课时训练(四)Units58(七下)(限时:30分钟).单项选择1.2019原创IthinktheHUAWEIP20worksasastheiPhone8.Ilikeitverymuch.A.goodB.wellC.badD.badly2.2017黄冈Ourclassroomissoclean.Whoscleanedit,LiFei?Sorry,Idontknow.Ithinkdiditbeforeclass.A.somebodyB.nobodyC.everyoneD.anyone3.2018黄冈DidQingdaoshowtotheworldduringtheSCOSummit(上海合作组织峰会)?Sure!Herbeauty,hightechnologyandrapiddevelopment.A.somethingspecialB.anythingspecialC.specialsomethingD.specialanything4.2018淮安Thegirlhastohergrandmabecauseherparentsareworkinginanothercity. A.lookatB.lookintoC.lookthroughD.lookafter5.2018德阳Chinahaspopulationintheworld. A.bigB.thebiggerC.thebiggestD.biggest6.2018上海MrZhouisgoodatcookingandhehasdecidedhisownrestaurant.A.openB.openedC.toopenD.opening7.2018连云港Howamazingthisrobotis!Wow,ithasvideocamerasinitseyes,soit“see”andinteractwithpeople. A.mayB.canC.mustD.should8.Whatsyourproblem?IhavetroublethesewordsinEnglish.A.sayB.sayingC.tospeakD.speaking9.2018河北Thebreadisreallydelicious.Thankyou.Iitmyself.A.makeB.madeC.willmakeD.ammaking10.2018宿迁fineweatheritis!Shallwegohikinginthehills?Whynot?A.WhatB.WhataC.HowD.Howa.2018扬州二模完形填空Atthepicnic,TomandBeckyvisitedthecaveswiththeotherchildren.However,theyhadlefttheirfriendsbehindbeforetheynoticedthat.Theytooktheir11andwalkeddownasmalltunnel.Theymadesome12onthewall,whichwouldhelpthemfindtheirwayback.Alargenumberofbatswerehangingontheroof.Thebatsdidnotlikethecandlelightand13thechildren.TomandBeckywereso14thattheykeptrunninguntiltheyescapedfromthebats.“ItisalongtimesinceI15theothers.Letsgoback,Tom,”saidBecky.Theytriedtofindawaybackwithoutgoingthroughthecavewithbats.16,theyfailed.Bothchildrenbegantoshout17,butnobodyanswered.Beckybegantocry,“Tom,werelost.Well18getoutofthisawfulplace!”Tomtriedto19herandgavehersomecakeshehadtakenfromthe20.Theywentonshoutingforhelp,withoutanyreplyreachingthem. Suddenly,theyheardsomebodyshoutingfaraway.Theyshoutedbackandtriedtogetcloser,buttherewasabigholeaheadofthemandtheycouldnotgo21it.Theshoutingwentfurtherawayuntilitwasgone. Tomdidnt22hope.Hetriedanothertunnel.Withallhis23,hegotBeckyandhimselfoutatlast24hewasveryhungry,tiredandfrightened.Theyhadbeeninthecaveforthreedays.TomsawaboatontheriverandaskedthepeopleinittotakethemtoSt.Petersburg.Thepeopleinthetownwereveryhappytoseethe25children.Bothofthemwereveryweakandhadtostayinbedforafewdaystogetstrongagain.Whatafantasticexperienceforthetwo!Lifewillneversaynotothosewithgreatcourage!11.A.foodB.drinksC.candlesD.flashlights12.A.picturesB.notesC.marksD.colours13.A.attackedB.admiredC.attractedD.avoided14.A.pleasedB.frightenedC.nervousD.satisfied15.A.caughtB.foundC.heardD.followed16.A.UnpleasantlyB.UnluckilyC.UnexpectedlyD.Uncertainly17.A.insurpriseB.withexcitementC.inconfidenceD.withfear18.A.surelyB.neverC.seldomD.proudly19.A.stopB.refuseC.pleaseD.calm20.A.caveB.tunnelC.picnicD.boat21.A.pastB.downC.upD.through22.A.giveinB.giveupC.giveoutD.giveaway23.A.effortB.effectC.influenceD.information24.A.ifB.althoughC.unlessD.because25.A.excitedB.strictC.seriousD.lost.2018连云港阅读理解Batsaretheonlymammalsthatcanflyagreatdistance,buttheyhaveanotherability.Manybatslivealongertimethanotheranimalsoftheirsize.Europeanresearchersarestudyingbatstounderstandwhytheylivesolong.Theyhopetomakediscoveriestofighttheagingprocess(过程)inhumanbeings.Lastweek,thegroupofscientistssaidtheyhadfoundimportantbiologicalqualitiesinsomebatspecies.Thegroupstudiedbatchromosomes(染色体),alineofgenesfoundinthenucleus(核)ofcells.Thescientistsweremostinterestedinpartsconnectedtotheendsofthechromosomes.Theyarecalledtelomeres(端粒).Telomeresprotecttheendsofchromosomes,whichshorteneachtimeacelldivides.Scientistsbelievethisshorteningprocesscausescellstobreakdown.AreportonbatswaspublishedthismonthinthejournalScienceAdvances.AmongtheleadersofthestudywasEmmaTeeling,abiologistwithUniversityCollegeDublininIreland.Teelingsaidstudyinglong-livingmammalsthathavedevelopedwaystofightagingisanotherwaytoprovethemolecular(分子)basisofextendedhealthlength.Sheaddedthatstudyingbatsmadescientistsabletolearnmoreabouttheprocessesthatdrivehealthyaging.TheEuropeanresearchersstudied493batsfromfourbatspecies.Thegroupusedinformationthathadbeengatheredovermorethan60years.Oftheseanimals,thegreatermouse-earedbatgenerallylivedthelongest,anaverageof37years.Thescientistssaidthisandarelatedspecies,whicharegroupedtogetherunderthenameMyotis,hadtelomeresthatdidnotshortenwithage.AnotherMyotisbatholdstherecordforoldestage,reaching41years.Thescientistsfindingssuggestthatthesebatscellshavetheabilitytokeepandrepairtheirtelomeres.This,theysaid,helpsguardagainsttheaging