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选择性必修第四册Unit2IconicAttractionsⅠ.阅读理解AIn1969,watchingthelandingofApollo11ontheMoononTVfromhisparents’farminCanada,ChrisHadfieldwasamazedandexcited.Onthatday,atonlynineyearsold,Chrismadethemostimportantdecisionofhislife:Hewasgoingtobeanastronaut.Therewasn’tevenatrainingprograminCanadatobecomeanastronaut;butChriswasdetermined.Hespentagreatdealoftimestudyingandfixingengines.AfterschoolhejoinedtheCanadianarmywherehelearnedtoflymanydifferenttypesofplanes.ChrisdidalotofresearchfortheNationalAeronauticsandSpaceAdministration(NASA)intheUnitedStatesandhadspecialtraining.Finally,in1995,herodehisfirstrocketintospace.ChrisbecamethefirstCanadianastronauttowalkinspace,andwentonanumberofspacemissionsthroughouthiscareer.Themostmemorablewashisfive-monthstayontheInternationalSpaceStation(ISS)ascommander,betweenDecember2012andMay2013.HepostedonsocialmediathousandsofphotosofEarthandvideosofhimselfexplaininghowthingsworkinzerogravity.Hisfollowerscouldwatchhimsleeping,brushinghisteeth,washinghishands,orpreparing“space”snacksinzerogravity,whichturnedhimintoasocialmediaphenomenon.Today,Christravelstheworldgivingtalksabouthiswork.Heoncesaid,“Decideinyourheartofheartswhatreallyexcitesandchallengesyou,andstartmovingyourlifeinthatdirection.Everydecisionyoumake,fromwhatyoueattowhatyoudowithyourtimetonight,turnsyouintowhoyouaretomorrow.Lookatwhoyouwanttobe,andstartsculptingyourselfintothatperson.Youmaynotgetexactlywhereyouthoughtyou’dbe,butyouwillbedoingthingsthatsuityouinaprofessionyoubelievein.Don’tletliferandomlykickyouintotheadultyoudon’twanttobecome.”1.WhatledChristomakeuphismindtobeanastronaut?A.Thelifeonhisparents’farm.B.Hisabilitytoflyvariousplanes.C.Apollo11’slandingontheMoon.D.Hispassionforstudyingengines.2.WhichofthefollowingwasbestworthrememberingaboutChris’career?A.ServingintheCanadianarmy.B.WorkingascommanderontheISS.C.ReceivingalotoftrainingfromtheNASA.D.BeingthefirstCanadianastronauttowalkinspace.3.WhatmadeChrispopularinthemedia?A.Thespacetasksheconductedinhislife.B.Thepicturesandvideoshepostedonline.C.Hisstrongdeterminationtopursuehisdream.D.HisgreatcontributionstoCanada’sspaceindustry.4.WhatcanwelearnfromChris’wordsinthelastparagraph?A.Courageiswhatittakestoovercomedifficulties.B.Opportunitiesgohandinhandwithchallenges.C.Fromsmallbeginningscomegreatendings.D.Thesecretofsuccessliesinthefirmaim.BPlasticssustainabilityhascomealongwayinrecentyearsinlargepartthankstoscientificadvances.Butevenasplasticsbecomemoreandmoreenvironmentallyfriendly,theworldcontinuestobepollutedasmanyindustriesrelyonthemfortheirwidely-usedproducts.ThelatestresearchfromDrJunpengWang,assistantprofessorinUA’sSchoolofPolymerScienceandPolymerEngineering,hasamethodtoreducesuchwasteandclearascientificpathwaytoamoresustainablefuturethatcanappealtotherubber,tyre,automobileandelectronicsindustries.Theproblemathand:Syntheticpolymers,includingrubberandplastics,areusedinnearlyeveryaspectofdailylife.Theadvantageofsyntheticpolymerslieslargelyintheirexcellentstabilityandvariousmechanicalqualities.However,duetotheirhighdurability,wastematerialsmadeofthesepolymershaveaccumulatedinthelandandoceans,causingseriousconcernsfortheecosystem.Apromisingmethodtotacklethechallengesinplasticssustainabilityistoreplacecurrentpolymerswithrecyclableonesinordertoachieveacircularuseofmaterials.Thekeyinthedesignofchemicallyrecyclablepolymersistoidentifytherightmonomer.Throughcarefulcomputationalcalculation,theresearchersidentifiedatargetingmonomer.Theythenpreparedthemonomerandpolymersthroughchemicalsynthesis,usingabundantlyavailablestartingmaterials.Wang’sresearchgroup,includingpolymersciencegraduatestudentsandapostdoctoralscientist,aimstodeveloppolymersthatcanbebrokendownintotheircomponents.Whentheelementforbreakingthemdownisabsentorremoved,thepolymerswillbehighlystableandtheirthermalandmechanicalqualitiescanbetunedtomeettheneedsofvariousapplications.“Thechemicallyrecyclablepolymerswedevelopedshowexcellentthermalstabilityandmechanicalqualitiesandcanbeusedtopreparebothrubberandplastics,”saysWang.“Weexpectthismaterialtobeanattractivecandidatetoreplacecurrentpolymers.”5.WhatdoweknowaboutDrJunpengWang’sresearch?A.Ithelpsimprovethelevelofplasticsstability.B.Itshowsplasticsaremoreenvironmentallyfriendly.C.Itoffersmorewidely-usedproductstomanyindustries.D.Ittriestodevelopawaytorecycleplasticsscientifically.6.What’stheauthor’sattitudetothecurrentsyntheticpolymers?A.Objective.B.Favorable.C.Unconcerned.D.Doubtful.7.Whatdoesthetextmainlyfocuson?A.Astudyconductedtomakeplasticslastalongerperiodoftime.B.Aqualityforplasticstosatisfytheneedsofvariousindustries.C.Anewmethoddevelopedtosolvetheplasticssustainabilityproblem.D.Aresearchgroupdevotedtoplasticssustainabilityfortheecosystem.8.Inwhichsectionofanewspapermaythetextappear?A.Relationship.B.Fashion.C.Culture.D.Science.CIfyouwereasuperhero,whatwouldyoursuperpowerbe?Wouldyouwanttoflyorbeinvisible?Or,perhaps,you’dratherhavethepowertoreadminds?Wouldn’tthatbecool?Readingmindsisnotasfar-fetchedasyoumightthink.Infact,researchersattheMassachusettsInstitute
本文标题:选择性必修第四册 Unit 2 Iconic Attractions
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