【英语阅读题..Manhasalongwaytogobeforeheplumbstheoceans,muchlessunderstandswhatheseesthere—if,indeed,hecanseeverymuch.Evenatdepthsof1,000feet,diversdiscoverthatmentalconcentrationcanbeamajoreffort;moreover,whe】
英语阅读题..
Manhasalongwaytogobeforeheplumbstheoceans,muchlessunderstandswhatheseesthere—if,indeed,hecanseeverymuch.Evenatdepthsof1,000feet,diversdiscoverthatmentalconcentrationcanbeamajoreffort;moreover,whentheirbrainsdoreachdecisionstheirmusclesaresluggish.Onediverthoughthewasturninghisbodythroughaquartercircle;histrunkdidturnbuthisfeetstayedwheretheyhadbeenandhislegbonesseparatedatthekneejoints.Vocalcordsandtherestofthespeechapparatusarealsoaffectedbythepressuresofthesea;insteadofnormal,clearlypronouncedwords,theyproducesquawkingsoundslikethoseWaltDisneyinventedforthespeechofDonaldDuck;communicationisconsequentlydifficult,oftenimpossible.Thecoldofthedarkanddirtywaterissopenetratingthatonediverhadtoendurebodytremors.
Andyet,forallthesedifficulties,theseastilloffersthepromiseofsolutionstosomeofman’smostseriousproblems.Atechnologycapableofcreatingmannedandunmannedspacevehiclesiscertainlycapableofbuildingvehiclesthatcanprotectexplorersfromtherigorsoftheunderseaenvironmentandvehiclesthatcanperformtheirtasksbyremotecontrol.Avastuntappedfoodsupply,agreatstorehouseofmineralwealth,aworldofasyetundiscoveredanimalandplantlife,alaboratoryforthestudyoftheearthitself—theseaholdsformanoncehehasbeguntolearnaboutit.
1.Whichofthefollowinghappenedtoonediverwhotriedtoturnhisbodywhiledeepintheocean?
A.Hisbraincouldnotcommandhislegs.
B.Hisfeetmovedinoppositedirections.
C.Hisfeetmovedbuthisbodystayedwhereithadbeen.
D.Hisbalancewasaffectedandhefelltohisknees.
2.Thebasiccauseofthechangeinthesoundofthedivers’speechisthe_______.
A.difficultyofcommunication
B.destructionofthevocalcords
C.speechofDonaldDuckinventedbyWaltDisney
D.greatwaterpressure
3.Accordingtothepassage,successfulexplorationoftheoceancanbepredictedbecauseoftheexistenceof_______.
A.mannedandunmannedunderseavehicles
B.successfulspacevehicles
C.mineralwealthintheocean
D.tasks