在组距分组汇中，一个组的最小值称为下限，最大值称为上限。上限值和下限值的平均数称为（）。

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组距分组时下列说法正确的是

一个组距的最小值称为上限，最大值称为下限一个组的最小值称为下限，最大值称为上限上限与下限的差值称为组距上限与下限值的平均数称为组中值一个组距的最小值称为下限，最大值称为上限

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Hangzhouisfamousasitsbeautifulscenery.
C Withonlyabout1000pandasleftintheworldChinaisdesperatelytryingtoclonetheanimalandsavetheendangeredspecies.That’samovesimilartowhataTexasA&MUniversityresearcherhasbeenundertakingforthepastfiveyearsinaprojectcalled"Noah’sArk". Dr.DuaneKraemeraprofessorinTexasA&M’sCollegeofVeterinaryMedicineandapioneerinembryo胚胎transferworkandrelatedproceduressayshesalutestheChineseeffortand"Iwishthemallthebestsuccesspossible.It’saworthwhileprojectcertainlynotaneasyoneandit’sverymuchlikewhatwe’reattemptinghereatTexasA&M--tosaveanimalsfromextinction." Noah’sArkisaimedatcollectingeggsembryossemen精子andDNAofendangeredanimalsandstoringtheminliquidnitrogen.IfcertainspeciesshouldbecomeextinctKraemersaystherewouldbeenoughofthebasicbuildingblockstoreintroducethespeciesinthefuture. Itisestimatedthatasmanyas2000speciesofmammalsbirdsandreptileswillbecomeextinctoverthenext100years.ThepandanativeonlytoChinaisindangerofbecomingextinctinthenext25years. ThisweekChinesescientistssaidtheygrewanembryobyintroducingcellsfromadeadfemalepandaintotheeggcellsofaJapanesewhiterabbit.Theyarenowtryingtoimplanttheembryointoahostanimal. Theentireprocedurecouldtakefromthreetofiveyearstocomplete. "Thenucleartransferofonespeciestoanotherisnoteasyandthelackofavailablepandaeggscouldbeamajorproblem"Kraemerbelieves."Theywillprobablyhavetodoseveralhundredtransferstoresultinonepregnancy.Ittakesalongtimeandit’sdifficultbutthiscouldbegroundbreakingscienceifitworks.Theyarecertainlynotputtinganylivepandasatrisksoitisworththeeffort"addsKraemerwhoisoneoftheleadersoftheMissyplicityProjectatTexasA&Mthefirsteverattemptatcloningadog. "Theyaretryingtodosomethingthat’sneverbeendoneandthisisverysimilartoourworkinNoah’sArk.We’rebothtryingtosaveanimalsthatfaceextinction.Icertainlyapplaudtheireffortandthere’salotwecanlearnfromwhattheyareattemptingtodo.It’saresearchthatisverymuchneeded./ ThewordgroundbreakingParagraph7canbeinterpretedas.
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D Advertiserstendtothinkbigandperhapsthisiswhythey’realwayscominginforcriticism.Their!criticsseemtoresentthembecausetheyhaveaflairforself-promotionandbecausetheyhavesomuchmoneytothrowaround."It’siniquitous"theysay"thatthisentirelyunproductiveindustryifwecancallitthatshouldabsorbmillionsofpoundseachyear.Itonlygoestoshowhowmuchprofitthebigcompaniesaremaking.Whydon’ttheystopadvertisingandreducethepriceoftheirgoodsAfterallit’stheconsumerwhopays...". Thepooroldconsumer!He’dhavetopayagreatdealmoreifadvertisingdidn’tcreatemassmarketsforproducts.Itispreciselybecauseoftheheavyadvertisingthatconsumergoodsaresocheap.Butwegetthewrongideaifwethinktheonlypurposeofadvertisingistosellgoods.Anotherequallyimportantfunctionistoinform.Agreatdealoftheknowledgewehaveabouthouseholdgoodsderiveslargelyfromtheadvertisementsweread.Advertisementsintroduceustonewproductsorremindusoftheexistenceoftheoneswealreadyknowabout.Supposingyouwantedtobuyawashingmachineitismorethanlikelyyouwouldobtaindetailsregardingperformancepriceetcfromanadvertisement. Lotsofpeoplepretendthattheyneverreadadvertisementsbutthisclaimmaybeseriouslydoubted.Itishardlypossiblenottoreadadvertisementsthesedays.Andwhatfuntheyoftenaretoo!Justthinkwhatarailwaystationoranewspaperwouldbelikewithoutadvertisements.WouldyouenjoygazingatablankwallorreadingrailwaybylawswhilewaitingforatrainWouldyouliketoreadonlycloselyprintedcolumnsofnewsinyourdailypaperAcheerfulwittyadvertisementmakessuchadifferencetoadrabwalloranewspaperfullofthedailyrationofcalamities. Wemustnotforgeteitherthatadvertisingmakesapositivecontributiontoourpockets.Newspaperscommercialradioandtelevisioncompaniescouldnotsubsistwithoutthissourceofrevenue.Thefactthatwepaysolittleforourdailypaperorcanenjoysomanybroadcastprogramsisdueentirelytothemoneyspentbyadvertisers.Justthinkwhatanewspaperwouldcostifwehadtopayitsfullprice! Anotherthingwemustn’tforgetisthe"smallads."whichareinvirtuallyeverynewspaperandmagazine.Whatatremendouslyusefulservicetheyperformforthecommunity!Justaboutanythingcanbeaccomplishedthroughthesecolumns.Forinstanceyoucanfindajobbuyorsellahouseannounceabirthmarriageordeathinwhatusedtobecalledthe"hatchmatchanddispatch"columnbutbyfarthemostfascinatingsectionisthepersonalor"agony"column.Nootheriteminanewspaperprovidessuchentertainingreadingorofferssuchadeepinsightintohumannature.It’sthebestadvertisementforadvertisingthereis! WhichofthefollowingisNotTrue
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B Ranch.ItwasnearLosAngelesinCalifornia.AfewyearslaterHollywoodwasoneofthefamousplacesintheworld.Atthebeginningofthe20thcenturytherewasabigfarmcalledHollywood.Fromthe1910’stothe1950’sHollywoodwasthefilmcenteroftheworld. Everyfamilyknewthenamesofitsfilmstars——CharlieChaplinGretaGarboBergmanandhundredsmore. ThereasonwhypeoplewenttoHollywoodtomakefilmswasthesun.AtfirstpeoplemadefilmsinNewYorkontheeastcoastoftheUnitedStates. ButthentheyheardaboutLosAngeleswherethereare350daysofthesuneveryyear.Astheymadeallthefilmsbysunlightthewestcoastwasamuchbetterplacetowork.AlsonearHollywoodyoucanfindmountainsandseaanddesert.Theydidnothavetotravelfartomakeanykindoffilm. WhenTVbecamepopularHollywoodstartedmakingfilmsfortelevision.Theninthe1970’stheydiscoveredpeoplestillwenttothecinematoseebigexpensivefilms.NowadaystheyarestillmakingfilmsinHollywoodandpeopleseethemallovertheworld. PeoplewenttoHollywoodtomakefilmsbecause.
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E Atacertaintimeinourlivesweconsidereveryplaceasthepossiblesite地点forahouse.IhavethussearchedthecountrywithinadozenmilesofwhereIlive.InimaginationIhaveboughtallthefarmsoneafteranotherandIknewtheirprices. ThenearestthingthatIcametoactualownershipwaswhenIboughttheHollowellplace.Butbeforetheownercompletedthesalewithmehiswifechangedhermindandwishedtokeepitandheofferedmeadditionaldollarstoreturnthefarmtohim.HoweverIlethimkeeptheadditionaldollarsandsoldhimthefarmforjustwhatIhadgivenforit. TherealattractionsoftheHollowellfarmtomewereitspositionbeingabouttwomilesfromthevillagehalfamilefromthenearestneighborbounded相邻ononesidebytheriverandseparatedfromthehighwaybyawidefield.Thepoorconditionofthehouseandfencesshowedthatithadn’tbeenusedforsometime.IrememberedfrommyearliesttripuptheriverthatthehouseusedtobehiddenbehindaforestareaandIwasinahurrytobuyitbeforetheownerfinishedgettingoutsomerockscuttingdowntheappletreesandclearingawaysomeyoungtreeswhichhadgrownupinthefields.Iwantedtobuyitbeforehemadeanymoreofhisimprovements.ButitturnedoutasIhavesaid. Iwasnotreallytroubledbytheloss.IhadalwayshadagardenbutIdon’tthinkIwasreadyforalargefarm.Ibelievethataslongaspossibleitisbettertolivefreeanduncommitted不受约束的.Itmakesbutlittledifferencewhetheryouownafarmornot. Whydidtheauthorwanttobuythefarminahurry
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D Advertiserstendtothinkbigandperhapsthisiswhythey’realwayscominginforcriticism.Their!criticsseemtoresentthembecausetheyhaveaflairforself-promotionandbecausetheyhavesomuchmoneytothrowaround."It’siniquitous"theysay"thatthisentirelyunproductiveindustryifwecancallitthatshouldabsorbmillionsofpoundseachyear.Itonlygoestoshowhowmuchprofitthebigcompaniesaremaking.Whydon’ttheystopadvertisingandreducethepriceoftheirgoodsAfterallit’stheconsumerwhopays...". Thepooroldconsumer!He’dhavetopayagreatdealmoreifadvertisingdidn’tcreatemassmarketsforproducts.Itispreciselybecauseoftheheavyadvertisingthatconsumergoodsaresocheap.Butwegetthewrongideaifwethinktheonlypurposeofadvertisingistosellgoods.Anotherequallyimportantfunctionistoinform.Agreatdealoftheknowledgewehaveabouthouseholdgoodsderiveslargelyfromtheadvertisementsweread.Advertisementsintroduceustonewproductsorremindusoftheexistenceoftheoneswealreadyknowabout.Supposingyouwantedtobuyawashingmachineitismorethanlikelyyouwouldobtaindetailsregardingperformancepriceetcfromanadvertisement. Lotsofpeoplepretendthattheyneverreadadvertisementsbutthisclaimmaybeseriouslydoubted.Itishardlypossiblenottoreadadvertisementsthesedays.Andwhatfuntheyoftenaretoo!Justthinkwhatarailwaystationoranewspaperwouldbelikewithoutadvertisements.WouldyouenjoygazingatablankwallorreadingrailwaybylawswhilewaitingforatrainWouldyouliketoreadonlycloselyprintedcolumnsofnewsinyourdailypaperAcheerfulwittyadvertisementmakessuchadifferencetoadrabwalloranewspaperfullofthedailyrationofcalamities. Wemustnotforgeteitherthatadvertisingmakesapositivecontributiontoourpockets.Newspaperscommercialradioandtelevisioncompaniescouldnotsubsistwithoutthissourceofrevenue.Thefactthatwepaysolittleforourdailypaperorcanenjoysomanybroadcastprogramsisdueentirelytothemoneyspentbyadvertisers.Justthinkwhatanewspaperwouldcostifwehadtopayitsfullprice! Anotherthingwemustn’tforgetisthe"smallads."whichareinvirtuallyeverynewspaperandmagazine.Whatatremendouslyusefulservicetheyperformforthecommunity!Justaboutanythingcanbeaccomplishedthroughthesecolumns.Forinstanceyoucanfindajobbuyorsellahouseannounceabirthmarriageordeathinwhatusedtobecalledthe"hatchmatchanddispatch"columnbutbyfarthemostfascinatingsectionisthepersonalor"agony"column.Nootheriteminanewspaperprovidessuchentertainingreadingorofferssuchadeepinsightintohumannature.It’sthebestadvertisementforadvertisingthereis! Theattitudeoftheauthortowardadvertisersis.
A HowshouldoneinvestasumofmoneyinthesedaysofinflationLeftinabankitwillhardlykeepitsvaluehoweverhightheinterestrateis.OnlyabravemanoraveryrichonedarestobuyandsellontheStockMarket.Todayitseemsthatoneofthebestwaystoprotectyoursavingsandevenincreaseyourwealthistobuybeautifulobjectsfromthepast.HereIamgoingtooffersomeadviceoncollectingantiqueclockswhichIpersonallyconsiderareamongthemostinterestingofantiques. Isometimeswonderwhatabeingfromanotherplanetmightreportbackaboutourwayoflife."TheplanetEarthisruledbyamysteriouscreaturethatsitsorstandsinaroomandmakesastrangetickingsound.Ithasafacewithtwelveblackmarksandtwohands.Mencandonothingwithoutitspermissionanditfastensitsyoungroundpeople’swristssothateverywheremengotheyarestillunderitscontrol.ThiscreatureistherealmasterofEarthandmenareitsslaves." Whetherornotweareslavesoftimetodaydependsonourcultureandpersonalitybutitisbelievedthatmanyyearsagokingskeptspecialslavestotellthetime.Certainmenwereverycleveratmeasuringthetimeofdayaccordingtothebeatingoftheirownhearts.Theyweremadetostandinafixedplaceandeveryhourorsowouldshoutthetime.Soitseemsthatthefirstclockswerehumanbeings. Howevermenquicklyfoundmoreconvenientandreliablewaysoftellingthetime.Theylearnedtousetheshadowscastbythesun.Theymarkedthehoursoncandlesusedsandinhour-glassesandinventedwater-clocks.Indeedanyseriousstudentofantiquesshouldspendasmuchtimeaspossiblevisitingpalacesstatelyhomesandmuseumstoseesomeofthefinestexamplesofclocksfromthepast. Antiqueclockscouldbeveryexpensivebutoneofthejoysofcollectingclocksisthatitisstillpossibletofindquitecheaponesforyourownhome.Afterallifyouaregoingtoberuledbythetimewhynotinvestinairantiqueclockandperhapsmakeafutureprofit Thepurposeofthepassageis.
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B Ranch.ItwasnearLosAngelesinCalifornia.AfewyearslaterHollywoodwasoneofthefamousplacesintheworld.Atthebeginningofthe20thcenturytherewasabigfarmcalledHollywood.Fromthe1910’stothe1950’sHollywoodwasthefilmcenteroftheworld. Everyfamilyknewthenamesofitsfilmstars——CharlieChaplinGretaGarboBergmanandhundredsmore. ThereasonwhypeoplewenttoHollywoodtomakefilmswasthesun.AtfirstpeoplemadefilmsinNewYorkontheeastcoastoftheUnitedStates. ButthentheyheardaboutLosAngeleswherethereare350daysofthesuneveryyear.Astheymadeallthefilmsbysunlightthewestcoastwasamuchbetterplacetowork.AlsonearHollywoodyoucanfindmountainsandseaanddesert.Theydidnothavetotravelfartomakeanykindoffilm. WhenTVbecamepopularHollywoodstartedmakingfilmsfortelevision.Theninthe1970’stheydiscoveredpeoplestillwenttothecinematoseebigexpensivefilms.NowadaystheyarestillmakingfilmsinHollywoodandpeopleseethemallovertheworld. Inthe1910’sHollywoodbecamea.
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F WhenIopenedthefirst"BodyShop"in1976whatIwantedtodowastoearn挣enoughmoneytofeedmychildren.Todaythe"BodyShop"isagreatcompanygrowingfastallaroundtheworld.IntheyearssincewebeganIhavelearnedalot.MuchofwhatIhavelearnedwillbefoundinthisbookbecauseIbelievethatweasacompanyhavesomethingworthsayingabouthowtorunasuccessfulbusinesswithoutgivingupwhatyoureallybelievein. It’snotanordinarybusinessbook.Itisnotjustaboutmylifeeither.Themessageisthattosucceedinbusinessyouhavetobedifferent.Businesscanbefunandcanberunwithloveanddogood.InbusinessasinlifeIneedtoenjoymyselftohaveafeelingofmyfamilyandtofeelexcitedbysomethingunusual.Ihavealwayswantedthepeoplewhoworkforthe"BodyShop"tofeelthesameway. Nowthisbooksendstheseideasoutintotheworldandmakesthempublic.I’dliketothinktherearenolimits界限toour"family"andnolimitstowhatcanbedone.Ifindthatanexcitingthought.Ihopeyoudotoo. Whatwouldsomeonelearnfromthistext
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E Atacertaintimeinourlivesweconsidereveryplaceasthepossiblesite地点forahouse.IhavethussearchedthecountrywithinadozenmilesofwhereIlive.InimaginationIhaveboughtallthefarmsoneafteranotherandIknewtheirprices. ThenearestthingthatIcametoactualownershipwaswhenIboughttheHollowellplace.Butbeforetheownercompletedthesalewithmehiswifechangedhermindandwishedtokeepitandheofferedmeadditionaldollarstoreturnthefarmtohim.HoweverIlethimkeeptheadditionaldollarsandsoldhimthefarmforjustwhatIhadgivenforit. TherealattractionsoftheHollowellfarmtomewereitspositionbeingabouttwomilesfromthevillagehalfamilefromthenearestneighborbounded相邻ononesidebytheriverandseparatedfromthehighwaybyawidefield.Thepoorconditionofthehouseandfencesshowedthatithadn’tbeenusedforsometime.IrememberedfrommyearliesttripuptheriverthatthehouseusedtobehiddenbehindaforestareaandIwasinahurrytobuyitbeforetheownerfinishedgettingoutsomerockscuttingdowntheappletreesandclearingawaysomeyoungtreeswhichhadgrownupinthefields.Iwantedtobuyitbeforehemadeanymoreofhisimprovements.ButitturnedoutasIhavesaid. Iwasnotreallytroubledbytheloss.IhadalwayshadagardenbutIdon’tthinkIwasreadyforalargefarm.Ibelievethataslongaspossibleitisbettertolivefreeanduncommitted不受约束的.Itmakesbutlittledifferencewhetheryouownafarmornot. Whatdoestheauthorbelieveasimportantinlife
A HowshouldoneinvestasumofmoneyinthesedaysofinflationLeftinabankitwillhardlykeepitsvaluehoweverhightheinterestrateis.OnlyabravemanoraveryrichonedarestobuyandsellontheStockMarket.Todayitseemsthatoneofthebestwaystoprotectyoursavingsandevenincreaseyourwealthistobuybeautifulobjectsfromthepast.HereIamgoingtooffersomeadviceoncollectingantiqueclockswhichIpersonallyconsiderareamongthemostinterestingofantiques. Isometimeswonderwhatabeingfromanotherplanetmightreportbackaboutourwayoflife."TheplanetEarthisruledbyamysteriouscreaturethatsitsorstandsinaroomandmakesastrangetickingsound.Ithasafacewithtwelveblackmarksandtwohands.Mencandonothingwithoutitspermissionanditfastensitsyoungroundpeople’swristssothateverywheremengotheyarestillunderitscontrol.ThiscreatureistherealmasterofEarthandmenareitsslaves." Whetherornotweareslavesoftimetodaydependsonourcultureandpersonalitybutitisbelievedthatmanyyearsagokingskeptspecialslavestotellthetime.Certainmenwereverycleveratmeasuringthetimeofdayaccordingtothebeatingoftheirownhearts.Theyweremadetostandinafixedplaceandeveryhourorsowouldshoutthetime.Soitseemsthatthefirstclockswerehumanbeings. Howevermenquicklyfoundmoreconvenientandreliablewaysoftellingthetime.Theylearnedtousetheshadowscastbythesun.Theymarkedthehoursoncandlesusedsandinhour-glassesandinventedwater-clocks.Indeedanyseriousstudentofantiquesshouldspendasmuchtimeaspossiblevisitingpalacesstatelyhomesandmuseumstoseesomeofthefinestexamplesofclocksfromthepast. Antiqueclockscouldbeveryexpensivebutoneofthejoysofcollectingclocksisthatitisstillpossibletofindquitecheaponesforyourownhome.Afterallifyouaregoingtoberuledbythetimewhynotinvestinairantiqueclockandperhapsmakeafutureprofit WhichofthefollowingisNOTmentionedasawaytomeasurethetime
E Atacertaintimeinourlivesweconsidereveryplaceasthepossiblesite地点forahouse.IhavethussearchedthecountrywithinadozenmilesofwhereIlive.InimaginationIhaveboughtallthefarmsoneafteranotherandIknewtheirprices. ThenearestthingthatIcametoactualownershipwaswhenIboughttheHollowellplace.Butbeforetheownercompletedthesalewithmehiswifechangedhermindandwishedtokeepitandheofferedmeadditionaldollarstoreturnthefarmtohim.HoweverIlethimkeeptheadditionaldollarsandsoldhimthefarmforjustwhatIhadgivenforit. TherealattractionsoftheHollowellfarmtomewereitspositionbeingabouttwomilesfromthevillagehalfamilefromthenearestneighborbounded相邻ononesidebytheriverandseparatedfromthehighwaybyawidefield.Thepoorconditionofthehouseandfencesshowedthatithadn’tbeenusedforsometime.IrememberedfrommyearliesttripuptheriverthatthehouseusedtobehiddenbehindaforestareaandIwasinahurrytobuyitbeforetheownerfinishedgettingoutsomerockscuttingdowntheappletreesandclearingawaysomeyoungtreeswhichhadgrownupinthefields.Iwantedtobuyitbeforehemadeanymoreofhisimprovements.ButitturnedoutasIhavesaid. Iwasnotreallytroubledbytheloss.IhadalwayshadagardenbutIdon’tthinkIwasreadyforalargefarm.Ibelievethataslongaspossibleitisbettertolivefreeanduncommitted不受约束的.Itmakesbutlittledifferencewhetheryouownafarmornot. Whatdoweknowabouttheauthor
C Withonlyabout1000pandasleftintheworldChinaisdesperatelytryingtoclonetheanimalandsavetheendangeredspecies.That’samovesimilartowhataTexasA&MUniversityresearcherhasbeenundertakingforthepastfiveyearsinaprojectcalled"Noah’sArk". Dr.DuaneKraemeraprofessorinTexasA&M’sCollegeofVeterinaryMedicineandapioneerinembryo胚胎transferworkandrelatedproceduressayshesalutestheChineseeffortand"Iwishthemallthebestsuccesspossible.It’saworthwhileprojectcertainlynotaneasyoneandit’sverymuchlikewhatwe’reattemptinghereatTexasA&M--tosaveanimalsfromextinction." Noah’sArkisaimedatcollectingeggsembryossemen精子andDNAofendangeredanimalsandstoringtheminliquidnitrogen.IfcertainspeciesshouldbecomeextinctKraemersaystherewouldbeenoughofthebasicbuildingblockstoreintroducethespeciesinthefuture. Itisestimatedthatasmanyas2000speciesofmammalsbirdsandreptileswillbecomeextinctoverthenext100years.ThepandanativeonlytoChinaisindangerofbecomingextinctinthenext25years. ThisweekChinesescientistssaidtheygrewanembryobyintroducingcellsfromadeadfemalepandaintotheeggcellsofaJapanesewhiterabbit.Theyarenowtryingtoimplanttheembryointoahostanimal. Theentireprocedurecouldtakefromthreetofiveyearstocomplete. "Thenucleartransferofonespeciestoanotherisnoteasyandthelackofavailablepandaeggscouldbeamajorproblem"Kraemerbelieves."Theywillprobablyhavetodoseveralhundredtransferstoresultinonepregnancy.Ittakesalongtimeandit’sdifficultbutthiscouldbegroundbreakingscienceifitworks.Theyarecertainlynotputtinganylivepandasatrisksoitisworththeeffort"addsKraemerwhoisoneoftheleadersoftheMissyplicityProjectatTexasA&Mthefirsteverattemptatcloningadog. "Theyaretryingtodosomethingthat’sneverbeendoneandthisisverysimilartoourworkinNoah’sArk.We’rebothtryingtosaveanimalsthatfaceextinction.Icertainlyapplaudtheireffortandthere’salotwecanlearnfromwhattheyareattemptingtodo.It’saresearchthatisverymuchneeded./ Thebesttitleforthepassagemaybe.
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在组距分组汇中，一个组的最小值称为下限，最大值称为上限。上限值和下限值的平均数称为（）。

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