002.012902002.053002002.083102002.093202002.103302003.013402003.083502003.103602004.013702004.053804372004.083902004.104002005.014102005.054202005.084304371995.08Question1-9InvestigationoftheDeep-OceanKeywords:ocean,researchers,techniques,samples,rocksTheoceanbottom–ar
3、egionnearly2.5timesgreaterthanthetotallandareaoftheEarth–isavastfrontierthateventodayislargelyunexploredanduncharted.Untilaboutacenturyago,thedeep–oceanfloorwascompletelyinaccessible,hiddenbeneathwatersaveragingover3,6000metersdeep.Totallywithoutlightandsubjectedtointensepressureshun
4、dredsoftimesgreaterthanattheEarth'ssurface,thedeep–oceanbottomisahostileenvironmenttohumans,insomewaysasforbiddingandremoteasthevoidofouterspace.Althoughresearchershavetakensamplesofdeep–oceanrocksandsedimentsforoveracentury,thefirstdetailedglobalinvestigationoftheoceanbottomdidnotac
5、tuallystartuntil1968,withthebeginningoftheNationalScienceFoundation'sDeepSeaDrillingProject(DSDP).Usingtechniquesfirstdevelopedfortheoffshoreoilandgasindustry,theDSDP'sdrillship,theGlomarChallenger,wasabletomaintainasteadypositionontheocean'ssurfaceanddrillinverydeepwaters,extracting
6、samplesofsedimentsandrockfromtheoceanfloor.TheGlomarChallengercompleted96voyagesina15–yearresearchprogramthatendedinNovember1983.Duringthistime,thevessellogged600,000kilometersandtookalmost20,000coresamplesofseabedsedimentsandrocksat624drillingsitesaroundtheworld.TheGlomarChallenger'
7、scoresampleshaveallowedgeologiststoreconstructwhattheplanetlookedlikehundredsofmillionsofyearsagoandtocalculatewhatitwillprobablylooklikemillionsofyearsinthefuture.Today,largelyonthestrengthofevidencegatheredduringtheGlomarChallenger'svoyages,nearlyallearthscientistsagreeonthetheorie
8、sofplatetect
