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1、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,theg
2、roupofscientistssaidtheyhadfoundimportantbiologicalqualitiesinsomebatspecies.Thegroupstudiedbatchromosomes(染色体),alineofgenesfoundinthenucleus(核)ofcells.Thescientistsweremostinterestedinpartsconnectedtotheendsofthechromosomes.Theyarecalledtelomeres(端粒).Telomeresprotecttheendsofchromosomes,whichshorte
3、neachtimeacelldivides.Scientistsbelievethisshorteningprocesscausescellstobreakdown.AreportonbatswaspublishedthismonthinthejournalScienceAdvances.AmongtheleadersofthestudywasEmmaTeeling,abiologistwithUniversityCollegeDublininIreland.Teelingsaidstudyinglong-livingmammalsthathavedevelopedwaystofightagi
4、ng “isanotherwaytoprovethemolecular(分子)basisofextended healthlength.” Sheaddedthatstudyingbatsmadescientistsabletolearnmoreabouttheprocesses “thatdrivehealthyaging.”TheEuropeanresearchersstudied493batsfromfourbatspecies.Thegroupusedinformationthathadbeengatheredovermorethan60years.Oftheseanimals,the
5、greatermouse-earedbatgenerallylivedthelongest,anaverageof37years.Thescientistssaidthisandarelatedspecies,whicharegroupedtogetherunderthenameMyotis,hadtelomeresthatdidnotshortenwithage.AnotherMyotisbatholdstherecordforoldestage,reaching41years.Thescientistsfindingssuggestthatthesebatscellshavetheabil
6、itytokeepandrepairtheirtelomeres.This,theysaid,helpsguardagainsttheagingprocess.Basedonitsbodysize,abatlikethegreatermouse-earedbatwouldbeexpectedtolivefouryears.But,thesemammalshavebeenfoundtolivenearly10timeslongerthanthat.ThescientistsfoundthatEighteenofthesearebats.TheonlyexceptionisanunusualAfr
7、icanrodent,thenakedmolerat.1.WhichsentencecanbeputattheendofParagraph3?A.Thismakesscientistsabletostudybats.B.Thatswhybatscanflyagreatdistance.C.Theysaythisiswhatcausesaging.D.Theydiscoverthecellsconnectedtohumans.2.Whydosomespeciesofbatsliveaverylongtime?A.Becausetheyhavealineoflong-livinggenesouto
8、fthecells.B.Becausetheircellshavetheabilitytokeepandrepairtheirtelomeres.C.Becausetheyhaveanotherabilitytolivelongerwithoutanyfoodorwater.D.Becausetelomeresprotecttheendsofchromosomestostopcellsdividing.3.Theunderlinedword “that” refersto.A.fouryearsB.bodysizeC.theagingprocessD.theabilitytorepair4.W
9、hatsthebesttitleofthepassage?A.DifferencesBetweenLong-livingAnimalsB.AScienceReportonChromosomesC.DoBatsHoldtheSecrettoLongLife?D.AreHumansandBatsSimilarinProtectingThemselves?.2017绍兴完形填空AsanewteacheratDoullPrimarySchoolinDenver,KyleSchwartzthoughtofasimplewaytogettoknowherthirdgraders,mostofwhomcam
10、efrom5families.Sheaskedthemtocompletethe6 “Iwishmyteacherknew” andsharesomethingaboutthemselves.Their7answersgavetheteacherachancetounderstandherstudentsdifficulties. “IwishmyteacherknewIhavenopencilstodomyhomework,” 8onechild. “Iwishmyteacherknewsometimesmyreadinghomeworkisnotsigned(签名),becausemymo
11、misnot9alot,” wroteanother.Somesharedhopeforthe10, “IwishmyteacherknewthatIwanttogotocollege.”“Somenotesarereallyheartbreaking,” SchwartztellsABCNews. “Icare11abouteachofmystudentsandIdontwantthemtobepoorforever,” sheexplains. “Ihopedtoknow12Icouldbettersupportthem.SoI13toletthemtellmewhatIneededtok
12、now.ThatwaswhyIcreatedthefill-in-the-blankexercise.”14thethirdgraderswereallowedtoansweranonymously(匿名地),mostwantedtoincludenames.Andsomewereevenexcitedtoreadtheirnotesoutloud,15oneshygirlwhobravelysaidthatshewaslonely. “Aftershetoldtheclass, Idonthavefriendsto16me, Iwasworriedwhattheywoulddo,” Schw
13、artztellsUsWeekly. “However,Ifeltencouragedtoseehowmuchsupporttheotherkidsoffered17.Theyinvitedhertoplayatbreakandsitwiththematlunch.Yousee,18haveanunusualabilitytoexpressempathy(同情).”“Theresultshavebeen19,” saysSchwartz. “Itspeakstotheimportanceofgivingpeopleavoiceandreallylisteningtothem.”5.A.trad
14、itionalB.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.forgo
15、tD.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
