小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com第07讲阅读理解说明文目录01模拟基础练【题型一】科普类说明文的考查【题型二】动植物介绍类说明文的考查【题型三】社会文化类说明文的考查02重难创新练03真题实战练题型一科普类说明文的考查1.（23-24高三·江西赣州·期中）In2022,aNewZealandwomanbecamethefirsttoreceiveagene-editingtreatmenttopermanentlylowerhercholesterol(胆固醇).Thewomanhadheartdisease,alongwithaninheritedriskforhighcholesterol.Butscientistsbehindtheexperimentaltreatmentareconsideringhowitcouldhelpprettymuchanyone.ThetrialisapotentialturningpointforCRISPR,theeditingtooltheyused.Sincethetechnologywasfirstprogrammedtoeditgenomes(基因组)aboutadecadeago,we’veseenCRISPRfromscientificlabsmademuchprogress.Butthefirstexperimentaltreatmentshavefocusedonraregeneticdisorders.Theyareworkingonmorepossibilitiestreatingcommondiseaselikehighcholesterol.Thecholesterol-loweringtreatment,developedbyVerveTherapeutics,reliesonaformofgeneeditingcalledbaseediting,or“CRISPR2.0”.It’samoretargetedapproach.Insteadofsimplymakingcutstoshutoffspecificgenes,scientistscannowexchangeasingleDNAbaseforanother.Intheory,thisshouldbesaferbecauseyou’relesslikelytocutanimportantgenebymistake,andyoucanbelesslikelytomakemistakesthatmayoccurwhenDNArepairsitselfafterbeingcut.AnevennewerformofCRISPRcouldtakethingsfurtherstill.PrimeEditing—or“CRISPR3.0”—allowsscientiststoputchunks(块)ofDNAintoagenome.Ifitworksinpeople,itcouldletscientistsreplacedisease-小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.comcausinggenes.Together,thesenewerformsofCRISPRcouldbroadenthepossibilitiesofgeneeditingtotakeonmanyconditions—notallofthemgenetic.Someday,peoplemayhavetheoptiontoaddgenesthoughttoprotectagainsthighbloodpressure,orcertaindiseases,totheirgeneticcode.AllCRISPRtreatmentsareexperimentalatthispoint,andwedon’tknowifthey’resafe.Someargueweshouldfocusontreatingthosewithseverediseasesinthemeantime.ButifthesenewformsofCRISPRdowork,theycouldhelpmanyothers.1．Whatarescientistsfocusingoninthegene-editingtreatment?A．Itsgreatsuccess.B．Itswiderapplication.C．Itsimmediateeffects.D．Itstargetpatients.2．WhydoestheauthorthinkthatCRISPR2.0istheoreticallysafer?A．Itcanshutoffspecificgenes.B．Itcanavoidpotentialerrors.C．It’slikelytoreduceDNAbasedamage.D．Itprovidesprotectionforthegenome.3．WhatcouldbetheinnovativepracticeofPrimeEditing?A．Makingcutstoshutoffspecificgenes.B．Providingtreatmentforgeneticdiseases.C．ExchangingasingleDNAbaseforanother.D．Takingtheplaceofdisease-causinggenes.4．Whatcanbeinferredfromthetext?A．CRISPRtreatmentshaven’tenteredhumantrials.B．Primeeditingisbeingtestedinthescientificlab.C．Primeeditingtargetsdiseasescausedbygeneticdisorders.D．Verve’scholesterol-loweringtreatmentsareapprovedforuse.【答案】1．B2．B3．D4．B【导语】本文是一篇说明文。文章介绍了科学家通过研发基因编辑工具CRISPR不断更新的三种形式，用于治疗疾病，并探索更加广泛运用的可能性。1．细节理解题。根据第二段中的“Butthefirstexperimentaltreatmentshavefocusedonraregeneticdisorders.Theyareworkingonmorepossibilitiestreatingcommondiseaselikehighcholesterol.(但首批实验性治疗主要针对罕见的遗传疾病。他们正在研究更多治疗常见疾病的可能性，比如高胆固醇。)”可知，...