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红细胞悬浮稳定性差会导致
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血沉加快表示红细胞
通透性增大
脆性增大
悬浮稳定性差
可塑性差
红细胞悬浮稳定性降低会导致
易于溶血
迅速凝集
红细胞沉降率加快
出血时间延长
在微小孔隙处滞留
红细胞悬浮稳定性差时红细胞出现.
聚集
粘着
叠连
凝集
凝固
红细胞沉降率越小表示红细胞悬浮稳定性越大
红细胞悬浮稳定性差时将发生
溶血
血栓形成
叠连加速
脆性增加
红细胞悬浮稳定性差会导致
血沉加快
红细胞凝集
血液凝固
血沉降低
出血时间延长
红细胞悬浮稳定性差时将发生
溶血
血栓形成
红细胞叠连加速
红细胞脆性增加
红细胞聚集
红细胞悬浮稳定性差时红细胞出现
聚集
黏着
叠连
凝集
凝固
红细胞稳定性差会导致
溶血
红细胞凝集
血液凝固
血沉加快
血沉减慢
红细胞悬浮稳定性差时红细胞出现
聚集
粘着
叠连
凝集
凝固
红细胞悬浮稳定性
盐水钻井液具有的特点
稳定性高、悬浮力强
稳定性高、悬浮力弱
稳定性差、悬浮力强
稳定性差、悬浮力弱
红细胞悬浮稳定性差会导致
溶血
红细胞凝集
血液凝固
红细胞沉降率加快
出血时间延长(3/2003)
红细胞的悬浮稳定性
红细胞悬浮稳定性差时红细胞出现
聚集
黏着
叠连
凝集
凝固
红细胞悬浮稳定性降低会导致
易于溶血
迅速凝集
红细胞沉降率加快
出血时间延长
在微小孔隙处滞留
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In1784fiveyearsbeforehebecamepresidentoftheUnitedStatesGeorgeWashington52wasnearlytoothless.Sohehiredadentisttotransplantnineteethintohisjaw—havingextractedthemfromthemouthsofhisslaves. That’safardifferentimagefromthecherry-tree-choppingGeorgemostpeoplerememberfromtheirhistorybooks.Butrecentlymanyhistorianshavebeguntofocusontherolesslaveryplayedinthelivesofthefoundinggeneration.TheyhavebeenspurredinpartbyDNAevidencemadeavailablein1998whichalmostcertainlyprovedThomasJeffersonhadfatheredatleastonechildwithhisslaveSallyHemings.Andonlyoverthepast30yearshavescholarsexaminedhistoryfromthebottomup.Worksofseveralhistoriansrevealthemoralcompromisesmadebythenation’searlyleadersandthefragilenatureofthecountry’sinfancy.MoresignificantlytheyarguethatmanyoftheFoundingFathersknewslaverywaswrong--andyetmostdidlittletofightit. Morethananythingthehistorianssaythefounderswerehamperedbythecultureoftheirtime.WhileWashingtonandJeffersonprivatelyexpresseddistasteforslaverytheyalsounderstoodthatitwaspartofthepoliticalandeconomicbedrockofthecountrytheyhelpedtocreate. ForonethingtheSouthcouldnotaffordtopartwithitsslaves.Owningslaveswas"likehavingalargebankaccount"saysWiencekauthorofAnImperfectGod:GeorgeWashingtonHisSlavesandtheCreationofAmerica.’ThesouthernstateswouldnothavesignedtheConstitutionwithoutprotectionsforthe"peculiarinstitution"includingaclausethatcountedaslaveasthreefifthsofamanforpurposesofcongressionalrepresentation. Andthestatesmen’spoliticallivesdependedonslavery.Thethree-fifthsformulahandedJeffersonhisnarrowvictoryinthepresidentialelectionof1800byinflatingthevotesofthesouthernstatesintheElectoralCollege.OnceinofficeJeffersonextendedslaverywiththeLouisianaPurchasein1803;thenewlandwascarvedinto13statesincludingthreeslavestates. StillJeffersonfreedHemings’schildren—thoughnotHemingsherselforhisapproximately150otherslaves.WashingtonwhohadbeguntobelievethatallmenwerecreatedequalafterobservingthebraveryoftheblacksoldiersduringtheRevolutionaryWarovercamethestrongoppositionofhisrelativestogranthisslavestheirfreedominhiswill.OnlyadecadeearliersuchanactwouldhaverequiredlegislativeapprovalinVirginia. Wemayinferfromthesecondparagraphthat
Intheearly1960sWiltChamberlainwasoneoftheonlythreeplayersintheNationalBasketballAssociationNBAlistedatoversevenfeet.Ifhehadplayedlastseasonhoweverhewouldhavebeenoneof42.Thebodiesplayingmajorprofessionalsportshavechangeddramaticallyovertheyearsandmanagershavebeenmorethanwillingtoadjustteamuniformstofitthegrowingnumbersofbiggerlongerframes. Thetrendinsportsthoughmaybeobscuringanunrecognizedreality:Americanshavegenerallystoppedgrowing.Thoughtypicallyabouttwoinchestallernowthan140yearsagotoday’speople—especiallythoseborntofamilieswhohavelivedintheU.S.formanygenerations--apparentlyreachedtheirlimitintheearly1960s.Andtheyaren’tlikelytogetanytaller."Inthegeneralpopulationto-dayatthisgeneticenvironmentallevelwe’veprettymuchgoneasfaraswecango"saysanthropologistWilliamCameronChumleaofWrightStateUniversity.InthecaseofNBAplayerstheirin-creaseinheightappearstoresultfromtheincreasinglycommonpracticeofrecruitingplayersfromallovertheworld. Growthwhichrarelycontinuesbeyondtheageof20demandscaloriesandnutrients—notablyprotein—tofeedexpandingtissues.Atthestartofthe20thcenturyunder-nutritionandchildhoodinfectionsgotintheway.Butasdietandhealthimprovedchildrenandadolescentshaveonaverageincreasedinheightbyaboutaninchandahalfevery20yearsapatternknownastheseculartrendinheight.YetaccordingtotheCentersforDiseaseControlandPreventionaverageheight—5’9"formen5’4"forwomen—hasn’treallychangedsince1960. Geneticallyspeakingthereareadvantagestoavoidingsubstantialheight.Duringchildbirthlargerbabieshavemoredifficultypassingthroughthebirthcanal.Moreovereventhoughhumanshavebeenuprightformillionsofyearsourfeetandbackcontinuetostrugglewithbipedalpostureandcan-noteasilywithstandrepeatedstrainimposedbyoversizelimbs."Therearesomerealconstraintsthataresetbythegeneticarchitectureoftheindividualorganism"saysanthropologistWilliamLeonardofNorthwesternUniversity. Geneticmaximumscanchangebutdon’texpectthistohappensoon.ClaireC.GordonsenioranthropologistattheArmyResearchCenterinNatickMass.ensuresthat90percentoftheuniformsandworkstationsfitrecruitswithoutalteration.Shesaysthatunlikethoseforbasketballthelengthofmilitaryuniformshasnotchangedforsometime.AndifyouneedtopredicthumanheightinthenearfuturetodesignapieceofequipmentGordonsaysthatbyandlarge"youcouldusetoday’sdataandfeelfairlyconfident." Onwhichofthefollowingstatementswouldtheauthormostprobablyagree
Directions: Inthefollowingtext.somesegmentshavebeenremoved.ForQuestions41-45.choosethemostsuitableonefromthelistA-Gtofitintoeachofthenumberedblanks.Therearetwoextrachoices.whichdonotfitinanyoftheblanks.MarkyouranswersonANSWERSHEET1. Thetimeforsharpeningpencilsarrangingyourdeskanddoingalmostanythingelseinsteadofwritinghasended.Thefirstdraftwillappearonthepageonlyifyoustopavoidingtheinevitableandsitstanduporliedowntowrite.41______ Beflexible.Youroutlineshouldsmoothlyconductyoufromonepointtothenextbutdonotpermitittorailroadyou.Ifarelevantandimportantideaoccurstoyounowworkitintothedraft.42______Grammarpunctuationandspellingcanwaituntilyourevise.Concentrateonwhatyouaresaying.Goodwritingmostoftenoccurswhenyouareinhotpursuitofanidearatherthaninanervoussearchforerrors. 43______Yourpageswillbeeasiertokeeptrackofthatwayandifyouhavetoclipaparagraphtoplaceitelsewhereyouwillnotloseanywritingontheotherside. Ifyouareworkingonawordprocessoryoucantakeadvantageofitscapacitytomakeadditionsanddeletionsaswellasmoveentireparagraphsbymakingjustafewsimplekeyboardcommands.Somesoftwareprogramscanalsocheckspellingandcertaingrammaticalelementsinyour’writing.44______Theseprintoutsarealsoeasiertoreadthanthescreenwhenyouworkonrevisions. Onceyouhaveafirstdraftonpaperyoucandeletematerialthatisunrelatedtoyourthesisandaddmaterialnecessarytoillustrateyourpointsandmakeyourpaperconvincing.Thestudentwhowrote"TheA&PasaStateofMind"wiselydroppedaparagraphthatquestionedwhetherSammydisplayschauvinisticattitudestowardwomen.45______ Rememberthatyourinitialdraftisonlythat.Youshouldgothroughthepapermanytimes—andthenagainworkingtosubstantiateandclarifyyourideas.Youmayevenendupwithseveralentireversionsofthepaper.Rewrite.Thesentenceswithineachparagraphshouldberelatedtoasingletopic.Transitionsshouldconnectoneparagraphtothenextsothattherearenoabruptorconfusingshifts.Awkwardorwordyphrasingorunclearsentencesandparagraphsshouldbemercilesslypokedandproddedintoshape. [A]Tomakerevisingeasierleavewidemarginsandextraspacebetweenlinessothatyoucaneasilyaddwordssentencesandcorrections.Writeononlyonesideofthepaper. [B]Afteryouhaveclearlyandadequatelydevelopedthebodyofyourpaperpayparticularattentiontotheintroductoryandconcludingparagraphs.It’sprobablybesttowritetheintroductionlastafteryouknowpreciselywhatyouareintroducing.Concludingparagraphsdemandequalattentionbecausetheyleavethereaderwithafinalimpression. [C]It’sworthrememberinghoweverthatthoughacleancopyfreshoffaprintermaylookterrificitwillreadonlyaswellasthethinkingandwritingthathavegoneintoit.Manywritersprudentlystoretheirdataondisksandprinttheirpageseachtimetheyfinishadrafttoavoidlosinganymaterialbecauseofpowerfailuresorotherproblems. [D]Itmakesnodifferencehowyouwritejustsoyoudo.Nowthatyouhavedevelopedatopicintoatentativethesisyoucanassembleyournotesandbegintofleshoutwhateveroutlineyouhavemade. [E]AlthoughthisisaninterestingissueithasnothingtodowiththethesiswhichexplainshowthesettinginfluencesSammy’sdecisiontoquithisjob.InsteadofincludingthatparagraphsheaddedonethatdescribedLengel’scrabbedresponsetothegirlssothatshecouldleaduptotheA&P"policy"heenforces. [F]Inthefinalparagraphaboutthesignificanceofthesettingin"A&P"thestudentbringstogetherthereasonsSammyquithisjobbyreferringtohisrefusaltoacceptLengel’sstorepolicies. [G]Byusingthefirstdraftasameansofthinkingaboutwhatyouwanttosayyouwillverylikelydiscovermorethanyournotesoriginallysuggested.Plentyofgoodwritersdon’tuseoutlinesatallbutdiscoverorderingprinciplesastheywrite.Donotattempttocomposeaperfectlycorrectdraftthefirsttimearound. 43
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Directions: Inthefollowingtext.somesegmentshavebeenremoved.ForQuestions41-45.choosethemostsuitableonefromthelistA-Gtofitintoeachofthenumberedblanks.Therearetwoextrachoices.whichdonotfitinanyoftheblanks.MarkyouranswersonANSWERSHEET1. Thetimeforsharpeningpencilsarrangingyourdeskanddoingalmostanythingelseinsteadofwritinghasended.Thefirstdraftwillappearonthepageonlyifyoustopavoidingtheinevitableandsitstanduporliedowntowrite.41______ Beflexible.Youroutlineshouldsmoothlyconductyoufromonepointtothenextbutdonotpermitittorailroadyou.Ifarelevantandimportantideaoccurstoyounowworkitintothedraft.42______Grammarpunctuationandspellingcanwaituntilyourevise.Concentrateonwhatyouaresaying.Goodwritingmostoftenoccurswhenyouareinhotpursuitofanidearatherthaninanervoussearchforerrors. 43______Yourpageswillbeeasiertokeeptrackofthatwayandifyouhavetoclipaparagraphtoplaceitelsewhereyouwillnotloseanywritingontheotherside. Ifyouareworkingonawordprocessoryoucantakeadvantageofitscapacitytomakeadditionsanddeletionsaswellasmoveentireparagraphsbymakingjustafewsimplekeyboardcommands.Somesoftwareprogramscanalsocheckspellingandcertaingrammaticalelementsinyour’writing.44______Theseprintoutsarealsoeasiertoreadthanthescreenwhenyouworkonrevisions. Onceyouhaveafirstdraftonpaperyoucandeletematerialthatisunrelatedtoyourthesisandaddmaterialnecessarytoillustrateyourpointsandmakeyourpaperconvincing.Thestudentwhowrote"TheA&PasaStateofMind"wiselydroppedaparagraphthatquestionedwhetherSammydisplayschauvinisticattitudestowardwomen.45______ Rememberthatyourinitialdraftisonlythat.Youshouldgothroughthepapermanytimes—andthenagainworkingtosubstantiateandclarifyyourideas.Youmayevenendupwithseveralentireversionsofthepaper.Rewrite.Thesentenceswithineachparagraphshouldberelatedtoasingletopic.Transitionsshouldconnectoneparagraphtothenextsothattherearenoabruptorconfusingshifts.Awkwardorwordyphrasingorunclearsentencesandparagraphsshouldbemercilesslypokedandproddedintoshape. [A]Tomakerevisingeasierleavewidemarginsandextraspacebetweenlinessothatyoucaneasilyaddwordssentencesandcorrections.Writeononlyonesideofthepaper. [B]Afteryouhaveclearlyandadequatelydevelopedthebodyofyourpaperpayparticularattentiontotheintroductoryandconcludingparagraphs.It’sprobablybesttowritetheintroductionlastafteryouknowpreciselywhatyouareintroducing.Concludingparagraphsdemandequalattentionbecausetheyleavethereaderwithafinalimpression. [C]It’sworthrememberinghoweverthatthoughacleancopyfreshoffaprintermaylookterrificitwillreadonlyaswellasthethinkingandwritingthathavegoneintoit.Manywritersprudentlystoretheirdataondisksandprinttheirpageseachtimetheyfinishadrafttoavoidlosinganymaterialbecauseofpowerfailuresorotherproblems. [D]Itmakesnodifferencehowyouwritejustsoyoudo.Nowthatyouhavedevelopedatopicintoatentativethesisyoucanassembleyournotesandbegintofleshoutwhateveroutlineyouhavemade. [E]AlthoughthisisaninterestingissueithasnothingtodowiththethesiswhichexplainshowthesettinginfluencesSammy’sdecisiontoquithisjob.InsteadofincludingthatparagraphsheaddedonethatdescribedLengel’scrabbedresponsetothegirlssothatshecouldleaduptotheA&P"policy"heenforces. [F]Inthefinalparagraphaboutthesignificanceofthesettingin"A&P"thestudentbringstogetherthereasonsSammyquithisjobbyreferringtohisrefusaltoacceptLengel’sstorepolicies. [G]Byusingthefirstdraftasameansofthinkingaboutwhatyouwanttosayyouwillverylikelydiscovermorethanyournotesoriginallysuggested.Plentyofgoodwritersdon’tuseoutlinesatallbutdiscoverorderingprinciplesastheywrite.Donotattempttocomposeaperfectlycorrectdraftthefirsttimearound. 45
In1784fiveyearsbeforehebecamepresidentoftheUnitedStatesGeorgeWashington52wasnearlytoothless.Sohehiredadentisttotransplantnineteethintohisjaw—havingextractedthemfromthemouthsofhisslaves. That’safardifferentimagefromthecherry-tree-choppingGeorgemostpeoplerememberfromtheirhistorybooks.Butrecentlymanyhistorianshavebeguntofocusontherolesslaveryplayedinthelivesofthefoundinggeneration.TheyhavebeenspurredinpartbyDNAevidencemadeavailablein1998whichalmostcertainlyprovedThomasJeffersonhadfatheredatleastonechildwithhisslaveSallyHemings.Andonlyoverthepast30yearshavescholarsexaminedhistoryfromthebottomup.Worksofseveralhistoriansrevealthemoralcompromisesmadebythenation’searlyleadersandthefragilenatureofthecountry’sinfancy.MoresignificantlytheyarguethatmanyoftheFoundingFathersknewslaverywaswrong--andyetmostdidlittletofightit. Morethananythingthehistorianssaythefounderswerehamperedbythecultureoftheirtime.WhileWashingtonandJeffersonprivatelyexpresseddistasteforslaverytheyalsounderstoodthatitwaspartofthepoliticalandeconomicbedrockofthecountrytheyhelpedtocreate. ForonethingtheSouthcouldnotaffordtopartwithitsslaves.Owningslaveswas"likehavingalargebankaccount"saysWiencekauthorofAnImperfectGod:GeorgeWashingtonHisSlavesandtheCreationofAmerica.’ThesouthernstateswouldnothavesignedtheConstitutionwithoutprotectionsforthe"peculiarinstitution"includingaclausethatcountedaslaveasthreefifthsofamanforpurposesofcongressionalrepresentation. Andthestatesmen’spoliticallivesdependedonslavery.Thethree-fifthsformulahandedJeffersonhisnarrowvictoryinthepresidentialelectionof1800byinflatingthevotesofthesouthernstatesintheElectoralCollege.OnceinofficeJeffersonextendedslaverywiththeLouisianaPurchasein1803;thenewlandwascarvedinto13statesincludingthreeslavestates. StillJeffersonfreedHemings’schildren—thoughnotHemingsherselforhisapproximately150otherslaves.WashingtonwhohadbeguntobelievethatallmenwerecreatedequalafterobservingthebraveryoftheblacksoldiersduringtheRevolutionaryWarovercamethestrongoppositionofhisrelativestogranthisslavestheirfreedominhiswill.OnlyadecadeearliersuchanactwouldhaverequiredlegislativeapprovalinVirginia. Whichofthefollowingistrueaccordingtothetext
Intheearly1960sWiltChamberlainwasoneoftheonlythreeplayersintheNationalBasketballAssociationNBAlistedatoversevenfeet.Ifhehadplayedlastseasonhoweverhewouldhavebeenoneof42.Thebodiesplayingmajorprofessionalsportshavechangeddramaticallyovertheyearsandmanagershavebeenmorethanwillingtoadjustteamuniformstofitthegrowingnumbersofbiggerlongerframes. Thetrendinsportsthoughmaybeobscuringanunrecognizedreality:Americanshavegenerallystoppedgrowing.Thoughtypicallyabouttwoinchestallernowthan140yearsagotoday’speople—especiallythoseborntofamilieswhohavelivedintheU.S.formanygenerations--apparentlyreachedtheirlimitintheearly1960s.Andtheyaren’tlikelytogetanytaller."Inthegeneralpopulationto-dayatthisgeneticenvironmentallevelwe’veprettymuchgoneasfaraswecango"saysanthropologistWilliamCameronChumleaofWrightStateUniversity.InthecaseofNBAplayerstheirin-creaseinheightappearstoresultfromtheincreasinglycommonpracticeofrecruitingplayersfromallovertheworld. Growthwhichrarelycontinuesbeyondtheageof20demandscaloriesandnutrients—notablyprotein—tofeedexpandingtissues.Atthestartofthe20thcenturyunder-nutritionandchildhoodinfectionsgotintheway.Butasdietandhealthimprovedchildrenandadolescentshaveonaverageincreasedinheightbyaboutaninchandahalfevery20yearsapatternknownastheseculartrendinheight.YetaccordingtotheCentersforDiseaseControlandPreventionaverageheight—5’9"formen5’4"forwomen—hasn’treallychangedsince1960. Geneticallyspeakingthereareadvantagestoavoidingsubstantialheight.Duringchildbirthlargerbabieshavemoredifficultypassingthroughthebirthcanal.Moreovereventhoughhumanshavebeenuprightformillionsofyearsourfeetandbackcontinuetostrugglewithbipedalpostureandcan-noteasilywithstandrepeatedstrainimposedbyoversizelimbs."Therearesomerealconstraintsthataresetbythegeneticarchitectureoftheindividualorganism"saysanthropologistWilliamLeonardofNorthwesternUniversity. Geneticmaximumscanchangebutdon’texpectthistohappensoon.ClaireC.GordonsenioranthropologistattheArmyResearchCenterinNatickMass.ensuresthat90percentoftheuniformsandworkstationsfitrecruitswithoutalteration.Shesaysthatunlikethoseforbasketballthelengthofmilitaryuniformshasnotchangedforsometime.AndifyouneedtopredicthumanheightinthenearfuturetodesignapieceofequipmentGordonsaysthatbyandlarge"youcouldusetoday’sdataandfeelfairlyconfident." WiltChamberlainiscitedasanexampleto
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Intheearly1960sWiltChamberlainwasoneoftheonlythreeplayersintheNationalBasketballAssociationNBAlistedatoversevenfeet.Ifhehadplayedlastseasonhoweverhewouldhavebeenoneof42.Thebodiesplayingmajorprofessionalsportshavechangeddramaticallyovertheyearsandmanagershavebeenmorethanwillingtoadjustteamuniformstofitthegrowingnumbersofbiggerlongerframes. Thetrendinsportsthoughmaybeobscuringanunrecognizedreality:Americanshavegenerallystoppedgrowing.Thoughtypicallyabouttwoinchestallernowthan140yearsagotoday’speople—especiallythoseborntofamilieswhohavelivedintheU.S.formanygenerations--apparentlyreachedtheirlimitintheearly1960s.Andtheyaren’tlikelytogetanytaller."Inthegeneralpopulationto-dayatthisgeneticenvironmentallevelwe’veprettymuchgoneasfaraswecango"saysanthropologistWilliamCameronChumleaofWrightStateUniversity.InthecaseofNBAplayerstheirin-creaseinheightappearstoresultfromtheincreasinglycommonpracticeofrecruitingplayersfromallovertheworld. Growthwhichrarelycontinuesbeyondtheageof20demandscaloriesandnutrients—notablyprotein—tofeedexpandingtissues.Atthestartofthe20thcenturyunder-nutritionandchildhoodinfectionsgotintheway.Butasdietandhealthimprovedchildrenandadolescentshaveonaverageincreasedinheightbyaboutaninchandahalfevery20yearsapatternknownastheseculartrendinheight.YetaccordingtotheCentersforDiseaseControlandPreventionaverageheight—5’9"formen5’4"forwomen—hasn’treallychangedsince1960. Geneticallyspeakingthereareadvantagestoavoidingsubstantialheight.Duringchildbirthlargerbabieshavemoredifficultypassingthroughthebirthcanal.Moreovereventhoughhumanshavebeenuprightformillionsofyearsourfeetandbackcontinuetostrugglewithbipedalpostureandcan-noteasilywithstandrepeatedstrainimposedbyoversizelimbs."Therearesomerealconstraintsthataresetbythegeneticarchitectureoftheindividualorganism"saysanthropologistWilliamLeonardofNorthwesternUniversity. Geneticmaximumscanchangebutdon’texpectthistohappensoon.ClaireC.GordonsenioranthropologistattheArmyResearchCenterinNatickMass.ensuresthat90percentoftheuniformsandworkstationsfitrecruitswithoutalteration.Shesaysthatunlikethoseforbasketballthelengthofmilitaryuniformshasnotchangedforsometime.AndifyouneedtopredicthumanheightinthenearfuturetodesignapieceofequipmentGordonsaysthatbyandlarge"youcouldusetoday’sdataandfeelfairlyconfident." Thetextintendstotellusthat
生产可能性曲线向外凸出的原因是
Directions: Inthefollowingtext.somesegmentshavebeenremoved.ForQuestions41-45.choosethemostsuitableonefromthelistA-Gtofitintoeachofthenumberedblanks.Therearetwoextrachoices.whichdonotfitinanyoftheblanks.MarkyouranswersonANSWERSHEET1. Thetimeforsharpeningpencilsarrangingyourdeskanddoingalmostanythingelseinsteadofwritinghasended.Thefirstdraftwillappearonthepageonlyifyoustopavoidingtheinevitableandsitstanduporliedowntowrite.41______ Beflexible.Youroutlineshouldsmoothlyconductyoufromonepointtothenextbutdonotpermitittorailroadyou.Ifarelevantandimportantideaoccurstoyounowworkitintothedraft.42______Grammarpunctuationandspellingcanwaituntilyourevise.Concentrateonwhatyouaresaying.Goodwritingmostoftenoccurswhenyouareinhotpursuitofanidearatherthaninanervoussearchforerrors. 43______Yourpageswillbeeasiertokeeptrackofthatwayandifyouhavetoclipaparagraphtoplaceitelsewhereyouwillnotloseanywritingontheotherside. Ifyouareworkingonawordprocessoryoucantakeadvantageofitscapacitytomakeadditionsanddeletionsaswellasmoveentireparagraphsbymakingjustafewsimplekeyboardcommands.Somesoftwareprogramscanalsocheckspellingandcertaingrammaticalelementsinyour’writing.44______Theseprintoutsarealsoeasiertoreadthanthescreenwhenyouworkonrevisions. Onceyouhaveafirstdraftonpaperyoucandeletematerialthatisunrelatedtoyourthesisandaddmaterialnecessarytoillustrateyourpointsandmakeyourpaperconvincing.Thestudentwhowrote"TheA&PasaStateofMind"wiselydroppedaparagraphthatquestionedwhetherSammydisplayschauvinisticattitudestowardwomen.45______ Rememberthatyourinitialdraftisonlythat.Youshouldgothroughthepapermanytimes—andthenagainworkingtosubstantiateandclarifyyourideas.Youmayevenendupwithseveralentireversionsofthepaper.Rewrite.Thesentenceswithineachparagraphshouldberelatedtoasingletopic.Transitionsshouldconnectoneparagraphtothenextsothattherearenoabruptorconfusingshifts.Awkwardorwordyphrasingorunclearsentencesandparagraphsshouldbemercilesslypokedandproddedintoshape. [A]Tomakerevisingeasierleavewidemarginsandextraspacebetweenlinessothatyoucaneasilyaddwordssentencesandcorrections.Writeononlyonesideofthepaper. [B]Afteryouhaveclearlyandadequatelydevelopedthebodyofyourpaperpayparticularattentiontotheintroductoryandconcludingparagraphs.It’sprobablybesttowritetheintroductionlastafteryouknowpreciselywhatyouareintroducing.Concludingparagraphsdemandequalattentionbecausetheyleavethereaderwithafinalimpression. [C]It’sworthrememberinghoweverthatthoughacleancopyfreshoffaprintermaylookterrificitwillreadonlyaswellasthethinkingandwritingthathavegoneintoit.Manywritersprudentlystoretheirdataondisksandprinttheirpageseachtimetheyfinishadrafttoavoidlosinganymaterialbecauseofpowerfailuresorotherproblems. [D]Itmakesnodifferencehowyouwritejustsoyoudo.Nowthatyouhavedevelopedatopicintoatentativethesisyoucanassembleyournotesandbegintofleshoutwhateveroutlineyouhavemade. [E]AlthoughthisisaninterestingissueithasnothingtodowiththethesiswhichexplainshowthesettinginfluencesSammy’sdecisiontoquithisjob.InsteadofincludingthatparagraphsheaddedonethatdescribedLengel’scrabbedresponsetothegirlssothatshecouldleaduptotheA&P"policy"heenforces. [F]Inthefinalparagraphaboutthesignificanceofthesettingin"A&P"thestudentbringstogetherthereasonsSammyquithisjobbyreferringtohisrefusaltoacceptLengel’sstorepolicies. [G]Byusingthefirstdraftasameansofthinkingaboutwhatyouwanttosayyouwillverylikelydiscovermorethanyournotesoriginallysuggested.Plentyofgoodwritersdon’tuseoutlinesatallbutdiscoverorderingprinciplesastheywrite.Donotattempttocomposeaperfectlycorrectdraftthefirsttimearound. 41
PartC InhisautobiographyDarwinhimselfspeaksofhisintellectualpowerswithextraordinarymodesty.Hepointsoutthathealwaysexperiencedmuchdifficultyinexpressinghimselfclearlyandconciselybut46hebelievesthatthisverydifficultymayhavehadthecompensatingadvantageofforcinghimtothinklongandintentlyabouteverysentenceandthusenablinghimtodetecterrorsinreasoningandinhisownobservations.HedisclaimedthepossessionofanygreatquicknessofapprehensionorwitsuchasdistinguishedHuxley.47Heassertedalsothathispowertofollowalongandpurelyabstracttrainofthoughtwasverylimitedforwhichreasonhefeltcertainthathenevercouldhavesucceededwithmathematics.Hismemorytoohedescribedasextensivebuthazy.Sopoorinonesensewasifthathenevercouldrememberformorethanafewdaysasingledateoralineofpoetry.48Ontheotherhandhedidnotacceptaswellfoundedthechargemadebysomeofhiscriticsthatwhilehewasagoodobserverhehadnopowerofreasoning.Thishethoughtcouldnotbetruebecausethe"Originofspecies"isonelongargumentfromthebeginningtotheendandhasconvincedmanyablemen.NOonehesubmitscouldhavewrittenitwithoutpossessingsomepowerofreasoning.Hewaswillingtoassertthat"IhaveafairshareofinventionandofcommonsenseorjudgmentsuchaseveryfairlysuccessfullawyerordoctormusthavebutnotIbelieveinanyhigherdegree."49Headdshumblythatperhapshewas"superiortothecommonrunofmeninnoticingthingswhicheasilyescapeattentionandinobservingthemcarefully." Writinginthelastyearofhislifeheexpressedtheopinionthatintwoorthreerespectshismindhadchangedduringtheprecedingtwentyorthirtyyears.Uptotheageofthirtyorbeyonditpoetryofmanykindsgavehimgreatpleasure.Formerlytoopictureshadgivenhimconsiderableandmusicverygreatdelight.In1881howeverhesaid:"NowformanyyearsIcannotenduretoreadalineofpoetry.Ihavealsoalmostlostmytasteforpicturesormusic."50Darwinwasconvincedthatthelossofthesetasteswasnotonlyalossofhappinessbutmightpossiblybeinjurioustotheintellectandmoreprobablytothemoralcharacter. Heassertedalsothathispowertofollowalongandpurelyabstracttrainofthoughtwasverylimitedforwhichreasonhefeltcertainthathenevercouldhavesucceededwithmathematics
PartC InhisautobiographyDarwinhimselfspeaksofhisintellectualpowerswithextraordinarymodesty.Hepointsoutthathealwaysexperiencedmuchdifficultyinexpressinghimselfclearlyandconciselybut46hebelievesthatthisverydifficultymayhavehadthecompensatingadvantageofforcinghimtothinklongandintentlyabouteverysentenceandthusenablinghimtodetecterrorsinreasoningandinhisownobservations.HedisclaimedthepossessionofanygreatquicknessofapprehensionorwitsuchasdistinguishedHuxley.47Heassertedalsothathispowertofollowalongandpurelyabstracttrainofthoughtwasverylimitedforwhichreasonhefeltcertainthathenevercouldhavesucceededwithmathematics.Hismemorytoohedescribedasextensivebuthazy.Sopoorinonesensewasifthathenevercouldrememberformorethanafewdaysasingledateoralineofpoetry.48Ontheotherhandhedidnotacceptaswellfoundedthechargemadebysomeofhiscriticsthatwhilehewasagoodobserverhehadnopowerofreasoning.Thishethoughtcouldnotbetruebecausethe"Originofspecies"isonelongargumentfromthebeginningtotheendandhasconvincedmanyablemen.NOonehesubmitscouldhavewrittenitwithoutpossessingsomepowerofreasoning.Hewaswillingtoassertthat"IhaveafairshareofinventionandofcommonsenseorjudgmentsuchaseveryfairlysuccessfullawyerordoctormusthavebutnotIbelieveinanyhigherdegree."49Headdshumblythatperhapshewas"superiortothecommonrunofmeninnoticingthingswhicheasilyescapeattentionandinobservingthemcarefully." Writinginthelastyearofhislifeheexpressedtheopinionthatintwoorthreerespectshismindhadchangedduringtheprecedingtwentyorthirtyyears.Uptotheageofthirtyorbeyonditpoetryofmanykindsgavehimgreatpleasure.Formerlytoopictureshadgivenhimconsiderableandmusicverygreatdelight.In1881howeverhesaid:"NowformanyyearsIcannotenduretoreadalineofpoetry.Ihavealsoalmostlostmytasteforpicturesormusic."50Darwinwasconvincedthatthelossofthesetasteswasnotonlyalossofhappinessbutmightpossiblybeinjurioustotheintellectandmoreprobablytothemoralcharacter. Headdshumblythatperhapshewassuperiortothecommonrunofmeninnoticingthingswhicheasilyescapeattentionandinobservingthemcarefully.
根据新的政府采购法有人认为政府采购是行政合同有人却认为是民事合同结合政府采购法的内容你认为我国政府采购是行政合同还是民事合同20分
Directions: YouhavejustcomebackfromCanadaandfoundamusicCDinyourluggagethatyouforgottore-turntoBobyourlandlordthere.Writehimaletterto 1makeanapologyand 2suggestasolution. Youshouldwriteabout100wordsonANSWERSHEET2. Donotsignyourownnameattheendoftheletter.Use"LiMing"instead. Donotwritetheaddress.10points
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