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Thepolicemancautionedusabouttheicyroadsaftertheheavysnowfalllastnight.
IcyroadsandpoorvisibilityarefamiliarhazardsintheMidwest.
Theyagreedto{{U}}modify{{/U}}theirpolicy.
Somethingsweknowaboutlanguage Manythingsaboutlanguageareamysteryandmanywillalwaysremainso.Butsomethingswedoknow. Firstweknowthatallhumanbeingshavealanguageofsomesort.Thereisnoraceofmenanywhereonearthsobackwardthatithasnolanguagenosetofspeechsoundsbywhichthepeoplecommunicatewithonemother.Furthermoreinhistoricaltimestherehasneverbeenaraceofmenwithoutalanguage. Secondthereisnosuchthingasaprimitivelanguage.Therearemanypeoplewhoseculturesareundevelopedwhoareaswesayuncivilizedbutthelanguagestheyspeakarenotprimitive.Inallknown1anguageswecanseecomplexitiesthatmusthavebeentensofthousandsofyearsindeveloping. Thishasnotalwaysbeenwellunderstood;indeedthedirectcontraryhasoftenbeenstated.PopularideasofthelanguageoftheAmericanIndianswillillustrate.ManypeoplehavesupposedthattheIndianscommunicatedinaveryprimitivesystemofnoises.Studyhasprovedthistobenonsense.ThereareorwerehundredsofAmericanIndianlanguagesandallofthemturnouttobeverycomplicatedandveryold.TheyarecertainlydifferentfromthelanguagesthatmostofusarefamiliarwithbuttheyarenomoreprimitivefivethanEnglishandGreek. Athirdthingweknowaboutlanguageisthatalllanguagesareperfectlyadequate.Thatiseachoneisaperfectmeansofexpressingthecultureofthepeoplewhospeakthelanguage. Finallyweknowthatlanguagechanges.Itisnaturalandnormalforlanguagetochange;theonlylanguageswhichdonotchangearethedeadones.Thisiseasytounderstandifwelookbackwardintime.Changegoesoninallaspectsoflanguage.Grammaticalfeatureschangeasdospeechsoundsandchangesinvocabularyaresometimesveryextensiveandmayoccurveryrapidly.Vocabularyistheleaststablepartofanylanguage. race/n.种族 primitive/adj.原始的 uncivilized/adj.不开化的落后的 complexity/n.复杂性复杂现象 nonsense/n.胡说没有根据的话 vocabulary/n.词汇 TheauthorhasusedAmericanIndianlanguagesasanexampletoshowthattheyare______.
DefectiveGenesandHumanHealth Eachofuscarriesabouthalfadozendefective有缺点的genes.Weremainblissfully快乐地unawareofthisfactunlessweoroneofourcloserelativesareamongstthemanymillionswhosufferfromageneticdisease.Aboutoneintenpeoplehasorwilldevelopatsomelaterstageaninherited遗传的geneticdisorderandapproximately2800specificconditionsareknowntobecausedbydefectsmutationsinjustoneofthepatient’’sgenes.Somesinglegenedisordersarequitecommon-—cystic胞状的fibrosis纤维化isfoundinoneoutofevery2500babiesbornintheWesternWorld—andintotaldiseasesthatcanbetracedtosinglegenedefectsaccountforabout5%ofalladmissionstochildren’’shospitals. Mostofusdonotsufferanyharmfuleffectsfromourdefectivegenesbecausewecarrytwocopiesofnearlyallgenesonederivedfromourmotherandtheotherfromourfather.Theonlyexceptionstothisrulearethegenesfoundonthemalesexchromosomes染色体MaleshaveoneXandoneYchromosometheformerfromthemotherandthelatterfromthefathersoeachcellhasonlyonecopyofthegenesonthesechromosomes.Inthemajorityofcasesonenormalgeneissufficienttoavoidallthesymptomsofdisease.Ifthepotentiallyharmfulgeneisrecessive后退的thenitsnormalcounterpart配对的willcarryoutallthetasksassignedtoboth.Onlyifweinheritfromourparentstwocopiesofthesamerecessivegenewilladiseasedevelop. Ontheotherhandifthegeneisdominant显性的italonecanproducethediseaseevenifitscounterpartisnormal.Clearlyonlythechildrenofaparentwiththediseasecanbeaffectedandthenaverageonlyhalfthechildrenwillbeaffected.Huntington’’schorea舞蹈病aseverediseaseofthenervoussystemwhichbecomesapparentonlyinadulthoodisanexampleofadominantgeneticdisease. FinallytherearetheXchromosome-linkedgeneticdiseases.Asmaleshaveonlyonecopyofthegenesfromthischromosometherearenoothersavailabletofulfillthedefectivegene’’sfunction.ExamplesofsuchdiseasesareDuchennemusculardystrophy营养不良andperhapsmostwellknownofallhemophilia血友病. QueenVictoriawasacarrierofthedefectivegeneresponsibleforhemophiliaandthroughheritwastransmittedtotheroyalfamiliesofRussiaSpainandPrussia.MinorcutsandbruiseswhichwoulddolittleharmtomostpeoplecanprovefataltohemophiliacswholacktheproteinsFactorsVIIIandIV凝血因子VIII和IVinvolvedintheclotting血凝结ofbloodwhicharecodedforbythedefectivegenes.Sadlybeforetheseproteinsweremadeavailablethroughgeneticengineeringhemophiliacsweretreatedwithproteinsisolatedfromhumanblood.Someofthisbloodwascontaminated污损withtheAIDSvirusandhasresultedintragic悲惨的consequencesformanyhemophiliacs.Useofgeneticallyengineeredproteinsintherapeuticapplicationsratherthanbloodproductswillavoidtheseproblemsinthefuture. Notalldefectivegenesnecessarilyproducedetrimental有害的effectssincetheenvironmentinwhichthegeneoperatesisalsoofimportance.Aclassicexampleofageneticdiseasehavingabeneficialeffectonsurvivalisillustratedbytherelationshipbetweensickle-cell镶形血球anemia贫血症andmalaria疟病.Onlyindividualshavingtwocopiesofthesickle-cellgeneandonenormalgeneareunaffectedandmoreimportantlyareabletoresistinfection传染bymalarialparasites寄生虫.Theclearadvantageinthiscaseofhavingonedefectivegeneexplainswhythisgeneiscommoninpopulationsinthoseareasoftheworldwheremalariaisendemic特有的. WhichofthefollowingstatementsongenesanddiseasesisNOTTRUE?
DefectiveGenesandHumanHealth Eachofuscarriesabouthalfadozendefective有缺点的genes.Weremainblissfully快乐地unawareofthisfactunlessweoroneofourcloserelativesareamongstthemanymillionswhosufferfromageneticdisease.Aboutoneintenpeoplehasorwilldevelopatsomelaterstageaninherited遗传的geneticdisorderandapproximately2800specificconditionsareknowntobecausedbydefectsmutationsinjustoneofthepatient’’sgenes.Somesinglegenedisordersarequitecommon-—cystic胞状的fibrosis纤维化isfoundinoneoutofevery2500babiesbornintheWesternWorld—andintotaldiseasesthatcanbetracedtosinglegenedefectsaccountforabout5%ofalladmissionstochildren’’shospitals. Mostofusdonotsufferanyharmfuleffectsfromourdefectivegenesbecausewecarrytwocopiesofnearlyallgenesonederivedfromourmotherandtheotherfromourfather.Theonlyexceptionstothisrulearethegenesfoundonthemalesexchromosomes染色体MaleshaveoneXandoneYchromosometheformerfromthemotherandthelatterfromthefathersoeachcellhasonlyonecopyofthegenesonthesechromosomes.Inthemajorityofcasesonenormalgeneissufficienttoavoidallthesymptomsofdisease.Ifthepotentiallyharmfulgeneisrecessive后退的thenitsnormalcounterpart配对的willcarryoutallthetasksassignedtoboth.Onlyifweinheritfromourparentstwocopiesofthesamerecessivegenewilladiseasedevelop. Ontheotherhandifthegeneisdominant显性的italonecanproducethediseaseevenifitscounterpartisnormal.Clearlyonlythechildrenofaparentwiththediseasecanbeaffectedandthenaverageonlyhalfthechildrenwillbeaffected.Huntington’’schorea舞蹈病aseverediseaseofthenervoussystemwhichbecomesapparentonlyinadulthoodisanexampleofadominantgeneticdisease. FinallytherearetheXchromosome-linkedgeneticdiseases.Asmaleshaveonlyonecopyofthegenesfromthischromosometherearenoothersavailabletofulfillthedefectivegene’’sfunction.ExamplesofsuchdiseasesareDuchennemusculardystrophy营养不良andperhapsmostwellknownofallhemophilia血友病. QueenVictoriawasacarrierofthedefectivegeneresponsibleforhemophiliaandthroughheritwastransmittedtotheroyalfamiliesofRussiaSpainandPrussia.MinorcutsandbruiseswhichwoulddolittleharmtomostpeoplecanprovefataltohemophiliacswholacktheproteinsFactorsVIIIandIV凝血因子VIII和IVinvolvedintheclotting血凝结ofbloodwhicharecodedforbythedefectivegenes.Sadlybeforetheseproteinsweremadeavailablethroughgeneticengineeringhemophiliacsweretreatedwithproteinsisolatedfromhumanblood.Someofthisbloodwascontaminated污损withtheAIDSvirusandhasresultedintragic悲惨的consequencesformanyhemophiliacs.Useofgeneticallyengineeredproteinsintherapeuticapplicationsratherthanbloodproductswillavoidtheseproblemsinthefuture. Notalldefectivegenesnecessarilyproducedetrimental有害的effectssincetheenvironmentinwhichthegeneoperatesisalsoofimportance.Aclassicexampleofageneticdiseasehavingabeneficialeffectonsurvivalisillustratedbytherelationshipbetweensickle-cell镶形血球anemia贫血症andmalaria疟病.Onlyindividualshavingtwocopiesofthesickle-cellgeneandonenormalgeneareunaffectedandmoreimportantlyareabletoresistinfection传染bymalarialparasites寄生虫.Theclearadvantageinthiscaseofhavingonedefectivegeneexplainswhythisgeneiscommoninpopulationsinthoseareasoftheworldwheremalariaisendemic特有的. thediseasepara.7refersto______.
MostAdultsinU.S.HaveLowRiskofHeartDisease Morethan80percentofUSadultshavealessthan10percentriskofdevelopingheartdiseaseinthenext10yearsaccordingtoareportintheJournaloftheAmericanCollegeofCardiology.Just3percenthaveariskthatexceeds20percent. IhopethatthesenumberswillgivephysiciansresearchershealthpolicyanalystsandothersabetterideaofhowcoronaryheartdiseaseisdistributedintheUSpopulationleadauthorDr.EarlS.FordfromtheCentersforDiseaseControlandPreventioninAtlantasaidinastatement. Thefindingsarebasedonanalysisofdatafrom13769subjectsbetween20and79yearsofagewhoparticipatedintheThirdNationalHealthandNutritionExaminationSurveyfrom1988to1994. Overall82percentofadultshadariskoflessthan10percent15percenthadariskthatfellbetween10to20percentand3percenthadariskabove20percent. Theproportionofsubjectsinthehighestriskgroupincreasedwithadvancingageandmenweremorelikelythanwomentobeinthisgroup.Bycontrastraceorethnicityhadlittleeffectonriskdistributions. Althoughthereportsuggeststhatmostadultshavealow10-yearriskofheartdiseasealargeproportionhaveahighorimmediateriskDr.DanielS.BermanfromCedars-SinaiMedicalCenterinLosAngelesandDr.NathanD.WongfromtheUniversityofCaliforniaatIrvinenoteinarelatededitorial. Aggressivetreatmentmeasuresandpublichealthstrategiesareneededtoshifttheoverallpopulationriskdownwardtheyadd. Elderlypeoplehaveahigherriskofheartdiseasethanyoungerpeople.
MostAdultsinU.S.HaveLowRiskofHeartDisease Morethan80percentofUSadultshavealessthan10percentriskofdevelopingheartdiseaseinthenext10yearsaccordingtoareportintheJournaloftheAmericanCollegeofCardiology.Just3percenthaveariskthatexceeds20percent. IhopethatthesenumberswillgivephysiciansresearchershealthpolicyanalystsandothersabetterideaofhowcoronaryheartdiseaseisdistributedintheUSpopulationleadauthorDr.EarlS.FordfromtheCentersforDiseaseControlandPreventioninAtlantasaidinastatement. Thefindingsarebasedonanalysisofdatafrom13769subjectsbetween20and79yearsofagewhoparticipatedintheThirdNationalHealthandNutritionExaminationSurveyfrom1988to1994. Overall82percentofadultshadariskoflessthan10percent15percenthadariskthatfellbetween10to20percentand3percenthadariskabove20percent. Theproportionofsubjectsinthehighestriskgroupincreasedwithadvancingageandmenweremorelikelythanwomentobeinthisgroup.Bycontrastraceorethnicityhadlittleeffectonriskdistributions. Althoughthereportsuggeststhatmostadultshavealow10-yearriskofheartdiseasealargeproportionhaveahighorimmediateriskDr.DanielS.BermanfromCedars-SinaiMedicalCenterinLosAngelesandDr.NathanD.WongfromtheUniversityofCaliforniaatIrvinenoteinarelatededitorial. Aggressivetreatmentmeasuresandpublichealthstrategiesareneededtoshifttheoverallpopulationriskdownwardtheyadd. Only3percentofUSadultshaveamorethan10percent10-yearriskofheartdisease.
DefectiveGenesandHumanHealth Eachofuscarriesabouthalfadozendefective有缺点的genes.Weremainblissfully快乐地unawareofthisfactunlessweoroneofourcloserelativesareamongstthemanymillionswhosufferfromageneticdisease.Aboutoneintenpeoplehasorwilldevelopatsomelaterstageaninherited遗传的geneticdisorderandapproximately2800specificconditionsareknowntobecausedbydefectsmutationsinjustoneofthepatient’’sgenes.Somesinglegenedisordersarequitecommon-—cystic胞状的fibrosis纤维化isfoundinoneoutofevery2500babiesbornintheWesternWorld—andintotaldiseasesthatcanbetracedtosinglegenedefectsaccountforabout5%ofalladmissionstochildren’’shospitals. Mostofusdonotsufferanyharmfuleffectsfromourdefectivegenesbecausewecarrytwocopiesofnearlyallgenesonederivedfromourmotherandtheotherfromourfather.Theonlyexceptionstothisrulearethegenesfoundonthemalesexchromosomes染色体MaleshaveoneXandoneYchromosometheformerfromthemotherandthelatterfromthefathersoeachcellhasonlyonecopyofthegenesonthesechromosomes.Inthemajorityofcasesonenormalgeneissufficienttoavoidallthesymptomsofdisease.Ifthepotentiallyharmfulgeneisrecessive后退的thenitsnormalcounterpart配对的willcarryoutallthetasksassignedtoboth.Onlyifweinheritfromourparentstwocopiesofthesamerecessivegenewilladiseasedevelop. Ontheotherhandifthegeneisdominant显性的italonecanproducethediseaseevenifitscounterpartisnormal.Clearlyonlythechildrenofaparentwiththediseasecanbeaffectedandthenaverageonlyhalfthechildrenwillbeaffected.Huntington’’schorea舞蹈病aseverediseaseofthenervoussystemwhichbecomesapparentonlyinadulthoodisanexampleofadominantgeneticdisease. FinallytherearetheXchromosome-linkedgeneticdiseases.Asmaleshaveonlyonecopyofthegenesfromthischromosometherearenoothersavailabletofulfillthedefectivegene’’sfunction.ExamplesofsuchdiseasesareDuchennemusculardystrophy营养不良andperhapsmostwellknownofallhemophilia血友病. QueenVictoriawasacarrierofthedefectivegeneresponsibleforhemophiliaandthroughheritwastransmittedtotheroyalfamiliesofRussiaSpainandPrussia.MinorcutsandbruiseswhichwoulddolittleharmtomostpeoplecanprovefataltohemophiliacswholacktheproteinsFactorsVIIIandIV凝血因子VIII和IVinvolvedintheclotting血凝结ofbloodwhicharecodedforbythedefectivegenes.Sadlybeforetheseproteinsweremadeavailablethroughgeneticengineeringhemophiliacsweretreatedwithproteinsisolatedfromhumanblood.Someofthisbloodwascontaminated污损withtheAIDSvirusandhasresultedintragic悲惨的consequencesformanyhemophiliacs.Useofgeneticallyengineeredproteinsintherapeuticapplicationsratherthanbloodproductswillavoidtheseproblemsinthefuture. Notalldefectivegenesnecessarilyproducedetrimental有害的effectssincetheenvironmentinwhichthegeneoperatesisalsoofimportance.Aclassicexampleofageneticdiseasehavingabeneficialeffectonsurvivalisillustratedbytherelationshipbetweensickle-cell镶形血球anemia贫血症andmalaria疟病.Onlyindividualshavingtwocopiesofthesickle-cellgeneandonenormalgeneareunaffectedandmoreimportantlyareabletoresistinfection传染bymalarialparasites寄生虫.Theclearadvantageinthiscaseofhavingonedefectivegeneexplainswhythisgeneiscommoninpopulationsinthoseareasoftheworldwheremalariaisendemic特有的. Wecaninferfrompara.4that______.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????{{B}}OneGoodReasontoLetSmallpox Live{{/B}}??It’snowafairbetthatwewillneverseethetotal extinctionofthesmallpoxvirus.Theideawastocapthegloriousachievement of1980whensmallpoxwaseradicatedinthewildbydestroyingthekiller virusinthelasttwolabsthataresupposedtohaveit--oneintheUSandone inRussia.Ifsmallpoxhadtrulygonefromtheplanetwhatpointwastherein keepingthesereserves???{{U}}?51?{{/U}}realityof courseitwasnaiveto{{U}}?52?{{/U}}thateveryonewouldlet{{U}} ?53?{{/U}}ofsuchapotentpotentialweapon.Undoubtedlyseveral nationsstillhave{{U}}?54?{{/U}}vials.{{U}}?55?{{/U}}the lastofficialstocksoflivevirusbredmistrustoftheUSandRussia{{U}} ?56?{{/U}}noobviousgain.??NowAmericanresearchers have{{U}}?57?{{/U}}ananimalmodelofthehumandiseaseopening the{{U}}?58?{{/U}}fortestsonnewtreatmentsandvaccines.Soonce againthere’sagoodreasonto{{U}}?59?{{/U}}thevirus--justin{{U}} ?60?{{/U}}thediseaseputsinareappearance.??Howdo we{{U}}?61?{{/U}}withthemistrustoftheUSandRussia?{{U}}?62 ?{{/U}}.Keepthevirus{{U}}?63?{{/U}}internationalauspicesina well-guardedUNlaboratorythat’sopentoallcountries.TheUSwillobjectof coursejustasitrejectsamultilateralapproachtojustabouteverything.But itdoesn’t{{U}}?64?{{/U}}theideaiswrongffthevirus{{U}}?65 ?{{/U}}usefulthenlet’smakeittheservantofallhumanity--notjusta partofit.
InTom’’seyestherestaurantatthecornerofthestreetisaverysmartone.
ASmallEvent OneafternooninJanuary1989SuzanSharp43andher8-year-oldsonDavidwerewalkinghardacrossanicyparkinglotwhenSuzan’’scane手杖slidontheice.She【51】facefistintothemud.David【52】toherside.AreyouallrightMom? 【53】Suzanputherselfup.I’’mokayhoney.shesaid. IthadbeennearlytwoyearssinceSuzanhadtroublewalking.Shewasfallingmore【54】now.Everyinchoficewasa【55】dangerforher.Icoulddosomethingtheboythought. Davidtoowashaving【56】ofhisown.Theboyhadaspeechdefect.Atschoolhe【57】askedquestionsorreadaloud. OnedayDavidsteacherannounceda【58】assignment.Eachofyouisgoingtocomeupwithaninventionshesaid.ThiswasforINVENTAMERICA!anationalcompetitiontoencouragecreativityin【59】.AnideahitDavidoneevening.【60】onlyhismotherscanedidn’tsliponicehethought.That’’sit!Davidrealized. WhatifIfixedyourcanetoanailstretchedoutofthebottom?heaskedhismother.Hismothertoldhim【61】itwouldscratchfloors. Itlookslikeaball-pointpen.Youtakeyourhand【62】thebuttonandthenailreturnsbackup.Hourslaterthecanewasfinished.DavidandhisfatherJeff【63】asSuzanusedittowalk50feetacrossthe【64】. Itworks!shesaid.InJuly1989DavidwasdeclarednationalwinnerattheannualINVENTAMERICA!ceremonyinWashingtonD.C.. AsDavidbegantomake【65】appearanceshewasforcedtocommunicatemoreclearly.TodayDavidisnearlyfreeofhiscanewhichiswaitingtobewidelyused. Sotheboywhooncehadtroubletalkingnowhopestostartmakingcanesforpeoplewhohavetroublewalking.
MostAdultsinU.S.HaveLowRiskofHeartDisease Morethan80percentofUSadultshavealessthan10percentriskofdevelopingheartdiseaseinthenext10yearsaccordingtoareportintheJournaloftheAmericanCollegeofCardiology.Just3percenthaveariskthatexceeds20percent. IhopethatthesenumberswillgivephysiciansresearchershealthpolicyanalystsandothersabetterideaofhowcoronaryheartdiseaseisdistributedintheUSpopulationleadauthorDr.EarlS.FordfromtheCentersforDiseaseControlandPreventioninAtlantasaidinastatement. Thefindingsarebasedonanalysisofdatafrom13769subjectsbetween20and79yearsofagewhoparticipatedintheThirdNationalHealthandNutritionExaminationSurveyfrom1988to1994. Overall82percentofadultshadariskoflessthan10percent15percenthadariskthatfellbetween10to20percentand3percenthadariskabove20percent. Theproportionofsubjectsinthehighestriskgroupincreasedwithadvancingageandmenweremorelikelythanwomentobeinthisgroup.Bycontrastraceorethnicityhadlittleeffectonriskdistributions. Althoughthereportsuggeststhatmostadultshavealow10-yearriskofheartdiseasealargeproportionhaveahighorimmediateriskDr.DanielS.BermanfromCedars-SinaiMedicalCenterinLosAngelesandDr.NathanD.WongfromtheUniversityofCaliforniaatIrvinenoteinarelatededitorial. Aggressivetreatmentmeasuresandpublichealthstrategiesareneededtoshifttheoverallpopulationriskdownwardtheyadd. Therewasagreaterproportionofmenthanwomeninthesurvey.
LargeareasofAlaskanlandremaindesolateduetoharshclimate.
Somethingsweknowaboutlanguage Manythingsaboutlanguageareamysteryandmanywillalwaysremainso.Butsomethingswedoknow. Firstweknowthatallhumanbeingshavealanguageofsomesort.Thereisnoraceofmenanywhereonearthsobackwardthatithasnolanguagenosetofspeechsoundsbywhichthepeoplecommunicatewithonemother.Furthermoreinhistoricaltimestherehasneverbeenaraceofmenwithoutalanguage. Secondthereisnosuchthingasaprimitivelanguage.Therearemanypeoplewhoseculturesareundevelopedwhoareaswesayuncivilizedbutthelanguagestheyspeakarenotprimitive.Inallknown1anguageswecanseecomplexitiesthatmusthavebeentensofthousandsofyearsindeveloping. Thishasnotalwaysbeenwellunderstood;indeedthedirectcontraryhasoftenbeenstated.PopularideasofthelanguageoftheAmericanIndianswillillustrate.ManypeoplehavesupposedthattheIndianscommunicatedinaveryprimitivesystemofnoises.Studyhasprovedthistobenonsense.ThereareorwerehundredsofAmericanIndianlanguagesandallofthemturnouttobeverycomplicatedandveryold.TheyarecertainlydifferentfromthelanguagesthatmostofusarefamiliarwithbuttheyarenomoreprimitivefivethanEnglishandGreek. Athirdthingweknowaboutlanguageisthatalllanguagesareperfectlyadequate.Thatiseachoneisaperfectmeansofexpressingthecultureofthepeoplewhospeakthelanguage. Finallyweknowthatlanguagechanges.Itisnaturalandnormalforlanguagetochange;theonlylanguageswhichdonotchangearethedeadones.Thisiseasytounderstandifwelookbackwardintime.Changegoesoninallaspectsoflanguage.Grammaticalfeatureschangeasdospeechsoundsandchangesinvocabularyaresometimesveryextensiveandmayoccurveryrapidly.Vocabularyistheleaststablepartofanylanguage. race/n.种族 primitive/adj.原始的 uncivilized/adj.不开化的落后的 complexity/n.复杂性复杂现象 nonsense/n.胡说没有根据的话 vocabulary/n.词汇 Accordingtotheauthorlanguagechangesaremostlikelytooccurin______.
Youwillfindthatthecommunityhasexperiencedgreatchangessinceyoucameherelast.
ASmallEvent OneafternooninJanuary1989SuzanSharp43andher8-year-oldsonDavidwerewalkinghardacrossanicyparkinglotwhenSuzan’’scane手杖slidontheice.She【51】facefistintothemud.David【52】toherside.AreyouallrightMom? 【53】Suzanputherselfup.I’’mokayhoney.shesaid. IthadbeennearlytwoyearssinceSuzanhadtroublewalking.Shewasfallingmore【54】now.Everyinchoficewasa【55】dangerforher.Icoulddosomethingtheboythought. Davidtoowashaving【56】ofhisown.Theboyhadaspeechdefect.Atschoolhe【57】askedquestionsorreadaloud. OnedayDavidsteacherannounceda【58】assignment.Eachofyouisgoingtocomeupwithaninventionshesaid.ThiswasforINVENTAMERICA!anationalcompetitiontoencouragecreativityin【59】.AnideahitDavidoneevening.【60】onlyhismotherscanedidn’tsliponicehethought.That’’sit!Davidrealized. WhatifIfixedyourcanetoanailstretchedoutofthebottom?heaskedhismother.Hismothertoldhim【61】itwouldscratchfloors. Itlookslikeaball-pointpen.Youtakeyourhand【62】thebuttonandthenailreturnsbackup.Hourslaterthecanewasfinished.DavidandhisfatherJeff【63】asSuzanusedittowalk50feetacrossthe【64】. Itworks!shesaid.InJuly1989DavidwasdeclarednationalwinnerattheannualINVENTAMERICA!ceremonyinWashingtonD.C.. AsDavidbegantomake【65】appearanceshewasforcedtocommunicatemoreclearly.TodayDavidisnearlyfreeofhiscanewhichiswaitingtobewidelyused. Sotheboywhooncehadtroubletalkingnowhopestostartmakingcanesforpeoplewhohavetroublewalking.
AIDS AIDSisAcquiredImmuneDeficiencySyndrome.Thehumanimmunodeficiencyvirus人类免疫缺损病毒calledHIVisbelievedtocauseAIDS.Thereisnocure.Peoplewhogetthediseasewilldie.AIDSitselfdoesnotkill.Howeveritattacksanddestroysthebody’’sdefensesystemthatfightsagainstinfection.Whenthishappensapersonhaslittleabilitytofightoffmanyotherdiseasesincludingpneumonia肺炎cancerandtuberculosis结核病. AnewstudysaysthenumberofwomenintheUnitedStateswithAIDShasincreasedsharply.ThestudysaysAIDSisincreasingfasteramongwomenthanamongmen.EighteenpercentofAIDSpatientsarewomen.Thisisalmost3timestherate10yearsago.MostwomengettheAIDSvirusfromhavingsexualrelationswithmen.Pregnantwomenwiththediseasecanpassittotheirbabies.TheeffectofAIDSinAmericaisgreatestinlargecities.AIDSistheleadingcauseofdeathamongallpeoplein79cities.Itistheleadingcauseofdeathamongwomenin15cities.TheseincludeNewYorkCityandMiamiFlorida. DoctorsintheUnitedStatesfirstnotedAIDS14yearsagoinhomosexual同性恋的meninNewYorkandCalifornia.IntheUnitedStatesAIDSspreadfirstamonghomosexualmen.Thenitappearedinpeoplewhosharedneedlestoputillegaldrugsintotheirblood.Italsoappearedinpeoplewhohadreceivedinfectedbloodproductsathospitals.TheAIDSvirusisspreadthroughtheexchangeofinfectedbloodorbodyfluidsreleasedduringsexualactivity.Itisalsospreadbyhavingsexualrelationswithsomeonewhohasthevirus.Anditisspreadbysharingdrugneedlesthathaveinfectedbloodonthem. AIDShasaffectedseveralfamousAmericanathletes.TwoyearsagoformertennisplayerArthurAshediedofthedisease.AtaboutthesametimeformerbasketballplayerMagicJohnsonannouncedthathehastheAIDSvirus.ThemostrecentathletetobeaffectedisGregoryLouganis.LouganiswonanumberofgoldmedalsinOlympicdivingcompetition.HeannouncedontelevisionthathehasAIDS.PresidentClintonmetwithLouganisandpraisedhimfordiscussinghissickness.Mr.Clintonsaiditisimportanttoeducatethepublic. ActivistshavesucceededineducatingAmericansaboutAIDSandthepeoplewhohaveit.TheyalsohavebeenurgingthefederalgovernmenttoincreaseeffortstofindacureforAIDS.ScientistsfirstidentifiedthevirusthatisbelievedtocauseAIDSin1983.Manyofthemthenthoughttheycouldproduceananti-AIDSvaccine痘苗.Suchamedicinecouldbegiventopeopletoprotectagainstthedisease.HoweverscientistsatAmericangovernmentagenciesuniversitiesanddrugcompanieshavefailedtoproduceananti-AIDSvaccine.Buttheyarecontinuingefforttofindbettertreatmentsforacure. WhyaresomemuseumsclosedinayearlyeventcalledDaywithoutArt?
ASmallEvent OneafternooninJanuary1989SuzanSharp43andher8-year-oldsonDavidwerewalkinghardacrossanicyparkinglotwhenSuzan’’scane手杖slidontheice.She【51】facefistintothemud.David【52】toherside.AreyouallrightMom? 【53】Suzanputherselfup.I’’mokayhoney.shesaid. IthadbeennearlytwoyearssinceSuzanhadtroublewalking.Shewasfallingmore【54】now.Everyinchoficewasa【55】dangerforher.Icoulddosomethingtheboythought. Davidtoowashaving【56】ofhisown.Theboyhadaspeechdefect.Atschoolhe【57】askedquestionsorreadaloud. OnedayDavidsteacherannounceda【58】assignment.Eachofyouisgoingtocomeupwithaninventionshesaid.ThiswasforINVENTAMERICA!anationalcompetitiontoencouragecreativityin【59】.AnideahitDavidoneevening.【60】onlyhismotherscanedidn’tsliponicehethought.That’’sit!Davidrealized. WhatifIfixedyourcanetoanailstretchedoutofthebottom?heaskedhismother.Hismothertoldhim【61】itwouldscratchfloors. Itlookslikeaball-pointpen.Youtakeyourhand【62】thebuttonandthenailreturnsbackup.Hourslaterthecanewasfinished.DavidandhisfatherJeff【63】asSuzanusedittowalk50feetacrossthe【64】. Itworks!shesaid.InJuly1989DavidwasdeclarednationalwinnerattheannualINVENTAMERICA!ceremonyinWashingtonD.C.. AsDavidbegantomake【65】appearanceshewasforcedtocommunicatemoreclearly.TodayDavidisnearlyfreeofhiscanewhichiswaitingtobewidelyused. Sotheboywhooncehadtroubletalkingnowhopestostartmakingcanesforpeoplewhohavetroublewalking.
Thepolicemanwrotedownallthe{{U}}particulars{{/U}}oftheaccident.
AIDS AIDSisAcquiredImmuneDeficiencySyndrome.Thehumanimmunodeficiencyvirus人类免疫缺损病毒calledHIVisbelievedtocauseAIDS.Thereisnocure.Peoplewhogetthediseasewilldie.AIDSitselfdoesnotkill.Howeveritattacksanddestroysthebody’’sdefensesystemthatfightsagainstinfection.Whenthishappensapersonhaslittleabilitytofightoffmanyotherdiseasesincludingpneumonia肺炎cancerandtuberculosis结核病. AnewstudysaysthenumberofwomenintheUnitedStateswithAIDShasincreasedsharply.ThestudysaysAIDSisincreasingfasteramongwomenthanamongmen.EighteenpercentofAIDSpatientsarewomen.Thisisalmost3timestherate10yearsago.MostwomengettheAIDSvirusfromhavingsexualrelationswithmen.Pregnantwomenwiththediseasecanpassittotheirbabies.TheeffectofAIDSinAmericaisgreatestinlargecities.AIDSistheleadingcauseofdeathamongallpeoplein79cities.Itistheleadingcauseofdeathamongwomenin15cities.TheseincludeNewYorkCityandMiamiFlorida. DoctorsintheUnitedStatesfirstnotedAIDS14yearsagoinhomosexual同性恋的meninNewYorkandCalifornia.IntheUnitedStatesAIDSspreadfirstamonghomosexualmen.Thenitappearedinpeoplewhosharedneedlestoputillegaldrugsintotheirblood.Italsoappearedinpeoplewhohadreceivedinfectedbloodproductsathospitals.TheAIDSvirusisspreadthroughtheexchangeofinfectedbloodorbodyfluidsreleasedduringsexualactivity.Itisalsospreadbyhavingsexualrelationswithsomeonewhohasthevirus.Anditisspreadbysharingdrugneedlesthathaveinfectedbloodonthem. AIDShasaffectedseveralfamousAmericanathletes.TwoyearsagoformertennisplayerArthurAshediedofthedisease.AtaboutthesametimeformerbasketballplayerMagicJohnsonannouncedthathehastheAIDSvirus.ThemostrecentathletetobeaffectedisGregoryLouganis.LouganiswonanumberofgoldmedalsinOlympicdivingcompetition.HeannouncedontelevisionthathehasAIDS.PresidentClintonmetwithLouganisandpraisedhimfordiscussinghissickness.Mr.Clintonsaiditisimportanttoeducatethepublic. ActivistshavesucceededineducatingAmericansaboutAIDSandthepeoplewhohaveit.TheyalsohavebeenurgingthefederalgovernmenttoincreaseeffortstofindacureforAIDS.ScientistsfirstidentifiedthevirusthatisbelievedtocauseAIDSin1983.Manyofthemthenthoughttheycouldproduceananti-AIDSvaccine痘苗.Suchamedicinecouldbegiventopeopletoprotectagainstthedisease.HoweverscientistsatAmericangovernmentagenciesuniversitiesanddrugcompanieshavefailedtoproduceananti-AIDSvaccine.Buttheyarecontinuingefforttofindbettertreatmentsforacure. Whatisnotlikelytohappen?
ASmallEvent OneafternooninJanuary1989SuzanSharp43andher8-year-oldsonDavidwerewalkinghardacrossanicyparkinglotwhenSuzan’’scane手杖slidontheice.She【51】facefistintothemud.David【52】toherside.AreyouallrightMom? 【53】Suzanputherselfup.I’’mokayhoney.shesaid. IthadbeennearlytwoyearssinceSuzanhadtroublewalking.Shewasfallingmore【54】now.Everyinchoficewasa【55】dangerforher.Icoulddosomethingtheboythought. Davidtoowashaving【56】ofhisown.Theboyhadaspeechdefect.Atschoolhe【57】askedquestionsorreadaloud. OnedayDavidsteacherannounceda【58】assignment.Eachofyouisgoingtocomeupwithaninventionshesaid.ThiswasforINVENTAMERICA!anationalcompetitiontoencouragecreativityin【59】.AnideahitDavidoneevening.【60】onlyhismotherscanedidn’tsliponicehethought.That’’sit!Davidrealized. WhatifIfixedyourcanetoanailstretchedoutofthebottom?heaskedhismother.Hismothertoldhim【61】itwouldscratchfloors. Itlookslikeaball-pointpen.Youtakeyourhand【62】thebuttonandthenailreturnsbackup.Hourslaterthecanewasfinished.DavidandhisfatherJeff【63】asSuzanusedittowalk50feetacrossthe【64】. Itworks!shesaid.InJuly1989DavidwasdeclarednationalwinnerattheannualINVENTAMERICA!ceremonyinWashingtonD.C.. AsDavidbegantomake【65】appearanceshewasforcedtocommunicatemoreclearly.TodayDavidisnearlyfreeofhiscanewhichiswaitingtobewidelyused. Sotheboywhooncehadtroubletalkingnowhopestostartmakingcanesforpeoplewhohavetroublewalking.
Eachleaderhadaseriouslookashesignedthepeacetreaty.
Someinsectsrelyonthetinyhairsscatteredovertheirbodiestosensesoundwaves.
ASmallEvent OneafternooninJanuary1989SuzanSharp43andher8-year-oldsonDavidwerewalkinghardacrossanicyparkinglotwhenSuzan’’scane手杖slidontheice.She【51】facefistintothemud.David【52】toherside.AreyouallrightMom? 【53】Suzanputherselfup.I’’mokayhoney.shesaid. IthadbeennearlytwoyearssinceSuzanhadtroublewalking.Shewasfallingmore【54】now.Everyinchoficewasa【55】dangerforher.Icoulddosomethingtheboythought. Davidtoowashaving【56】ofhisown.Theboyhadaspeechdefect.Atschoolhe【57】askedquestionsorreadaloud. OnedayDavidsteacherannounceda【58】assignment.Eachofyouisgoingtocomeupwithaninventionshesaid.ThiswasforINVENTAMERICA!anationalcompetitiontoencouragecreativityin【59】.AnideahitDavidoneevening.【60】onlyhismotherscanedidn’tsliponicehethought.That’’sit!Davidrealized. WhatifIfixedyourcanetoanailstretchedoutofthebottom?heaskedhismother.Hismothertoldhim【61】itwouldscratchfloors. Itlookslikeaball-pointpen.Youtakeyourhand【62】thebuttonandthenailreturnsbackup.Hourslaterthecanewasfinished.DavidandhisfatherJeff【63】asSuzanusedittowalk50feetacrossthe【64】. Itworks!shesaid.InJuly1989DavidwasdeclarednationalwinnerattheannualINVENTAMERICA!ceremonyinWashingtonD.C.. AsDavidbegantomake【65】appearanceshewasforcedtocommunicatemoreclearly.TodayDavidisnearlyfreeofhiscanewhichiswaitingtobewidelyused. Sotheboywhooncehadtroubletalkingnowhopestostartmakingcanesforpeoplewhohavetroublewalking.
Somethingsweknowaboutlanguage Manythingsaboutlanguageareamysteryandmanywillalwaysremainso.Butsomethingswedoknow. Firstweknowthatallhumanbeingshavealanguageofsomesort.Thereisnoraceofmenanywhereonearthsobackwardthatithasnolanguagenosetofspeechsoundsbywhichthepeoplecommunicatewithonemother.Furthermoreinhistoricaltimestherehasneverbeenaraceofmenwithoutalanguage. Secondthereisnosuchthingasaprimitivelanguage.Therearemanypeoplewhoseculturesareundevelopedwhoareaswesayuncivilizedbutthelanguagestheyspeakarenotprimitive.Inallknown1anguageswecanseecomplexitiesthatmusthavebeentensofthousandsofyearsindeveloping. Thishasnotalwaysbeenwellunderstood;indeedthedirectcontraryhasoftenbeenstated.PopularideasofthelanguageoftheAmericanIndianswillillustrate.ManypeoplehavesupposedthattheIndianscommunicatedinaveryprimitivesystemofnoises.Studyhasprovedthistobenonsense.ThereareorwerehundredsofAmericanIndianlanguagesandallofthemturnouttobeverycomplicatedandveryold.TheyarecertainlydifferentfromthelanguagesthatmostofusarefamiliarwithbuttheyarenomoreprimitivefivethanEnglishandGreek. Athirdthingweknowaboutlanguageisthatalllanguagesareperfectlyadequate.Thatiseachoneisaperfectmeansofexpressingthecultureofthepeoplewhospeakthelanguage. Finallyweknowthatlanguagechanges.Itisnaturalandnormalforlanguagetochange;theonlylanguageswhichdonotchangearethedeadones.Thisiseasytounderstandifwelookbackwardintime.Changegoesoninallaspectsoflanguage.Grammaticalfeatureschangeasdospeechsoundsandchangesinvocabularyaresometimesveryextensiveandmayoccurveryrapidly.Vocabularyistheleaststablepartofanylanguage. race/n.种族 primitive/adj.原始的 uncivilized/adj.不开化的落后的 complexity/n.复杂性复杂现象 nonsense/n.胡说没有根据的话 vocabulary/n.词汇 Inthesecondparagraphtheauthorthinksthat______.
ASmallEvent OneafternooninJanuary1989SuzanSharp43andher8-year-oldsonDavidwerewalkinghardacrossanicyparkinglotwhenSuzan’’scane手杖slidontheice.She【51】facefistintothemud.David【52】toherside.AreyouallrightMom? 【53】Suzanputherselfup.I’’mokayhoney.shesaid. IthadbeennearlytwoyearssinceSuzanhadtroublewalking.Shewasfallingmore【54】now.Everyinchoficewasa【55】dangerforher.Icoulddosomethingtheboythought. Davidtoowashaving【56】ofhisown.Theboyhadaspeechdefect.Atschoolhe【57】askedquestionsorreadaloud. OnedayDavidsteacherannounceda【58】assignment.Eachofyouisgoingtocomeupwithaninventionshesaid.ThiswasforINVENTAMERICA!anationalcompetitiontoencouragecreativityin【59】.AnideahitDavidoneevening.【60】onlyhismotherscanedidn’tsliponicehethought.That’’sit!Davidrealized. WhatifIfixedyourcanetoanailstretchedoutofthebottom?heaskedhismother.Hismothertoldhim【61】itwouldscratchfloors. Itlookslikeaball-pointpen.Youtakeyourhand【62】thebuttonandthenailreturnsbackup.Hourslaterthecanewasfinished.DavidandhisfatherJeff【63】asSuzanusedittowalk50feetacrossthe【64】. Itworks!shesaid.InJuly1989DavidwasdeclarednationalwinnerattheannualINVENTAMERICA!ceremonyinWashingtonD.C.. AsDavidbegantomake【65】appearanceshewasforcedtocommunicatemoreclearly.TodayDavidisnearlyfreeofhiscanewhichiswaitingtobewidelyused. Sotheboywhooncehadtroubletalkingnowhopestostartmakingcanesforpeoplewhohavetroublewalking.
Ittookmeawholehourtosolvetheproblem.
Thechairman{{U}}proposed{{/U}}thatweshouldstopthemeeting.
ASmallEvent OneafternooninJanuary1989SuzanSharp43andher8-year-oldsonDavidwerewalkinghardacrossanicyparkinglotwhenSuzan’’scane手杖slidontheice.She【51】facefistintothemud.David【52】toherside.AreyouallrightMom? 【53】Suzanputherselfup.I’’mokayhoney.shesaid. IthadbeennearlytwoyearssinceSuzanhadtroublewalking.Shewasfallingmore【54】now.Everyinchoficewasa【55】dangerforher.Icoulddosomethingtheboythought. Davidtoowashaving【56】ofhisown.Theboyhadaspeechdefect.Atschoolhe【57】askedquestionsorreadaloud. OnedayDavidsteacherannounceda【58】assignment.Eachofyouisgoingtocomeupwithaninventionshesaid.ThiswasforINVENTAMERICA!anationalcompetitiontoencouragecreativityin【59】.AnideahitDavidoneevening.【60】onlyhismotherscanedidn’tsliponicehethought.That’’sit!Davidrealized. WhatifIfixedyourcanetoanailstretchedoutofthebottom?heaskedhismother.Hismothertoldhim【61】itwouldscratchfloors. Itlookslikeaball-pointpen.Youtakeyourhand【62】thebuttonandthenailreturnsbackup.Hourslaterthecanewasfinished.DavidandhisfatherJeff【63】asSuzanusedittowalk50feetacrossthe【64】. Itworks!shesaid.InJuly1989DavidwasdeclarednationalwinnerattheannualINVENTAMERICA!ceremonyinWashingtonD.C.. AsDavidbegantomake【65】appearanceshewasforcedtocommunicatemoreclearly.TodayDavidisnearlyfreeofhiscanewhichiswaitingtobewidelyused. Sotheboywhooncehadtroubletalkingnowhopestostartmakingcanesforpeoplewhohavetroublewalking.
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