2022届高中英语《统考版》一轮复习提分练:必修④ UNIT2 WORKINGTHELAND WORD版含解析.docx
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1、限时提分练(十七)必修Unit2Workingtheland.阅读理解A2021开封市高三第一次模拟Dontlikeseedsinyourtomatoes? Youmightbepleasedtoknowthatseedlessoneshavebeencreatedbygeneediting.Thiscouldcreateawiderangeofseedlessfruits, butfewmayeverbeseeninthesupermarketifregulatorsdecidetotreatgeneeditedcropsinthesamewayasgeneticallyengineered
2、 (转基因的) ones.Severalseedlessfruits, frombananastograpes, arealreadyavailable, buthavemostlyappearedbyluckratherthandesign.Andalthoughthereareafewseedlessvarietiesoftomatoes, theyvetakenresearchersmanyyearstocreate.Nowitcanbedoneveryquickly, asKeishiOsakabeatTokushimaUniversityinJapanhasshown.Histeam
3、usedtheCRISPRgeneeditingtechnologytomakefruitsdevelopeventhoughnoseedshadbeguntoform.“Wehaventtastedthemyet, butintheorytheyshouldtastethesame,”saysOsakabe.Therehavebeenafeweffortstocreateseedlesstomatoesusingearliergeneticengineeringtechniques.ThesemethodstakelongertimecomparedwithCRISPR.Some“seedl
4、ess”fruitsjusthaveverysmallseeds, andstillrequirepollination (授粉).Butcompletelyseedlessfruitsliketheeditedtomatoesdonotrequirepollinationatall.Suchplantscouldimprovefoodsecuritybyreducingourrelianceonsmallerbeepopulations, saysSaulCunninghamattheAustralianNationalUniversity.Manyfruitgrowersbuybeesto
5、pollinatetheircrops.Thereisadeficiencyforfarmers, however.Seedlessplantsusuallyhavetobegrownfromcuttings, whichinvolvesmorelaborthanplantingseeds.CRISPRcouldbeusedtodevelopothertypesoffruitthatdontrequirepollinators, aswellasintroducebeneficialmutations (突变), saysOsakabe.Buttomakeitontothesupermarke
6、t, geneeditedplantsmayhavetomeetthesamestandardsasgeneticallyengineeredplants, whichwouldgreatlyincreasecosts.Somearguethatsincegeneeditingisusedtointroducemutationsalreadyfoundinsomeoftheplantsweeat, itshouldnotrequiresuchstrictregulations.1Whathasbeentheproblemwithseedlesstomatoescreatedinthepast?
7、ATheirtastewasnotverygood.BTheystillhadafewbigseeds.CTheirgenescouldnotberecognized.DTheytookquitealongtimetocreate.2WhatdidKeishiOsakabesteamdo?ATheyeditedtomatoesgenes.BTheychangedthetasteoftomatoes.CTheymadeseedlessbananasandgrapes.DTheycreatedgeneticallyengineeredtomatoes.3WhyisCRISPRbetterthanp
8、reviousmethods?AItwillstillrequirepollination.BItwillremainunaffectedwithoutbees.CItwillreducepeoplesrelianceonfoodsecurity.DItwillmakemanygrowersbuybeesforpollination.4Whatdoestheunderlinedword“deficiency”inParagraph7probablymean?ADanger.BDisadvantage.CBenefit.DSolution.B2021山西省高三第一次测试Morethanhalfo
9、fworkingAfricanshavejobsinagriculture, butinadequatetoolsandalackofinvestmenthaveleftthecontinentsmostlysmallfarmsstrugglingtofeedagrowingpopulation.Now, awaveoftechnologicalsolutionsisaimingtohelp.EstherUsman, fromKadunaState, NorthwestNigeria, hasbeengrowingcornsinceshewas17, whenshedroppedoutofsc
10、hooltosupportherfamilyafterherfathersdeath.Twodecadeson, shewasstruggling.Sheoftenlayawakeatnightworryingabouthowtofeedandeducateherchildren.Attimes, moneyransolowthatshewasforcedtosellhercropforabit.“Ifmyfarmwasaffectedbypests, Icouldonlyaffordtobuyasmallamountofpesticide, whichwasusuallynoteffecti
11、ve.Andcorninstorageisoftenlosttomoisture (潮气) andpests, whichisabigproblem,”saysUsman, now38.In2017, UsmanjoinedBabbanGona, asocialenterprisethatactsasafarmerspartnerandoffersfarmerscredit, trainingandothersupport.Itwaslaunchedin2012with102farmers, andnowworkswith20,000.FieldofficersemployedbyBabban
12、Gonaphotographitsfarmersfields.Anappreviewsthephotos, evaluatingthegermination (发芽) rateandseeingifthesoilneedsnutrientsbasedonleafcolors.Thefieldofficersstepintowarnfarmersofanyproblemstheyfindandadviseonpossiblesolutions.Somefarmershaveincreasedtheiryields (产量) by50percent.Oncethecornisharvested,
13、BabbanGonastoresitinsealedcontainersandaimstosellitattherighttimetomaximizethefarmersprofits.ThepaymentsUsmanreceivesfromBabbanGonaallowhertoinvestinacow, tobuynewclothesforherfamily, andtobuildahouse.5WhatcanUsmanbedescribedinherearlylife?AActivebutunskilled.BResponsibleandwise.CHardworkingbutpenni
14、less.DPainedandunambitious.6WhatwasthechallengeforUsmanafterharvestingcorn?ASellingit.BReservingit.CKillingpestsonthefarm.DFeedingandeducatingherchildren.7HowdothefieldofficersworkinBabbanGona?ATheyevaluatethephotosofcrops.BTheylendmoneytoneedyfarmers.CTheysendphotostakenbyfarmerstoanapp.DTheyservea
15、sabridgebetweenfarmersandit.8Whatdoesthetextmainlytalkabout?ATechnologyhelpsAfricanfarmerslivebetter.BAcompanysupportsAfricanfarmers.CFarminginAfricaisfacedwithadifficultsituation.DAfricanfarmersinventsmartfarming.七选五2021武汉市高中毕业生供题Ithadlongbeentroublingalittleboythathisdeskmatecouldrank1stintheclass
16、everytimewhilehefailedto: heonlyranked21st.Athome, heaskedhismom, “Mom, amImorestupidthanothers? IfeelIamashardworkingashim, buthowcomeIalwaysfallbehind?”_1_Inanothertest, theboyranked15th, andhisdeskmateremained1st.Backhome, heraisedthesamequestion._2_However, wasthisanswerinhersonsbestinterest? Th
17、ankgoodnessshedidnotopenhermouth.Thereweretimesshewantedtotellhim, “YourfatherandIusedtobeoutstanding.Whyarentyoujustasclever?”Butshestoppedbecauseshefeltitwascrueltoblamehimandthatsheneededabetteranswer._3_Toreducetheburdenonhersonwhowassufferingfromthepainsofunsatisfyinggradesandrankings, Momdecid
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