浙江省杭州市2019年中考英语一轮复习课时训练 03Units1_4七下课件

课时训练(三)Units1-4(七下)(限时:30分钟).2018·连云港阅读理解Batsaretheonlymammalsthatcanflyagreatdistance,buttheyhaveanotherability.Manybatsliveaverylongtimeforananimaltheirsize.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-livingmammalsthathavedevelopedwaystofightaging “isanotherwaytoprovethemolecular(分子)basisofextended healthlength.” Sheaddedthatstudyingbatsmadescientistsabletolearnmoreabouttheprocesses “thatdrivehealthyaging.”TheEuropeanresearchersstudied493batsfromfourbatspecies.Thegroupusedinformationthathadbeengatheredovermorethan60years.Oftheseanimals,thegreatermouse-earedbatgenerallylivedthelongest,anaverageof37years.Thescientistssaidthisandarelatedspecies,whicharegroupedtogetherunderthenameMyotis,hadtelomeresthatdidnotshortenwithage.AnotherMyotisbatholdstherecordforoldestage,reaching41years.Thescientistsfindingssuggestthatthesebatscellshavetheabilitytokeepandrepairtheirtelomeres.This,theysaid,helpsguardagainsttheagingprocess.Basedonitsbodysize,abatlikethegreatermouse-earedbatwouldbeexpectedtolivefouryears.But,thesemammalshavebeenfoundtolivenearly10timeslongerthanthat.ThescientistsfoundthatEighteenofthesearebats.TheonlyexceptionisanunusualAfricanrodent,thenakedmolerat.1.WhichsentencecanbeputattheendofParagraph3?A.Thismakesscientistsabletostudybats.B.Thatswhybatscanflyagreatdistance.C.Theysaythisiswhatcausesaging.D.Theydiscoverthecellsconnectedtohumans.2.Whydosomespeciesofbatsliveaverylongtime?A.Becausetheyhavealineoflong-livinggenesoutofthecells.B.Becausetheircellshavetheabilitytokeepandrepairtheirtelomeres.C.Becausetheyhaveanotherabilitytolivelongerwithoutanyfoodorwater.D.Becausetelomeresprotecttheendsofchromosomestostopcellsdividing.3.Theunderlinedword “that” refersto. A.fouryearsB.bodysizeC.theagingprocessD.theabilitytorepair4.Whatsthebesttitleofthepassage?A.DifferencesBetweenLong-livingAnimalsB.AScienceReportonChromosomesC.DoBatsHoldtheSecrettoLongLife?D.AreHumansandBatsSimilarinProtectingThemselves?.2017·绍兴完形填空AsanewteacheratDoullPrimarySchoolinDenver,KyleSchwartzthoughtofasimplewaytogettoknowherthirdgraders,mostofwhomcamefrom5families.Sheaskedthemtocompletethe6 “Iwishmyteacherknew” andsharesomethingaboutthemselves. Their7answersgavetheteacherachancetounderstandherstudentsdifficulties. “IwishmyteacherknewIhavenopencilstodomyhomework,” 8onechild. “Iwishmyteacherknewsometimesmyreadinghomeworkisnotsigned(签名),becausemymomisnot9alot,” wroteanother.Somesharedhopeforthe10, “IwishmyteacherknewthatIwanttogotocollege.” “Somenotesarereallyheartbreaking,” SchwartztellsABCNews. “Icare11abouteachofmystudentsandIdontwantthemtobepoorforever,” sheexplains. “Ihopedtoknow12Icouldbettersupportthem.SoI13toletthemtellmewhatIneededtoknow.ThatwaswhyIcreatedthefill-in-the-blankexercise.” 14thethirdgraderswereallowedtoansweranonymously(匿名地),mostwantedtoincludenames.Andsomewereevenexcitedtoreadtheirnotesoutloud,15oneshygirlwhobravelysaidthatshewaslonely. “Aftershetoldtheclass, Idonthavefriendsto16me, Iwasworriedwhattheywoulddo,” SchwartztellsUsWeekly. “However,Ifeltencouragedtoseehowmuchsupporttheotherkidsoffered 17.Theyinvitedhertoplayatbreakandsitwiththematlunch.Yousee,18haveanunusualabilitytoexpressempathy(同情).” “Theresultshavebeen19,” saysSchwartz. “Itspeakstotheimportanceofgivingpeopleavoiceandreallylisteningtothem.” 5.A.traditionalB.friendlyC.poorD.small6.A.postcardB.noteC.letterD.diary7.A.honestB.politeC.usualD.right8.A.suggestedB.copiedC.repeatedD.wrote9.A.freeB.carelessC.famousD.angry10.A.societyB.courseC.researchD.future11.A.secretlyB.deeplyC.nervouslyD.directly12.A.whereB.whyC.howD.when13.A.decidedB.refusedC.forgotD.learned14.A.UnlessB.ThoughC.BecauseD.Once15.A.likeB.fromC.againstD.except16.A.lookforB.talkaboutC.dependonD.playwith17.A.himB.youC.herD.me18.A.childrenB.teachersC.parentsD.reporters19.A.boringB.surprisingC.worryingD.relaxing.2018·盐城改编语法填空阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。Over2,000yearsago,inChina,therelivedaboycalledConfucius.Whenhewasonlythree,hisfather20.(die).Hismotherwasverypoor.Inthosedayspeoplehadtopaytogotoschoolandhismotherdidnothaveenoughmoney21.(send)him. AsConfuciusgrewuphewantedtolearnthings.Sohedecided