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Text4 TheWorldHealthOrganizationsaysas manyas10millionpersonsworldwidemayhavethevirus病毒thatcausesAIDS. Expertsbelieveabout350thousandpersonshavethedisease.Andonemillion moremaygetitinthenextfiveyears.IntheUnitedStatesabout50000 personshavediedwithAIDS.Thecountry’stopmedicalofficialsaysmorethan 90percentofallAmericanswhohadtheAIDSvirusfiveyearsagoare dead.ThereisnocureforAIDSandnovaccine疫苗medicineto preventit.HoweverresearchersknowmuchmoreaboutAIDSthantheydidjusta fewyearsago.WenowknowthatAIDSiscausedbyavirus.Thevirusinvades healthycellsincludingwhitebloodcellsthatarepartofourdefensesystem againstdisease.Ittakescontrolofthehealthycell’sgenetic遗传的materialand forcesthecelltomakeacopyofthevirus.Thecellthendies.Andtheviral particlesmoveontoinvadeandkillmorehealthycells.The AIDSvirusiscarriedinaperson’sbodyfluids.Theviruscanbepassed sexuallyorbysharinginstrumentsusedtotakeintravenous静脉内的drugs.It alsocanbepassedinbloodproductsorfromapregnantwomanwithAIDStoher developingbaby.ManystoriesaboutthespreadofAIDSare false.YoucannotgetAIDSbyworkingorattendingschoolwithsomeonewhohas thedisease.Youcannotgetitbytouchingdrinkingglassesorotherobjects usedbysuchpersons.ExpertssaynoonehasgottenAIDSbylivingwithcaring forortouchinganAIDSpatient.Thereareseveralwarningsigns ofanAIDSinfection.Theyincludealwaysfeelingtiredunexplainedweightloss anduncontrolledexpulsionofbodywastes大小便失禁.Otherwarningsarethe appearanceofwhiteareasonthemouthdarkredareasofskinthatdonot disappearandahigherthannormalbody temperature.ConcerningthewaystheAIDSviruscanbepassedwhichofthefollowingstatementsiswrong
IntheUnitedStatestodaycoffeeisa morepopulardrink1teabutteaplayed2 interestingpartinthehistoryoftheUnitedStates.Beforetheywon their3fromBritainthecolonistswereforcedto 4taxesonmanygoodsimportedintoAmerica.Thetaxmoney was5tosupportcolonialgovernorsandofficialssentto thecoloniesbytheBritish.In1770theBritishPrimeMinisterhadrepealed mostofthetaxesbutKingGeorge6onretainingthetax 7tea.TheKingsawthetaxasa8 oftheBritishrighttotaxthecolonies.Americanmerchants9 smugglednine-tenthsofAmerica’steaintothecountryand 10payingthetaxes.11 thetaxsavingsthepriceoftearemainedexpensivedue.to 12shippingcosts.WhentheBritishParliament 13anewlawwhichwouldallowBritishcompaniestoimport teamore14thanAmericanshippingcompaniesthe 15werealarmedandthey16a protest.InBostoncitizensandmerchantswho17 disguisedasIndiansboardedaBritishshipand18＄15000 worthofteaintotheharbor.Thisprotest19Great BritainisknownastheBostonTeaParty.Itwasoneoftheearliestactsof 20againstBritishrule.
IntheUnitedStatestodaycoffeeisa morepopulardrink1teabutteaplayed2 interestingpartinthehistoryoftheUnitedStates.Beforetheywon their3fromBritainthecolonistswereforcedto 4taxesonmanygoodsimportedintoAmerica.Thetaxmoney was5tosupportcolonialgovernorsandofficialssentto thecoloniesbytheBritish.In1770theBritishPrimeMinisterhadrepealed mostofthetaxesbutKingGeorge6onretainingthetax 7tea.TheKingsawthetaxasa8 oftheBritishrighttotaxthecolonies.Americanmerchants9 smugglednine-tenthsofAmerica’steaintothecountryand 10payingthetaxes.11 thetaxsavingsthepriceoftearemainedexpensivedue.to 12shippingcosts.WhentheBritishParliament 13anewlawwhichwouldallowBritishcompaniestoimport teamore14thanAmericanshippingcompaniesthe 15werealarmedandthey16a protest.InBostoncitizensandmerchantswho17 disguisedasIndiansboardedaBritishshipand18＄15000 worthofteaintotheharbor.Thisprotest19Great BritainisknownastheBostonTeaParty.Itwasoneoftheearliestactsof 20againstBritishrule.
41__________.Intoday’sprosperoussocietiesthedistinction hasbecomeblurredbecausesomanywantshavebeenturnedintoneeds.Awriter forinstancecanworkwithpaperandpencils.Thesearelegitimateneedsfor thetask.Buttheworkcanbedonemorequicklyandefficientlywithaword processor.Thusacomputerissoonviewedasaneedratherthana want.42__________.Thetwomaincategoriesareconvenience goodsandshoppinggoods.Twolessertypesarespecialtygoodsandunsought goods.Itmustbeemphasizedthatallofthesetypesarebasedontheway shoppersthinkaboutproductsnotonthenatureoftheproductsthemselves. WhatisregardedasaconvenienceiteminFrancewineforexamplemaybea specialtygoodsintheUnitedStates.Peopledonotspenda greatdealoftimeshoppingforsuchconvenienceitemsasgroceriesnewspapers toothpasterazorbladesaspirinandcandy.Thebuyingofconveniencegoods maybedoneroutinelyassomefamiliesbuygroceriesonceaweek.Such regularlypurchaseditemsarecalledstaples.Sometimesconvenienceproductsare boughtonimpulse:someonehasasuddendesireforanicecreamsundaeonahot day.43__________.Shoppinggoodsareitemsforwhich customerssearch.Theycomparepricesqualityandstylesandmayvisita numberofstoresbeforemakingadecision.44__________. Shoppinggoodsfallintotwoclasses:thosethatareperceivedas basicallythesameandthosethatareregardedasdifferent.Itemsthatare lookeduponasbasicallythesameincludesuchthingsashomeappliances televisionsetsandautomobiles.Havingdecidedonthemodeldesiredthe customerisprimarilyinterestedingettingtheitematthemostfavorable price.Itemsregardedasinherentlydifferentincludeclothingfurnitureand dishes.Qualitystyleandfashionwilleithertakeprecedenceoverpriceor theywillnotmatteratall.Specialtygoodshave characteristicsthatimpelcustomerstomakespecialeffortstofindthem.Price maybenoconsiderationatall.Specialtygoodscanincludealmostanykindof product.Normallyspecialtygoodshaveabrandnameorotherdistinguishing characteristics.Unsoughtgoodsareitemsaconsumerdoesnot necessarilywantorneedormaynotevenknowabout.Promotionoradvertising bringssuchgoodstotheconsumer’sattention.45__________.[A]Inthe fieldofmarketingconsumergoodsareclassedaccordingtothewayinwhich theyarepurchased.[B]Ortheymaybepurchasedasemergencyitems.[C] Whatitreallydoesisgiveunprecedentedinsightintotheconsumermind.Andit willactuallyresultinhigherproductsales.[D]Theproductcouldbe somethingnewonthemarketastheSonyWalkmanoncewasoritmaybeafairly standardservicesuchaslifeinsuranceforwhichmostpeoplewillusuallynot bothershopping.[E]Buyinganautomobileisoftendonethisway.[F]The traditionaldistinctionbetweenproductsthatsatisfyneedsandthosethat satisfywantsisnolongeradequatetodescribeclassesofproducts.[G] Theseproprietaryannualsurveysaddressshoppingfrequencystorepreference shopperprofilespurchasepatternsanddriversofshoppingbehavior.
IntheUnitedStatestodaycoffeeisa morepopulardrink1teabutteaplayed2 interestingpartinthehistoryoftheUnitedStates.Beforetheywon their3fromBritainthecolonistswereforcedto 4taxesonmanygoodsimportedintoAmerica.Thetaxmoney was5tosupportcolonialgovernorsandofficialssentto thecoloniesbytheBritish.In1770theBritishPrimeMinisterhadrepealed mostofthetaxesbutKingGeorge6onretainingthetax 7tea.TheKingsawthetaxasa8 oftheBritishrighttotaxthecolonies.Americanmerchants9 smugglednine-tenthsofAmerica’steaintothecountryand 10payingthetaxes.11 thetaxsavingsthepriceoftearemainedexpensivedue.to 12shippingcosts.WhentheBritishParliament 13anewlawwhichwouldallowBritishcompaniestoimport teamore14thanAmericanshippingcompaniesthe 15werealarmedandthey16a protest.InBostoncitizensandmerchantswho17 disguisedasIndiansboardedaBritishshipand18＄15000 worthofteaintotheharbor.Thisprotest19Great BritainisknownastheBostonTeaParty.Itwasoneoftheearliestactsof 20againstBritishrule.
Text3 Francemadesoccerhistoryhereon SundaynightwhentheunderdogsbeatdefendingchampionsBrazil3-0towinthe lastWorldCupthiscenturybeforeadeliriouscrowdof80000people. Thehostnationfullydeservedtheirultimatetriumphteachingastatic Brazilhowtoplaythedisciplinedattackingfootballwhichhascharacterized theircampaignatFrance98.Playersonbothsidesburstintotearsatthefinal whistleFrenchPresidentJacquesChiracraisedhisarmsintriumphand co-organizerMichelPlatinibrokeintoahugegrin.Brazilhadjustplayedtheir worstmatchofthetournament.FrenchcoachAimeJacquetwho nowstepsdownfromthenationalcoachingjobsiad:weareveryproudwe workedveryhardforthis.Wedidn’tjustwanttobefinaliststhe56-year-old manwenton.Wehaveworkedveryhardforthelasttwoyearsandwejustified everythingonthepitch.Wedeservedtowin.We’vegothugefaithinour playerswhohaveimprovedasthetournamenthasgonealong.We’vebeenthrough everythingintheseWorldCupfinalswiththesending-offofZidaneandLaurent Blancandyetwe’vemadeupfortheirabsencesandovercomealltheobstacles. Andtocrownallthatwe’vehadthesending-offtonightofDesailly.Butthis teamhasextraordinaryheart.Francewerethebetterside throughoutthetournament.Theywonalltheirmatchesscoredmoregoalsthan anyoneelseandconcededfewergoalsthananyoneelse—onlytwotoboastthe meanestdefenseofanywinningside.Itwastheperfect finishingtouchforamemorableeveninginworldsportroundedoffby fireworksmassedsingingofLaMarseillaise马赛曲andtheimageofDeschamps holdingtheWorldCuphighabovehishead.Thewordcrownattheendofparagraph3issimiliarinmeaningwith______.
Text2 Thereareseveraladvantagesinmaking computersassmallasonecan.Sometimesweightisparticularlyimportant.A modernaircraftforexamplecarriesquitealoadofelectronicapparatus.If itispossibletomakeanyofthesesmallerandthereforelightertheaircraft cancarryabiggerpay-load.Thiskindofconsiderationappliestospace satellitesandtoallkindsofcomputersthathavetobecarried about.Butweightisnottheonlyfactor.Thesmallerthe computerthefasteritcanwork.Thesignalsgotoandfroataveryhighbut almostconstantspeed.Soifonecanscaledownalldimensionstoletussay onetenththeaveragelengthsofthecurrent-pathswillbereducedtoone tenth.Soveryroughlyspeakingscalingdownofalllineardimensionsinthe ratioofonetotenalsogivesavaluablebonus:thespeedofoperationis scaledup10times.Othertechniquesallowevenfurtherspeed increases.Thisincreaseofoperationisarealadvantage.There aresomeapplicationinwhichcomputerscouldbeusedwhichrequireveryfast responsetimes.Manyofthesearemilitaryofcourse;butmilitaryapplications alsohaveapplicationsinengineeringsoonerorlater.Forexampleautomatic blindlandingofaircraftrequirescontinuouscomputercalculationswhichresult incontroloftheaircraftflight.Themoreimmediatetheresponsesarethe morestablethatcontrolcanbe.Anotheradvantageisthatless powerisrequiredtorunthecomputer.Inspacevehiclesandsatellitesthisis animportantmatter;buteveninatrialapplicationweneednotwastepower. Sometimesacomputertakessomuchpowerthatcoolingsystemswhichrequire stillmorepowerhavetobeinstalledtokeepthecomputerfromgettingtoohot whichwouldincreasetheriskoffaultsdeveloping.Soacomputerwhichdoesnot needtobecooledsavespowerontwocounts.Anotheradvantage isreliability.Mini-computershavebeenmadepossiblebythedevelopmentof integratedcircuits.Insteadofsolderingbitsofwiretojoinseparate componentssuchasresistorsandcapacitorssometimesinthemostintricate networksdesignerscannowproducemanyconnectedcircuitsinoneunitwhich involvesnosolderingandthereforenoriskofbrokenjointsat all.WhichofthefollowingstatementsisNOTtrue
咳嗽咳痰伴有杵状指提示其可能患
IntheUnitedStatestodaycoffeeisa morepopulardrink1teabutteaplayed2 interestingpartinthehistoryoftheUnitedStates.Beforetheywon their3fromBritainthecolonistswereforcedto 4taxesonmanygoodsimportedintoAmerica.Thetaxmoney was5tosupportcolonialgovernorsandofficialssentto thecoloniesbytheBritish.In1770theBritishPrimeMinisterhadrepealed mostofthetaxesbutKingGeorge6onretainingthetax 7tea.TheKingsawthetaxasa8 oftheBritishrighttotaxthecolonies.Americanmerchants9 smugglednine-tenthsofAmerica’steaintothecountryand 10payingthetaxes.11 thetaxsavingsthepriceoftearemainedexpensivedue.to 12shippingcosts.WhentheBritishParliament 13anewlawwhichwouldallowBritishcompaniestoimport teamore14thanAmericanshippingcompaniesthe 15werealarmedandthey16a protest.InBostoncitizensandmerchantswho17 disguisedasIndiansboardedaBritishshipand18＄15000 worthofteaintotheharbor.Thisprotest19Great BritainisknownastheBostonTeaParty.Itwasoneoftheearliestactsof 20againstBritishrule.
IntheUnitedStatestodaycoffeeisa morepopulardrink1teabutteaplayed2 interestingpartinthehistoryoftheUnitedStates.Beforetheywon their3fromBritainthecolonistswereforcedto 4taxesonmanygoodsimportedintoAmerica.Thetaxmoney was5tosupportcolonialgovernorsandofficialssentto thecoloniesbytheBritish.In1770theBritishPrimeMinisterhadrepealed mostofthetaxesbutKingGeorge6onretainingthetax 7tea.TheKingsawthetaxasa8 oftheBritishrighttotaxthecolonies.Americanmerchants9 smugglednine-tenthsofAmerica’steaintothecountryand 10payingthetaxes.11 thetaxsavingsthepriceoftearemainedexpensivedue.to 12shippingcosts.WhentheBritishParliament 13anewlawwhichwouldallowBritishcompaniestoimport teamore14thanAmericanshippingcompaniesthe 15werealarmedandthey16a protest.InBostoncitizensandmerchantswho17 disguisedasIndiansboardedaBritishshipand18＄15000 worthofteaintotheharbor.Thisprotest19Great BritainisknownastheBostonTeaParty.Itwasoneoftheearliestactsof 20againstBritishrule.
Text3 Francemadesoccerhistoryhereon SundaynightwhentheunderdogsbeatdefendingchampionsBrazil3-0towinthe lastWorldCupthiscenturybeforeadeliriouscrowdof80000people. Thehostnationfullydeservedtheirultimatetriumphteachingastatic Brazilhowtoplaythedisciplinedattackingfootballwhichhascharacterized theircampaignatFrance98.Playersonbothsidesburstintotearsatthefinal whistleFrenchPresidentJacquesChiracraisedhisarmsintriumphand co-organizerMichelPlatinibrokeintoahugegrin.Brazilhadjustplayedtheir worstmatchofthetournament.FrenchcoachAimeJacquetwho nowstepsdownfromthenationalcoachingjobsiad:weareveryproudwe workedveryhardforthis.Wedidn’tjustwanttobefinaliststhe56-year-old manwenton.Wehaveworkedveryhardforthelasttwoyearsandwejustified everythingonthepitch.Wedeservedtowin.We’vegothugefaithinour playerswhohaveimprovedasthetournamenthasgonealong.We’vebeenthrough everythingintheseWorldCupfinalswiththesending-offofZidaneandLaurent Blancandyetwe’vemadeupfortheirabsencesandovercomealltheobstacles. Andtocrownallthatwe’vehadthesending-offtonightofDesailly.Butthis teamhasextraordinaryheart.Francewerethebetterside throughoutthetournament.Theywonalltheirmatchesscoredmoregoalsthan anyoneelseandconcededfewergoalsthananyoneelse—onlytwotoboastthe meanestdefenseofanywinningside.Itwastheperfect finishingtouchforamemorableeveninginworldsportroundedoffby fireworksmassedsingingofLaMarseillaise马赛曲andtheimageofDeschamps holdingtheWorldCuphighabovehishead.WhatdoesthewriterthinkoftheBrazilteam
Text2 Thereareseveraladvantagesinmaking computersassmallasonecan.Sometimesweightisparticularlyimportant.A modernaircraftforexamplecarriesquitealoadofelectronicapparatus.If itispossibletomakeanyofthesesmallerandthereforelightertheaircraft cancarryabiggerpay-load.Thiskindofconsiderationappliestospace satellitesandtoallkindsofcomputersthathavetobecarried about.Butweightisnottheonlyfactor.Thesmallerthe computerthefasteritcanwork.Thesignalsgotoandfroataveryhighbut almostconstantspeed.Soifonecanscaledownalldimensionstoletussay onetenththeaveragelengthsofthecurrent-pathswillbereducedtoone tenth.Soveryroughlyspeakingscalingdownofalllineardimensionsinthe ratioofonetotenalsogivesavaluablebonus:thespeedofoperationis scaledup10times.Othertechniquesallowevenfurtherspeed increases.Thisincreaseofoperationisarealadvantage.There aresomeapplicationinwhichcomputerscouldbeusedwhichrequireveryfast responsetimes.Manyofthesearemilitaryofcourse;butmilitaryapplications alsohaveapplicationsinengineeringsoonerorlater.Forexampleautomatic blindlandingofaircraftrequirescontinuouscomputercalculationswhichresult incontroloftheaircraftflight.Themoreimmediatetheresponsesarethe morestablethatcontrolcanbe.Anotheradvantageisthatless powerisrequiredtorunthecomputer.Inspacevehiclesandsatellitesthisis animportantmatter;buteveninatrialapplicationweneednotwastepower. Sometimesacomputertakessomuchpowerthatcoolingsystemswhichrequire stillmorepowerhavetobeinstalledtokeepthecomputerfromgettingtoohot whichwouldincreasetheriskoffaultsdeveloping.Soacomputerwhichdoesnot needtobecooledsavespowerontwocounts.Anotheradvantage isreliability.Mini-computershavebeenmadepossiblebythedevelopmentof integratedcircuits.Insteadofsolderingbitsofwiretojoinseparate componentssuchasresistorsandcapacitorssometimesinthemostintricate networksdesignerscannowproducemanyconnectedcircuitsinoneunitwhich involvesnosolderingandthereforenoriskofbrokenjointsat all.WhichofthefollowingisNOToneoftheadvantagesofmini-computers
IntheUnitedStatestodaycoffeeisa morepopulardrink1teabutteaplayed2 interestingpartinthehistoryoftheUnitedStates.Beforetheywon their3fromBritainthecolonistswereforcedto 4taxesonmanygoodsimportedintoAmerica.Thetaxmoney was5tosupportcolonialgovernorsandofficialssentto thecoloniesbytheBritish.In1770theBritishPrimeMinisterhadrepealed mostofthetaxesbutKingGeorge6onretainingthetax 7tea.TheKingsawthetaxasa8 oftheBritishrighttotaxthecolonies.Americanmerchants9 smugglednine-tenthsofAmerica’steaintothecountryand 10payingthetaxes.11 thetaxsavingsthepriceoftearemainedexpensivedue.to 12shippingcosts.WhentheBritishParliament 13anewlawwhichwouldallowBritishcompaniestoimport teamore14thanAmericanshippingcompaniesthe 15werealarmedandthey16a protest.InBostoncitizensandmerchantswho17 disguisedasIndiansboardedaBritishshipand18＄15000 worthofteaintotheharbor.Thisprotest19Great BritainisknownastheBostonTeaParty.Itwasoneoftheearliestactsof 20againstBritishrule.
IntheUnitedStatestodaycoffeeisa morepopulardrink1teabutteaplayed2 interestingpartinthehistoryoftheUnitedStates.Beforetheywon their3fromBritainthecolonistswereforcedto 4taxesonmanygoodsimportedintoAmerica.Thetaxmoney was5tosupportcolonialgovernorsandofficialssentto thecoloniesbytheBritish.In1770theBritishPrimeMinisterhadrepealed mostofthetaxesbutKingGeorge6onretainingthetax 7tea.TheKingsawthetaxasa8 oftheBritishrighttotaxthecolonies.Americanmerchants9 smugglednine-tenthsofAmerica’steaintothecountryand 10payingthetaxes.11 thetaxsavingsthepriceoftearemainedexpensivedue.to 12shippingcosts.WhentheBritishParliament 13anewlawwhichwouldallowBritishcompaniestoimport teamore14thanAmericanshippingcompaniesthe 15werealarmedandthey16a protest.InBostoncitizensandmerchantswho17 disguisedasIndiansboardedaBritishshipand18＄15000 worthofteaintotheharbor.Thisprotest19Great BritainisknownastheBostonTeaParty.Itwasoneoftheearliestactsof 20againstBritishrule.
IntheUnitedStatestodaycoffeeisa morepopulardrink1teabutteaplayed2 interestingpartinthehistoryoftheUnitedStates.Beforetheywon their3fromBritainthecolonistswereforcedto 4taxesonmanygoodsimportedintoAmerica.Thetaxmoney was5tosupportcolonialgovernorsandofficialssentto thecoloniesbytheBritish.In1770theBritishPrimeMinisterhadrepealed mostofthetaxesbutKingGeorge6onretainingthetax 7tea.TheKingsawthetaxasa8 oftheBritishrighttotaxthecolonies.Americanmerchants9 smugglednine-tenthsofAmerica’steaintothecountryand 10payingthetaxes.11 thetaxsavingsthepriceoftearemainedexpensivedue.to 12shippingcosts.WhentheBritishParliament 13anewlawwhichwouldallowBritishcompaniestoimport teamore14thanAmericanshippingcompaniesthe 15werealarmedandthey16a protest.InBostoncitizensandmerchantswho17 disguisedasIndiansboardedaBritishshipand18＄15000 worthofteaintotheharbor.Thisprotest19Great BritainisknownastheBostonTeaParty.Itwasoneoftheearliestactsof 20againstBritishrule.
L-谷氨酸脱氢酶在哪些组织器官活性最强
Text4 TheWorldHealthOrganizationsaysas manyas10millionpersonsworldwidemayhavethevirus病毒thatcausesAIDS. Expertsbelieveabout350thousandpersonshavethedisease.Andonemillion moremaygetitinthenextfiveyears.IntheUnitedStatesabout50000 personshavediedwithAIDS.Thecountry’stopmedicalofficialsaysmorethan 90percentofallAmericanswhohadtheAIDSvirusfiveyearsagoare dead.ThereisnocureforAIDSandnovaccine疫苗medicineto preventit.HoweverresearchersknowmuchmoreaboutAIDSthantheydidjusta fewyearsago.WenowknowthatAIDSiscausedbyavirus.Thevirusinvades healthycellsincludingwhitebloodcellsthatarepartofourdefensesystem againstdisease.Ittakescontrolofthehealthycell’sgenetic遗传的materialand forcesthecelltomakeacopyofthevirus.Thecellthendies.Andtheviral particlesmoveontoinvadeandkillmorehealthycells.The AIDSvirusiscarriedinaperson’sbodyfluids.Theviruscanbepassed sexuallyorbysharinginstrumentsusedtotakeintravenous静脉内的drugs.It alsocanbepassedinbloodproductsorfromapregnantwomanwithAIDStoher developingbaby.ManystoriesaboutthespreadofAIDSare false.YoucannotgetAIDSbyworkingorattendingschoolwithsomeonewhohas thedisease.Youcannotgetitbytouchingdrinkingglassesorotherobjects usedbysuchpersons.ExpertssaynoonehasgottenAIDSbylivingwithcaring forortouchinganAIDSpatient.Thereareseveralwarningsigns ofanAIDSinfection.Theyincludealwaysfeelingtiredunexplainedweightloss anduncontrolledexpulsionofbodywastes大小便失禁.Otherwarningsarethe appearanceofwhiteareasonthemouthdarkredareasofskinthatdonot disappearandahigherthannormalbody temperature.______isNOTawarningsignofanAIDSinfection.
41__________.Intoday’sprosperoussocietiesthedistinction hasbecomeblurredbecausesomanywantshavebeenturnedintoneeds.Awriter forinstancecanworkwithpaperandpencils.Thesearelegitimateneedsfor thetask.Buttheworkcanbedonemorequicklyandefficientlywithaword processor.Thusacomputerissoonviewedasaneedratherthana want.42__________.Thetwomaincategoriesareconvenience goodsandshoppinggoods.Twolessertypesarespecialtygoodsandunsought goods.Itmustbeemphasizedthatallofthesetypesarebasedontheway shoppersthinkaboutproductsnotonthenatureoftheproductsthemselves. WhatisregardedasaconvenienceiteminFrancewineforexamplemaybea specialtygoodsintheUnitedStates.Peopledonotspenda greatdealoftimeshoppingforsuchconvenienceitemsasgroceriesnewspapers toothpasterazorbladesaspirinandcandy.Thebuyingofconveniencegoods maybedoneroutinelyassomefamiliesbuygroceriesonceaweek.Such regularlypurchaseditemsarecalledstaples.Sometimesconvenienceproductsare boughtonimpulse:someonehasasuddendesireforanicecreamsundaeonahot day.43__________.Shoppinggoodsareitemsforwhich customerssearch.Theycomparepricesqualityandstylesandmayvisita numberofstoresbeforemakingadecision.44__________. Shoppinggoodsfallintotwoclasses:thosethatareperceivedas basicallythesameandthosethatareregardedasdifferent.Itemsthatare lookeduponasbasicallythesameincludesuchthingsashomeappliances televisionsetsandautomobiles.Havingdecidedonthemodeldesiredthe customerisprimarilyinterestedingettingtheitematthemostfavorable price.Itemsregardedasinherentlydifferentincludeclothingfurnitureand dishes.Qualitystyleandfashionwilleithertakeprecedenceoverpriceor theywillnotmatteratall.Specialtygoodshave characteristicsthatimpelcustomerstomakespecialeffortstofindthem.Price maybenoconsiderationatall.Specialtygoodscanincludealmostanykindof product.Normallyspecialtygoodshaveabrandnameorotherdistinguishing characteristics.Unsoughtgoodsareitemsaconsumerdoesnot necessarilywantorneedormaynotevenknowabout.Promotionoradvertising bringssuchgoodstotheconsumer’sattention.45__________.[A]Inthe fieldofmarketingconsumergoodsareclassedaccordingtothewayinwhich theyarepurchased.[B]Ortheymaybepurchasedasemergencyitems.[C] Whatitreallydoesisgiveunprecedentedinsightintotheconsumermind.Andit willactuallyresultinhigherproductsales.[D]Theproductcouldbe somethingnewonthemarketastheSonyWalkmanoncewasoritmaybeafairly standardservicesuchaslifeinsuranceforwhichmostpeoplewillusuallynot bothershopping.[E]Buyinganautomobileisoftendonethisway.[F]The traditionaldistinctionbetweenproductsthatsatisfyneedsandthosethat satisfywantsisnolongeradequatetodescribeclassesofproducts.[G] Theseproprietaryannualsurveysaddressshoppingfrequencystorepreference shopperprofilespurchasepatternsanddriversofshoppingbehavior.
左心功能不全肺循环淤血的主要临床表现下列正确的是
风湿病常有
Text1 Morethanahundredyearsagobefore theCivilWaracrewofcowboysstoodoutsidealargehorsecorralWiththem wastheirbossBradfordGrimesacattlemanwhoownedalargeSouthTexasranch neartheGulfofMexico.JustthenMrs.Grimesthecattleman’s wifecametotheranchhousedoorandcriedoutBradford!Bradford!Those Blacksareworthathousanddollarsapiece.Onemightgetkilled.Thecowboys laughedbuttheyknewshewastellingthetruth.FortheywereallBlack slaves.BradfordGrimeswastheirowner.MostofthefirstBlack cowboyswereslavesbroughtbytheirmastersfromtheoldSouth.Onthe plantationsintheSouththeslavescutcotton.OntheranchesinTexasthey hadtolearnanewtrade—breakinghorsesandhandlinglong-horns.Somewere taughtbyMexicanvaquerossomebyIndianawhoknewthewaysofhorsesand cattle.Grimeswasonlyoneofhundredsofslaveowningranchers whorancattleinTexas.Theranchershadbroughttheirfamiliesandslavesfrom MississippiGeorgiaandothersouthernstates.Theycameonhorsebackon footandinwagons.SomerancherssettledneartheMexican borderbuttheretheyfoundthatitwastooeasyfortheirslavestoescape. EvenslavesasfarnorthasAustinthecapitalofTexascametothinkof Mexicoasthepromisedland.Asearlyas1845theyearthatTexasbecamea stateaTexasnewspaperreportedtheescapeoftwenty-fiveBlacks.Theywere mountedonsomeofthebesthorsesthatcouldbefoundthestorysaidand severalofthemwerewellarmed.ThousandsofotherBlackslavesescapedinthe sameway.All-Blackcattlecrewswerecommonthroughoutcentral andeasternTexas.TherewereevenafewfreeBlackswhoownedranchesbefore theCivilWar.AaronAshworthwasoneofthemandheowned2500cattleaswell assomeslavesofhisown.HeemployedaWhiteschoolmastertotutorhis children.Blackcowboyshelpedtotameandsettleawild country.WhydoyouthinktheauthortalksaboutslavesbeforetheCivilWarandnotafter
Text4 TheWorldHealthOrganizationsaysas manyas10millionpersonsworldwidemayhavethevirus病毒thatcausesAIDS. Expertsbelieveabout350thousandpersonshavethedisease.Andonemillion moremaygetitinthenextfiveyears.IntheUnitedStatesabout50000 personshavediedwithAIDS.Thecountry’stopmedicalofficialsaysmorethan 90percentofallAmericanswhohadtheAIDSvirusfiveyearsagoare dead.ThereisnocureforAIDSandnovaccine疫苗medicineto preventit.HoweverresearchersknowmuchmoreaboutAIDSthantheydidjusta fewyearsago.WenowknowthatAIDSiscausedbyavirus.Thevirusinvades healthycellsincludingwhitebloodcellsthatarepartofourdefensesystem againstdisease.Ittakescontrolofthehealthycell’sgenetic遗传的materialand forcesthecelltomakeacopyofthevirus.Thecellthendies.Andtheviral particlesmoveontoinvadeandkillmorehealthycells.The AIDSvirusiscarriedinaperson’sbodyfluids.Theviruscanbepassed sexuallyorbysharinginstrumentsusedtotakeintravenous静脉内的drugs.It alsocanbepassedinbloodproductsorfromapregnantwomanwithAIDStoher developingbaby.ManystoriesaboutthespreadofAIDSare false.YoucannotgetAIDSbyworkingorattendingschoolwithsomeonewhohas thedisease.Youcannotgetitbytouchingdrinkingglassesorotherobjects usedbysuchpersons.ExpertssaynoonehasgottenAIDSbylivingwithcaring forortouchinganAIDSpatient.Thereareseveralwarningsigns ofanAIDSinfection.Theyincludealwaysfeelingtiredunexplainedweightloss anduncontrolledexpulsionofbodywastes大小便失禁.Otherwarningsarethe appearanceofwhiteareasonthemouthdarkredareasofskinthatdonot disappearandahigherthannormalbody temperature.Thefifthparagraphismainlyabout______.
符合慢性粒细胞白血病急粒变的有
Text1 Morethanahundredyearsagobefore theCivilWaracrewofcowboysstoodoutsidealargehorsecorralWiththem wastheirbossBradfordGrimesacattlemanwhoownedalargeSouthTexasranch neartheGulfofMexico.JustthenMrs.Grimesthecattleman’s wifecametotheranchhousedoorandcriedoutBradford!Bradford!Those Blacksareworthathousanddollarsapiece.Onemightgetkilled.Thecowboys laughedbuttheyknewshewastellingthetruth.FortheywereallBlack slaves.BradfordGrimeswastheirowner.MostofthefirstBlack cowboyswereslavesbroughtbytheirmastersfromtheoldSouth.Onthe plantationsintheSouththeslavescutcotton.OntheranchesinTexasthey hadtolearnanewtrade—breakinghorsesandhandlinglong-horns.Somewere taughtbyMexicanvaquerossomebyIndianawhoknewthewaysofhorsesand cattle.Grimeswasonlyoneofhundredsofslaveowningranchers whorancattleinTexas.Theranchershadbroughttheirfamiliesandslavesfrom MississippiGeorgiaandothersouthernstates.Theycameonhorsebackon footandinwagons.SomerancherssettledneartheMexican borderbuttheretheyfoundthatitwastooeasyfortheirslavestoescape. EvenslavesasfarnorthasAustinthecapitalofTexascametothinkof Mexicoasthepromisedland.Asearlyas1845theyearthatTexasbecamea stateaTexasnewspaperreportedtheescapeoftwenty-fiveBlacks.Theywere mountedonsomeofthebesthorsesthatcouldbefoundthestorysaidand severalofthemwerewellarmed.ThousandsofotherBlackslavesescapedinthe sameway.All-Blackcattlecrewswerecommonthroughoutcentral andeasternTexas.TherewereevenafewfreeBlackswhoownedranchesbefore theCivilWar.AaronAshworthwasoneofthemandheowned2500cattleaswell assomeslavesofhisown.HeemployedaWhiteschoolmastertotutorhis children.Blackcowboyshelpedtotameandsettleawild country.HowdidtheBlackslavesontheranchesinTexasdifferfromthoseontheplantationsintheoldSouth
Text2 Thereareseveraladvantagesinmaking computersassmallasonecan.Sometimesweightisparticularlyimportant.A modernaircraftforexamplecarriesquitealoadofelectronicapparatus.If itispossibletomakeanyofthesesmallerandthereforelightertheaircraft cancarryabiggerpay-load.Thiskindofconsiderationappliestospace satellitesandtoallkindsofcomputersthathavetobecarried about.Butweightisnottheonlyfactor.Thesmallerthe computerthefasteritcanwork.Thesignalsgotoandfroataveryhighbut almostconstantspeed.Soifonecanscaledownalldimensionstoletussay onetenththeaveragelengthsofthecurrent-pathswillbereducedtoone tenth.Soveryroughlyspeakingscalingdownofalllineardimensionsinthe ratioofonetotenalsogivesavaluablebonus:thespeedofoperationis scaledup10times.Othertechniquesallowevenfurtherspeed increases.Thisincreaseofoperationisarealadvantage.There aresomeapplicationinwhichcomputerscouldbeusedwhichrequireveryfast responsetimes.Manyofthesearemilitaryofcourse;butmilitaryapplications alsohaveapplicationsinengineeringsoonerorlater.Forexampleautomatic blindlandingofaircraftrequirescontinuouscomputercalculationswhichresult incontroloftheaircraftflight.Themoreimmediatetheresponsesarethe morestablethatcontrolcanbe.Anotheradvantageisthatless powerisrequiredtorunthecomputer.Inspacevehiclesandsatellitesthisis animportantmatter;buteveninatrialapplicationweneednotwastepower. Sometimesacomputertakessomuchpowerthatcoolingsystemswhichrequire stillmorepowerhavetobeinstalledtokeepthecomputerfromgettingtoohot whichwouldincreasetheriskoffaultsdeveloping.Soacomputerwhichdoesnot needtobecooledsavespowerontwocounts.Anotheradvantage isreliability.Mini-computershavebeenmadepossiblebythedevelopmentof integratedcircuits.Insteadofsolderingbitsofwiretojoinseparate componentssuchasresistorsandcapacitorssometimesinthemostintricate networksdesignerscannowproducemanyconnectedcircuitsinoneunitwhich involvesnosolderingandthereforenoriskofbrokenjointsat all.Ifalllineardimensionsofacomputerisscaleddowntoonetenth______.
Ⅱ型超敏反应的病理特点有
G-蛋白的效应器有
IntheUnitedStatestodaycoffeeisa morepopulardrink1teabutteaplayed2 interestingpartinthehistoryoftheUnitedStates.Beforetheywon their3fromBritainthecolonistswereforcedto 4taxesonmanygoodsimportedintoAmerica.Thetaxmoney was5tosupportcolonialgovernorsandofficialssentto thecoloniesbytheBritish.In1770theBritishPrimeMinisterhadrepealed mostofthetaxesbutKingGeorge6onretainingthetax 7tea.TheKingsawthetaxasa8 oftheBritishrighttotaxthecolonies.Americanmerchants9 smugglednine-tenthsofAmerica’steaintothecountryand 10payingthetaxes.11 thetaxsavingsthepriceoftearemainedexpensivedue.to 12shippingcosts.WhentheBritishParliament 13anewlawwhichwouldallowBritishcompaniestoimport teamore14thanAmericanshippingcompaniesthe 15werealarmedandthey16a protest.InBostoncitizensandmerchantswho17 disguisedasIndiansboardedaBritishshipand18＄15000 worthofteaintotheharbor.Thisprotest19Great BritainisknownastheBostonTeaParty.Itwasoneoftheearliestactsof 20againstBritishrule.
对发热腹痛血性腹水的病人应考虑
IntheUnitedStatestodaycoffeeisa morepopulardrink1teabutteaplayed2 interestingpartinthehistoryoftheUnitedStates.Beforetheywon their3fromBritainthecolonistswereforcedto 4taxesonmanygoodsimportedintoAmerica.Thetaxmoney was5tosupportcolonialgovernorsandofficialssentto thecoloniesbytheBritish.In1770theBritishPrimeMinisterhadrepealed mostofthetaxesbutKingGeorge6onretainingthetax 7tea.TheKingsawthetaxasa8 oftheBritishrighttotaxthecolonies.Americanmerchants9 smugglednine-tenthsofAmerica’steaintothecountryand 10payingthetaxes.11 thetaxsavingsthepriceoftearemainedexpensivedue.to 12shippingcosts.WhentheBritishParliament 13anewlawwhichwouldallowBritishcompaniestoimport teamore14thanAmericanshippingcompaniesthe 15werealarmedandthey16a protest.InBostoncitizensandmerchantswho17 disguisedasIndiansboardedaBritishshipand18＄15000 worthofteaintotheharbor.Thisprotest19Great BritainisknownastheBostonTeaParty.Itwasoneoftheearliestactsof 20againstBritishrule.
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