Unit 5 Period 2 同步課后練習(xí)

Unit5AdelicateworldPeriod2一詞形轉(zhuǎn)換和動(dòng)詞的形式變換(用所給詞的正確形式填空)1．Ithinkitnogood(do)toomanythingsforchildren.2．Althoughitisn'tallowedtosetofffireworks,peoplestillthinkitnecessary____(celebrate)theSpringFestivalwarmly.3．Ifinditinteresting(learn)English.4．Idon'tfeelitdifficult(understand)theSpecialEnglish.5．Allthesenoisesmadeitimpossibleforme(go)onwiththework.6．Doyouconsideritanygood(try)again?二固定用法和搭配(在空白處填入一個(gè)適當(dāng)?shù)膯卧~)1．IthinknecessaryforustolearnEnglishwell.2．Iusedtofeelitaterriblethingmymothershouldhavetodothehouseworkendlessly.3．Oursuccessdependedoniteveryteammemberplayedtheirownpartwell.4．Wehavemadeclearthatwearestronglyagainstsmokingintheoffice.5．Iwouldappreciateifyoucouldgivemeahandwithmyworktomorrow.6．Whydon'tyoubringittohisattentionyou'retooilltoworkon?7．Iseetothatshegoestoschoolontime.8．Ihateitsomeonecameinwithoutknockingthedoor.9．Ican'tanswerforitheishonest.10．Don'ttakeforgrantedthatyourparentsshoulddoeverythingforyou.三句型轉(zhuǎn)換1．Mikethinksthatitishisdutytodosomethingforthepeopleinneedofhelp.→Mikeforthepeopleinneedofhelp.2．Allthechildrenarewelltakencareofinthiskindergarten.WeoweittoMrs.Lee.→Weinthiskindergarten.3．Manypeoplethinkthatitisimportantforstudentstolearnaforeignlanguagewell.→Manypeopleaforeignlanguagewell.4．Istillbelievethatitisnecessarythatyoushouldpayavisittoyourschoolfriends.→Istillavisittoyourschoolfriends.5．Youwon'tcatchmedoingthatagain.Ihavemadeitknowntoyou.→I_youwon'tcatchmedoingthatagain.四書法與寫作請(qǐng)臨摹之后再利用課余時(shí)間背誦。提醒：①每個(gè)字母圓潤(rùn)飽滿，壓線書寫；②宜用0.5或0.7mm中性筆。Ⅰ.閱讀理解AMicroplasticsareeverywhereinourenvironment.It'shardlysurprisingthatthetinyfragmentshavealsobeenfoundinhumans.AnewstudyshowsthatAmericansareconsumingasmanyas121，000particleseachyear.Measuring50to500micronsinlength,microplasticscomefromavarietyofsources,includinglargeplasticsthatbreakdownintosmallerandsmallerpieces.Therefore,muchremainsunknownaboutthecommonexistenceofthesematerialswithinthehumanbody,aswellastheirimpactonhumanhealth.Hopingtofillinsomeofthesegaps,aresearchteamledbyKieranCox,aPhDcandidateattheUniversityofVictoria,lookedat26papersassessingtheamountofmicroplasticsincommonlyconsumedfooditems,amongwhichareseafood,sugars,salts,honey,alcoholandwater.Theteamalsoevaluatedthepotentialconsumptionofmicroplasticsthroughinhalation(吸入)usingpreviouslyreporteddataonmicroplasticconcentrationsintheairandtheEnvironmentalProtectionAgency'sreportedrespirationrates.Basedonthesedata,theresearcherscalculatedthatourannualconsumptionofmicroplasticsviafoodanddrinkrangesfrom39，000to52，000particles.Whenmicroplasticstakeninthroughinhalationaretakenintoaccount,therangejumpstobetween74，000and121，000particlesperyear.Theauthorsofthestudyfoundthatpeoplewhodrinkexclusivelyfromplasticwaterbottlesabsorbanadditional90，000microplasticseachyear,comparedto4，000amongthosewhoonlyconsumetapwater.“Thisshowsthatsmalldecisions,overthecourseofayear,reallymatterandhaveanimpact，”Coxsays.Thenewstudy,accordingtoitsauthors,wasthefirsttoinvestigate“theaccumulativehumanexposure”tomicroplastics.Butinalllikelihood,theresearchtellsonlyasmallpartoftheentirestory.Collectively,thefoodanddrinkthattheresearchersanalyzedrepresent15percentofAmericans'caloricintake.Theteamcouldnotaccountforfoodgroupslikefruits,vegetablesandgrainsbecausetheresimplyisnotenoughdataontheirmicroplasticcontent.Forthoseworriedaboutmicroplasticconsumption,cuttingdownbottledwaterisagoodplacetostart.Buttotheheartoftheproblem,wehavetostopproducingandusingsomuchplastic.1．Whatmakesitdifficulttoknowmicroplasticscommonlyexistinthehumanbody?A．Thequality. B．Thequantity.C．Theshape. D．Thesize.2．HowdidKieranCox'steamcalculatethepotentialconsumptionofmicroplastics?A．Bystudyingpapers.B．Bycomparingtheimpacts.C．Byanalyzingthedata.D．Byconductingexperiments.3．WhichofthefollowingisTRUEaccordingtothepassage?A．Drinkinglessplasticbottledwaterhelpstotakeinfewermicroplastics.B．Thestudyisamongtheearliesttoinvestigatehumanexposuretomicroplastics.C．Cox'steamgainedcomprehensiveinformationofmicroplasticstakeninbyhumans.D．Peopleconsume74，000to121，000particlesofmicroplasticsperyearfromfoodanddrink.4．Whatisthebesttitleforthepassage?A．ThePotentialProblemsofMicroplasticsB．MicroplasticsComingfromVariousSourcesC．MicroplasticsFoundWithinHumanBodiesD．TheImpactofMicroplasticsonHumanHealthBCaptured(捕獲的)carbondioxide(CO2)couldbeusedtoextract(提煉)usefulmetals(金屬)fromrecycledtechnologysuchassmartphonebatteriesratherthanjustbeingburiedunderground.Thetechniquecouldhelpmakeitmoreeconomicaltocapturethegreenhousegasbeforeitenterstheatmosphere.“IfyoualsoextractmetalsbyfillingCO2,youaddvaluetoaprocessthatisknowntobecostly，”saysJulienLeclaireattheUniversityofLyon,France.CO2isthemaincauseofmodernclimatechange,somanypeoplehaveattemptedtodeveloptechnologiestocaptureitwhenitcomesfrompowerplantsandothermajorsources.Thegascanthenbestoredunderground.Theproblemisthatsuchcarboncaptureandstorage(CCS)isexpensive.“Noonewantstopaythepriceforit，”saysLeclaire.TomakeCCSmoreappealing,Leclaire'steamhasfoundauseforthegas.HisteamcollectedCO2fromacargas,cooledit,thenpumpeditintoamixofchemicals.TheCO2combinedwiththemixtomakemanymolecules(分子)ofvariousshapesandsizes.Theteamfoundthatthisprocesscouldsortoutmixturesofmetals,becauseonemetalwoulddissolve(溶解)intheliquidwhileanotherwouldformasolid.Inaseriesofexperiments,theysuccessfullyseparatedthreekindsofmetals—allofwhichareusedinbatteries,smartphonesandcomputers.Iftheprocesscanbewidelyused,itcouldbeamoreenvironmentallyfriendlywaytorecyclebatteriesandotherelectricalequipment,saysLeclaire.Thisisnormallydoneusinghighlyreactivechemicals,whicharepotentiallypolluting.ReplacingthemwithCO2shouldleadtoamuchlowerenvironmentalpollution,hesays.OtherresearchersandcompaniesaretryingtochangecapturedCO2intousefulmaterialslikeplastics,whicharenormallyproducedfrompetrol,butthisischemicallydifficult.LeclairesayshisapproachismoreinlinewithhowCO2behavesnaturally.“Insteadofcopyingwhatweknowhowtodobetterandcheaperwithoil,let'sfindthingsyoucanonlydowithCO2，”hesays.5．Whatcanwelearnfromthefirstparagraph?A．Extractingusefulmetalsfromrecycledtechnologyiswidelyusednow.B．Usefulmetalsintheatmosphereareusedtomakesmartphonebatteries.C．Abandonedsmartphonebatteriesmayhavebeenburiedundergroundbefore.D．ThegreenhousegasCO2couldbecleanedupafterenteringtheatmosphere.6．WhyaremanypeopleattemptingtocaptureCO2?A．CO2isthemaincauseofmodernclimatechange.B．CO2canbeusedtorecyclemanyresources.C．CapturedCO2canbechangedtousefulgas.D．CO2isharmfultopeople'shealth.7．WhatbenefitcouldLeclaire'steam'sapproachbring?A．Itcouldendtheuseofplastics.B．Itcouldreduceenvironmentalpollution.C．Itcouldmakemoremetalsavailabletohumans.D．Itcouldhelpreducethecostofbatteryproduction.8．Whatisthebesttitleforthepassage?A．TheWaystoMakeSmartphoneBatteriesB．TheReasonforCapturingGreenhouseGasC．CollectingCO2IsStartingtoMakeNewProgressD．CapturedCO2CouldBeUsedtoHelpRecycleUsefulMetalsⅡ.七選五Notonlydosmart-phonesprovideunlimitedaccesstoinformation,theyprovideperfectopportunitiestomultitask(doingtwounrelatedthingsatthesametime).Anyactivitycanbeaccompaniedbymusic,selfiesorsocialmediaupdates.Ofcourse,somepeoplepickimpropertimetotextandlawmakershavesteppedin.1.________InHawaii,it'sillegaltotextorevenlookatyourphonewhilecrossingthestreet,andintheNetherlandsthey'vebannedtextingwhilebiking.2．________Soyouneedlearntoself-control.Understandinghowthebrainmultitasksandwhywefindmultitaskingsoappealingwillhelpyourealizethedangerofpullingoutyourphone.Twentystateshavebansondrivingusingahand-heldphonewhilestillallowinghands-freecalls.Yethands-freeorhand-heldmakesnodifference.3.________Therealproblemistheswitch(切換)ofattentionbetweentheconversationandroad,andthataffectsperformance.Peoplesensethisandwhenonthephonetheydriveslowerandincreasetheirfollowingdistance,buttheyarefartooconfidentandthinkthesemeasuresreducerisks.4.________Everyoneknowstextingbehindthewheelisdangerous,butlisteningtomusicorchattingwithapassengerseemssoundemandingastobe.Yetbothmeasurablyaffectdriving.Peoplemultitaskmerelybecausetheyseenoharminit;theyseebenefits.5.________Mostpeoplewillstillchoosetomultitask.Buttheyshouldbefullyawareofhowthatchoiceaffectsthemandthepotentialconsequencesforthemselvesandothers.Theyneedtopayattentiontohowmuch—orhowlittle—theyarepayingattention.A．Theymultitaskforefficiency,tofightboredomortokeepupwithsocialmedia.B．Butlegislation(法律)won'tbanallsituationsinwhichmultitaskingisunwise.C．Insteadofmultitasking,theytakemorerestbreaksandgetasocialmediafixduringabreak.D．Theydamagedrivingprocessequivalentlyasfarasexternal(外部的)dangersgo.E．However,textingwhilebikingseemssoundemandingastobeharmless.F．Forty-eightstateshavebannedtextingwhiledriving.G．Thisconfidenceisespeciallyunderstandableforverysimpletasks.Ⅲ.語(yǔ)法填空Asthecoronavirus(冠狀病毒)outbreakcontinues,manyAmericansarefearfulof1.____________(use)publictransportation.Theyalsoarelookingforways2.____________(get)exercisewithouthavingtogotoagym,aswellaswaystoenjoytheoutdoors.So,itmaynotbe3.____________(surprise)thatthepandemic(流行病)hasledtoamajorincreaseinbicyclesales.IntheUnitedStates,bicyclesatbigstoreslikeWalmarthavesoldout.Andsmallbicyclestorescannotkeepup4.____________demandfor“family-style”bicycles：thelow-cost,easy-to-ridemodels.Thebicycleindustryisseeingitsbiggestsalesincreasesincetheoilcrisisofthe1970s,saidJayTownley,5.____________industryexpert.“People...havepanicked，”Townleysaid.He6.____________(compare)thesaleofbicyclestotherushtobuyproductsliketoiletpaperatthestartofthepandemic.Theriseinbicyclesalesisnoth