2020届长沙市第六中学高三英语一模试卷及参考答案

发布时间：2023-03-21 18:33:31

2020届长沙市第六中学高三英语一模试卷及参考答案
第一部分阅读（共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项
A
MywifeHilaryandIwereonthebeach,withthreeofourchildren,takingpicturesofshorebirdsnearourhomeinAlaskawhenwesawabear.Thebearwasthinandsmall,movingaimlessly.
Justafewminuteslater,Iheardmydaughtershouting,“Dad!Thebearisrightbehindus!"Anaggressivebearwillusuallyrushforwardtofrightenawayitsenemybutwouldsuddenlystopatthelastminute.Thisonewassilentanditsearspinnedbackthesignofananimalthatisgoinginforthekill.AnditwasacoldAprilday.Thebearbehavedabnormally,probablybecauseofhunger.
Iheldmycameratripod(三脚架inbothhandstoformabarrierasthebearrushedintome.Itshugeheadwaslevelwithmychestandshoulders,andthetripodstuckacrossitsmouth.ItbitdownandIfoundmyselfsupportingitsweight.Iknew1wouldnotbeabletoholditforlong.
Evenso,thiswasafightIhadtowin:Iwasallthatstoodbetweenthebearandmyfamily,whowouldstandlittlechanceofrunningfasterthanabrownbear.
Thebearhitatthecamera,cuttingitoffthetripod.Iraisedmyleftarmtoprotectmyface;thebeastheldtightlyonthetripodandpresseditintomyside.Myarmcouldnotmove,andIsensedthatmybonesweregoingtobreak.
Drawingbackmyfreehand,IstruckthebearashardasIcouldforfivetosixtimes.ThebearopeneditsmouthandIgraspeditsfur,tryingtopushitaway.Iwasactuallywrestlingwiththebearatthispoint.Then,assuddenlyasithadbegun,thefightended.Thebearmovedbacktowards-theforest,beforereturningforanotherattackthefirsttimeIfeltpanic.
Obviouslysatisfiedthatwecausednofurtherthreat,thebearmovedoff,destroyingafenceasitwent.Myarmwasinjured,buttheoutcomeforuscouldhardlyhavebeenbetter.I'mproudthatmyfamilyremainedclear-headedwhenpaniccouldhaveledtoaverydifferentoutcome.1.Howdidthewriterfeelwhenfacedwiththebrownbear?A.Fearfulbutconfident.B.Nervousbutbrave.C.Upsetbutdetermined.D.Awfulbuthopeful.2.Thebearfinallywentawayafterit

A.gotinjuredB.feltsafe
C.foundsomefoodD.tookawaythecamera3.Whatdoestheauthorwanttotellus?A.Weshouldkeepcalmwhentroublescome
B.Weshouldrisetothechallengewhenfacedwithdifficulties.C.Weshouldnotriskourselvesinsomedangerousareas.
D.Weshouldlearntotakeadvantageofanythingathandwhenintrouble.
B
Ifyou'veeverhadadog,youknowjusthowdeepaconnectionyoucandevelopwith“man'sbestfriend”.Butadog'slifeismuchshorterthanhumans,about12to15yearslong,whichmeanseverydogownerhastogothroughtheheart­breakingmomentwhentheirlovingpetpassesaway.
Whynotmakeacloneofthatdogthen?ThisisthesolutionofferedbyaSouthKoreancompany,SooamBiotechResearchFoundation.Thecompanyhasalreadysuccessfullyclonedatleast400dogs,mostlyforUScustomers,eversinceitpioneeredthetechniquein2005.Now,SooamBiotechhasintroduceditsbusinesstoUKdogownersaswell,offeringthemdogsthatlookjustliketheirlostones.
Tocloneadog,researchersfirstneedtotakeaskincellfromalivingdogoronethathasjustdied.Meanwhile,anotherdogisselectedtosupplyanegg.ResearchersthenreplacetheDNAintheeggwiththatfromtheskincellandimplanttheeggintothewomb(子宫ofafemaledog.Theegggrowsintoapuppyoverthefollowingtwomonths.Thewholeprocesstakeslessthanaday,butitcomesatashockinglyhighprice—around￡63,000.Butifyoucan'tafforditnow,youcanalsosavethecellinalaboratoryandaccessitatalaterdate.
However,magicalascloningmightsound,thereisnoguaranteethatthecloneddogwillbeaperfectcopyoftheoriginalone.Justlikeidenticaltwinsofhumans,theysharetheexactlysameDNAbuttherewillstillbesmalldifferencesbetweenthem.“ThespotsonaDalmatian(斑点狗clonewillbedifferent,forexample”InsungHwang,headofSooamBiotech,toldTheGuardian.
Dogownerswillalsohavetoacceptthefactthatpersonalityisnot“cloneable”.Apartfromgenes,personalityisalsodeterminedbyupbringingandenvironment,whicharebothrandomelementsthatcloningtechnologiessimplycannotovercome,ProfessorTomKirkwoodatNewcastleUniversity,UK,toldTheTelegraph.
Perhapsbringingourdogsbackbycloningisnotthebestwaytorememberthemafterall.Kirkwood,adogownerhimself,pointedout,“Animportantaspectofourrelationshipwiththemiscomingtotermswiththepainoflettinggo.”

2020届长沙市第六中学高三英语一模试卷及参考答案

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