Unit 2 課文語法填空-高中英語牛津譯林版（2020）選擇性必修第三冊

Unit2課文語篇填空LifeonaspacestationLivinginspaceiseverywould-beastronaut'sdream.Mysix-monthstayonaspacestationhascometoanend,andithasbeen1.________challengingbutmagicaladventure.Ibetyou'dlovetoknowwhatdailylifeislikeupinspaceandhowitdiffersfromthatontheEarth—thelowgravitydefinitelymakesordinarythingsstrange!Thestrangenessoflivinginspaceisapparentfromthemomentwesleep.Duetothenear2.________(absent)ofgravityinspace,wehavetoattachourselvessothatwedon'tfloataround.Weusuallysleepinprivatequarters,whicharemorelikelargecupboards,orinsleepingbags3.________(attach)tothewallsortheceiling.It'sstrangethatwetrytosleepwithnopressureagainstourback,buttheunusualbedsdon'tbotherusanymore.Afterabouteighthoursofsleep,westartourdayofwork.Theroutinetasksthatoccupymostofthedayare4.________(demand),buttheycanalsobeextremelyrewarding.Ourmainmissionistoconductscientificresearch.Weneedtoevaluatetheeffectsoflowgravityonanimalsandplants.Creaturessuchasmice,fishandmosquitoeshavealsobeensenttothestation!Inalow-gravityenvironment,wecanlearnmoreaboutchangesincellsandmicroorganismsunderthemicroscope.Aswellasdoingthesebiologicalexperiments,wecarry5.________experimentsinotherresearchfields.IhavebeenworkingononeexperimentwhichlocatesandtrackslightningoverlargeregionsoftheEarth.Hopefully,itwillcastnewlightontheEarth'sclimateandleadtobetterlightningprotection.Withsomuchgoingon,thespacestationneedsalotofmaintenance,soweconstantlychecksupportsystemsanddosomecleaning.Themostchallengingworktakesplacewhenweneedtoperformtasksoutsidethespacestation,suchastestingnewequipment,monitoringscientificexperimentsorrepairingthespacestation.Inthecircumstances,it'stimeforaspacewalk.First,weputonourspacesuits,6.________allowustobreatheinspaceandprotectusfromexposuretothecoldandradiation.Thenweheadout,andsometimesperformtasksforhoursatatime,withthebeautifulEarthvisiblebelow.SplendidastheviewoftheEarthis,spacewalkingisnotasexcitingasyoumightthink.It'sprobablythemostdangerouswork,withpotentialriskssuchaselectricshocks.That's7.________everyspacewalkiscarefullyplanned.Inviewofthelow-gravityenvironment,eatingisalsodifferentinspace.Mostfoodisdriedorfreeze-dried.It'saluxurytoeatfreshfood,becausefreshproducesuchasfruitandvegetablescanonlybedeliveredtothespacestationfromtheEartheverycoupleofmonths.Saltandpepperareonlyinliquidform,sothattheywillnotfloatawayandblocktheairpipes.However,liquidscan'tbeeasilycontrolledinspace.Wemustdrinkwateroranyotherliquidsoutofabagthroughathintubeofplastic.Furthermore,8.________(keep)ourbodyhealthy,wemustensureabalancedsupplyofnutrientsbytakingpills.Spendingsometimeinthegymisofvitalimportancetoastronauts'health.Didyouknowthatinjustfivemonths,astronautscouldloseasignificantamountofmuscleandbonemass?9.________(consider)thesenegativeeffectslowgravityhasonthehumanbody,wedisciplineourselvestodoatleasttwohoursofexerciseeveryday.Exerciseinspaceisnotyouraverageworkout.Wehavetobetiedontospeciallydesignedexerciseequipmenttostopourselvesfromfloatingaround.Duringourleisuretime,there'snothingwelikemorethantositbackwiththerestofthecrewandwatchourremarkableplanetgoby,takingpicturesforourfamilyandfriendsbackhome.Asthespacestationtravels10._____aspeedofabout17,500milesperhour,wegettoseethesunriseevery90minutes.Inthesepreciousmoments,allthechallengesoflifeinspaceseemworthit.【答案】1.a;2.absence;3.attached;4.demanding;5.out;6.which;7.why;8.tokeep;9.Considering;10.atWhyweexploreIn1969,whenNeilArmstrongfirstlandedontheMoon,manypeoplethoughtthatsoonwewouldbe1.________(regular)visitingotherplanetsinoursolarsystemandwouldevendaretotravelbeyondit.Thisisclearlynotthecase.Therealityisthatspaceexplorationisextremelydifficultanddangerous,cantakeaverylongtimeand2.________(cost)ahugeamountofmoney.Somepeoplebelievethatwhilespaceexplorationexpandsourunderstandingoftheuniverse,itisawasteofthepublicpurseanddoesnothingtoenhancethequalityofourliveshereontheEarth.Whydowecontinuetoexplorespace,then?Itisinournaturetoexplore.FromtheveryearlydaysofhumanlifeontheEarth,ourcuriosityabouttheunknownhaskeptusadventuringintonewplaces.Welong3._______(visit)thickandwildforests,climbvastmountainranges,andcrossdeepoceans.Wedesiretoexplorethefurthestfrontierofall—space.AsStephenHawkingoncesaid,“Remembertolookupatthestarsandnotdownatyourfeet.Trytomakesenseofwhatyouseeandwonderaboutwhatmakestheuniverseexist.Becurious.”4.________wearefascinatedbytheskyisevidentinancienttalesfromaroundtheworld,suchasthatofChang'e.Whilespaceexplorationisareality,weremaincuriousaboutthemysteriesoftheuniverse.Witheachspacemissioncomesgreaterinsight,thusmotivatingustocontinuealongthesamepathofadventure.Theresultsofthesespaceinvestigationshavemademajorcontributions5.________anunderstandingoftheorigin,evolution,andlikelyfutureoftheuniverse,suchasplanets,stars,andallotherformsofmatterandenergy.Exploringspacehelpsaddressfundamentalquestionsaboutourplaceintheuniverseandthehistoryofoursolarsystem.Itisthroughourresearchintospace6.________wehaveconfirmedthattheEarthisroundandthatitorbitstheSun.Aswelearnmoreabouttheuniverse,wemayonedayanswerthequestionwhetherthereislifeonotherplanets.Withtechnologiesfirstresearchedanddevelopedforspaceexploration,wecansolvesomeofthebigproblems7.________(face)mankind,makingourlivessaferandeasier.Oneoftheseisearthquakeshockabsorbers.Shockabsorbersoriginallyappliedtothespaceshuttlelaunchhavealsobeensetupinthecitieswithahigh8.________(frequent)ofearthquakesinordertoprotectbuildingsandsavelives.Sometechnologiesneedfurtherresearchtobettersolvereal-lifeproblems.Forexample,liquidhydrogenisacleanalternativeenergysourcethatisusedwidelyasrocketfuel,anditislikelythathydrogenfuelcellvehicleswillbemass-producedandlaunchedinthenearfuture.ThesescientificandtechnologicaladvancescanprovidebenefitstosocietiesontheEarthinmanyareasincludinghealth,energyandinformationtechnology.Thisshouldbeastrongmotiveforcontinuingtoexplorespace.Althoughspaceexplorationdemandshugeinvestment,thespaceindustrycanactuallybringgreateconomicvalue.Ithasbeencalculatedthattheglobalspaceeconomyisincreasingbybillionsofdollarseveryyear.Atthesametime,spaceexplorationcanprovideavarietyofcareeropportunitiesforyoungpeople.Jobsinthespaceindustrygofarbeyondtheastronautsthatreceivewidespreadmediacoverage.Therearemanysupportstaffontheground,suchasengineers,9.________(mechanic)andresearchassistants.M