从2014考研政治真题中透视2015复习重点

>>>全国各地2017年考研报考点汇总>>>2017年考研时间、研究生考试时间安排>>>2017年考研大纲下载及解析汇总>>&g

>>>全国各地2017年考研报考点汇总>>>2017年考研时间、研究生考试时间安排>>>2017年考研大纲下载及解析汇总>>&g

【导语】“一分耕耘一分收获”，十载寒窗铸直了你挺拔的身姿，丰富的知识拉远你睿智的目光，岁月的流逝反衬出你娇美的容颜，奋斗的道路上，你的身影显得无比的昂扬。你与每一个成功拥抱，你的汗水在七彩的生活里闪光!祝愿你考试一帆风顺!以下是无忧考网为大家整理的《历年考研英语模拟试题及答案：阅读篇》供您查阅。Scientistshaveknownsince1952thatDNAisthebasicstuffofheredity.They'veknownitschemicalstructuresince1953.TheyknowthathumanDNAactslikeabiologicalcomputerprogramsome3billionbitslongthatspellsouttheinstructionsformakingproteins，thebasicbuildingblocksoflife.Buteverythingthegeneticengineershaveaccomplishedringthepasthalf-centuryisjustapreambletotheworkthatCollinsandAndersonandlegionsofcolleaguesaredoingnow.CollinsleadstheHumanGenomeProject，a15-yearefforttodrawthefirstdetailedmapofeverynookandcrannyandgeneinhumanDNA.Anderson，whopioneeredthefirstsuccessfulhumangene-therapyoperations，isleadingthecampaigntoputinformationaboutDNAtouseasquicklyaspossibleinthetreatmentandpreventionofhumandiseases.Whattheyandotherresearchersareplottingisnothinglessthanabiomedicalrevolution.LikeSiliconValleypiratesreverse-engineeringacomputerchiptostealacompetitor'ssecrets，geneticengineersaredecodinglife'smolecularsecretsandtryingtousethatknowledgetoreversethenaturalcourseofdisease.DNAintheirhandshasbecomebothablueprintandadrug，apharmacologicalsubstanceofextraordinarypotencythatcantreatnotjustsymptomsorthediseasesthatcausethembutalsotheimperfectionsinDNAthatmakepeoplesusceptibletoadisease.Andthat'sjustthebeginning.Forallthefeveredworkbeingdone，however，scienceisstillfarawayfromtheBraveNewWorldvisionofengineeringaperfecthuman—orevenaperfecttomato.Muchmoreresearchisneededbeforegenetherapybecomescommonplace，andmanydiseaseswilltakedecadestoconquer，iftheycanbeconqueredatall.Intheshortrun，themostpracticalwaytousethenewtechnologywillbeingeneticscreening.DoctorswillbeabletodetectallsortsofflawsinDNAlongbeforetheycanbefixed.Insomecasestheknowledgemayleadtotreatmentsthatdelaytheonsetofthediseaseorsoftenitseffects.Someonewithageneticpredispositiontoheartdisease，forexample，couldfollowalow-fatdiet.Andifscientistsdeterminethatavitalproteinismissingbecausethegenethatwassupposedtomakeitisdefective，theymightbeabletogivethepatientanartificialversionoftheprotein.Butinotherinstances，almostnothingcanbedonetostoptheravagesbroughtonbygeneticmutations.(409words)1.ItcanbeinferredfromthetextthatCollinsandAndersonandlegionsofcolleagues_____.[A]knowthathumanDNAactslikeabiologicalcomputerprogram[B]havefoundthebasicbuildingblocksoflife[C]haveaccomplishedsomegeneticdiscoveryringthepasthalf-century[D]aremakingabreakthroughinDNA2.CollinsandAndersonarecitedinthetexttoindicateallthefollowingEXCEPTthat______.[A]time-consumingeffortisneededtoaccomplishthedetailedmapofinhumanDNA[B]humangene-therapyoperationsmaybeappliedtothepatients[C]gene-therapynowisalreadygenerallyusedtothetreatmentandpreventionofhumandiseases[D]informationaboutDNAmaybeusedinthetreatmentandpreventionofhumandiseases3.Theword“pirate”(line2，paragraph3)means______.[A]onewhorobsatseaorplundersthelandfromthesea[B]onewhomakesuseoforreprocestheworkofanotherwithoutauthorization[C]totake(something)bypiracy[D]tomakeuseoforreproce(another'swork)withoutauthorization4.Wecandrawaconclusionfromthetextthat_____.[A]engineeringaperfecthumanisnotfeasibleforthetimebeing[B]it‘simpossibleforscientiststoengineeraperfecttomato[C]manydiseaseswillneverbeconqueredbyhumanbeings[D]doctorswillbeabletocureallsortsofflawsinDNAinthelongrun5.Thebesttitleforthetextmaybe______.[A]DNAandHeredity[B]TheGeneticRevolution[C]ABiomedicalRevolution[D]HowtoApplyGeneticTechnology词汇注释stuff物质preamble开端nookandcranny排列potency力量susceptible易受感染的predisposition易患病的体质难句讲解1.TheyknowthathumanDNAactslikeabiologicalcomputerprogramsome3billionbitslongthatspellsouttheinstructionsformakingproteins，thebasicbuildingblocksoflife.[简析]本句话的主干是“Theyknowthat…”。they指的是前面句子中提到的scientists;第一个引导的是宾语从句，some3billionbitslong修饰computerprogram，第二个that也修饰computerprogram;thebasicbuildingblocksoflife是在解释proteins.2.Anderson，whopioneeredthefirstsuccessfulhumangene-therapyoperations，isleadingthecampaigntoputinformationaboutDNAtouseasquicklyaspossibleinthetreatmentandpreventionofhumandiseases.[简析]本句话的主干是“Andersonisleadingthecampaign…”。Who引导的非限定性定语从句，修饰Anderson;toputinformation…短语修饰campaign，其中的touse…作目的状语。3.DNAintheirhandshasbecomebothablueprintandadrug，apharmacologicalsubstanceofextraordinarypotencythatcantreatnotjustsymptomsorthediseasesthatcausethembutalsotheimperfectionsinDNAthatmakepeoplesusceptibletoadisease.[简析]本句话的主干是“DNAhasbecomebothablueprintandadrug”。intheirhands修饰DNA;apharmacologicalsubstance…是在解释前面的drug，其中的第一个that引导的定语从句修饰pharmacologicalsubstance;第二个that引导的定语从句修饰imperfections.4.Andifscientistsdeterminethatavitalproteinismissingbecausethegenethatwassupposedtomakeitisdefective，theymightbeabletogivethepatientanartificialversionoftheprotein.[简析]本句话的主干是“…theymightbeabletogivethepatientanartificialversionoftheprotein”。If引导的是条件状语从句，其中的第一个that引导的是宾语从句，because引导的时原因状语从句;第二个that引导的定语从句修饰gene.

>>>全国各地2017年考研报考点汇总>>>2017年考研时间、研究生考试时间安排>>>2017年考研大纲下载及解析汇总>>&g

>>>全国各地2017年考研报考点汇总>>>2017年考研时间、研究生考试时间安排>>>2017年考研大纲下载及解析汇总>>&g

>>>全国各地2017年考研报考点汇总>>>2017年考研时间、研究生考试时间安排>>>2017年考研大纲下载及解析汇总>>&g

>>>全国各地2017年考研报考点汇总>>>2017年考研时间、研究生考试时间安排>>>2017年考研大纲下载及解析汇总>>&g

>>>全国各地2017年考研报考点汇总>>>2017年考研时间、研究生考试时间安排>>>2017年考研大纲下载及解析汇总>>&g

>>>全国各地2017年考研报考点汇总>>>2017年考研时间、研究生考试时间安排>>>2017年考研大纲下载及解析汇总>>&g