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一般来说，动物细胞体外培养需要满足以下条件( ) ①无毒的环境 ②无菌的环境 ③合成培养基需加血浆 ④温度与动物体温相近 ⑤需要O2和CO2
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一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基中通常需加人血浆④适宜的
①②③④⑤
①②③④
①③④⑤
②③④
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血浆④温度与动物体温
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血浆④温度与动物体温
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说下列哪项不是动物细胞体外培养需要满足以下条件
无毒、无菌的环境
合成培养基需加血清、血浆
需要O
2
，不需要CO
2
适宜的温度和pH
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血浆④温度与动物体温
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血清血浆④温度与动物
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血浆④温度与动物体温
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血清④温度与动物体温
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血清或血浆④温度与动
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血浆④温度与动物体温
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌环境③合成培养基需加血浆④温度与动物体温相
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
原创一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血清血浆④温度与
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血浆④温度与动物体温
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①培养液中适宜的pH②无菌的环境③合成培养基需加血浆④温度与
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血浆④温度与动物体温
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血浆④温度与动物体温
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血清血浆④温度与动物
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血浆④温度与动物体温
①②③④⑤
①②③④
①④⑤
①②③④⑥
一般来说动物细胞体外培养需要满足以下条件①无毒的环境②无菌的环境③合成培养基需加血浆④温度与动物体温
①②③④⑤⑥
①②③④
①③④⑤⑥
①②③④⑥
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Writethearticle.Runforclasses.Haven’tfinishedthereadings.Housecleaning.Assignmentto16intwohours.Outofbreathtimeandstilllate.That’sbeenmeforthepastthreeweeks.Andthenyesterdayasmyfingers17hitthekeyboardI18tolookoutside.ThroughthehalfopenblindsofmykitchenwindowIcaughtthebrightglow光线ofsunshine19throughthefreshlycleanedairandshining20theyellow-greenleavesofatree.Itcouldhavebeenthefourdaysofcontinualrainandgraygloomyskiesormyownself21endlessactivity.Idon’tknowwhatitwas22Ijustsattherelookingatthedancingsunrays.Nota23inmyhead.Nocrowdedfeelingsofapproachingworkorpeopleorevenfriends.Justwatching.Ifeltmybody24.Andafteralongtime...feltcalm.Thebreakpassed.Iwentbacktomy25.Butsomethingabouttherhythmoftheday26Itwasthedifferencebetweenrushingtocatchthebusandridingonyourownhorse.LaterthateveningI27howwe’dcometoinhabit居住aplacewhererestandmomentsofpeaceweremeanstobe28.Ifyouweren’ttiredoutoverworkedorwellnear29—youdidn’t30toenjoymomentsofpeace.31meofthepoemLeisurewrittenbyW.H.Daviesintheearly20thcentury.ItismoreMore32todaythaneverbefore.Notimetostandbeneaththeboughs树干Andstareaslongassheepandcows.NotimetoseethewoodswepassWheresquirrelshidetheirnutsingrass.Andthenwe’re33astowhyasacreaturewe’resoupset.Ifwecan’tbe34withourselveshowcanwehopetofindacommon35wecaninhabitwithothersⅡ．完形填空/Cloze
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Writethearticle.Runforclasses.Haven’tfinishedthereadings.Housecleaning.Assignmentto16intwohours.Outofbreathtimeandstilllate.That’sbeenmeforthepastthreeweeks.Andthenyesterdayasmyfingers17hitthekeyboardI18tolookoutside.ThroughthehalfopenblindsofmykitchenwindowIcaughtthebrightglow光线ofsunshine19throughthefreshlycleanedairandshining20theyellow-greenleavesofatree.Itcouldhavebeenthefourdaysofcontinualrainandgraygloomyskiesormyownself21endlessactivity.Idon’tknowwhatitwas22Ijustsattherelookingatthedancingsunrays.Nota23inmyhead.Nocrowdedfeelingsofapproachingworkorpeopleorevenfriends.Justwatching.Ifeltmybody24.Andafteralongtime...feltcalm.Thebreakpassed.Iwentbacktomy25.Butsomethingabouttherhythmoftheday26Itwasthedifferencebetweenrushingtocatchthebusandridingonyourownhorse.LaterthateveningI27howwe’dcometoinhabit居住aplacewhererestandmomentsofpeaceweremeanstobe28.Ifyouweren’ttiredoutoverworkedorwellnear29—youdidn’t30toenjoymomentsofpeace.31meofthepoemLeisurewrittenbyW.H.Daviesintheearly20thcentury.ItismoreMore32todaythaneverbefore.Notimetostandbeneaththeboughs树干Andstareaslongassheepandcows.NotimetoseethewoodswepassWheresquirrelshidetheirnutsingrass.Andthenwe’re33astowhyasacreaturewe’resoupset.Ifwecan’tbe34withourselveshowcanwehopetofindacommon35wecaninhabitwithothersⅡ．完形填空/Cloze
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Writethearticle.Runforclasses.Haven’tfinishedthereadings.Housecleaning.Assignmentto16intwohours.Outofbreathtimeandstilllate.That’sbeenmeforthepastthreeweeks.Andthenyesterdayasmyfingers17hitthekeyboardI18tolookoutside.ThroughthehalfopenblindsofmykitchenwindowIcaughtthebrightglow光线ofsunshine19throughthefreshlycleanedairandshining20theyellow-greenleavesofatree.Itcouldhavebeenthefourdaysofcontinualrainandgraygloomyskiesormyownself21endlessactivity.Idon’tknowwhatitwas22Ijustsattherelookingatthedancingsunrays.Nota23inmyhead.Nocrowdedfeelingsofapproachingworkorpeopleorevenfriends.Justwatching.Ifeltmybody24.Andafteralongtime...feltcalm.Thebreakpassed.Iwentbacktomy25.Butsomethingabouttherhythmoftheday26Itwasthedifferencebetweenrushingtocatchthebusandridingonyourownhorse.LaterthateveningI27howwe’dcometoinhabit居住aplacewhererestandmomentsofpeaceweremeanstobe28.Ifyouweren’ttiredoutoverworkedorwellnear29—youdidn’t30toenjoymomentsofpeace.31meofthepoemLeisurewrittenbyW.H.Daviesintheearly20thcentury.ItismoreMore32todaythaneverbefore.Notimetostandbeneaththeboughs树干Andstareaslongassheepandcows.NotimetoseethewoodswepassWheresquirrelshidetheirnutsingrass.Andthenwe’re33astowhyasacreaturewe’resoupset.Ifwecan’tbe34withourselveshowcanwehopetofindacommon35wecaninhabitwithothersⅡ．完形填空/Cloze
Writethearticle.Runforclasses.Haven’tfinishedthereadings.Housecleaning.Assignmentto16intwohours.Outofbreathtimeandstilllate.That’sbeenmeforthepastthreeweeks.Andthenyesterdayasmyfingers17hitthekeyboardI18tolookoutside.ThroughthehalfopenblindsofmykitchenwindowIcaughtthebrightglow光线ofsunshine19throughthefreshlycleanedairandshining20theyellow-greenleavesofatree.Itcouldhavebeenthefourdaysofcontinualrainandgraygloomyskiesormyownself21endlessactivity.Idon’tknowwhatitwas22Ijustsattherelookingatthedancingsunrays.Nota23inmyhead.Nocrowdedfeelingsofapproachingworkorpeopleorevenfriends.Justwatching.Ifeltmybody24.Andafteralongtime...feltcalm.Thebreakpassed.Iwentbacktomy25.Butsomethingabouttherhythmoftheday26Itwasthedifferencebetweenrushingtocatchthebusandridingonyourownhorse.LaterthateveningI27howwe’dcometoinhabit居住aplacewhererestandmomentsofpeaceweremeanstobe28.Ifyouweren’ttiredoutoverworkedorwellnear29—youdidn’t30toenjoymomentsofpeace.31meofthepoemLeisurewrittenbyW.H.Daviesintheearly20thcentury.ItismoreMore32todaythaneverbefore.Notimetostandbeneaththeboughs树干Andstareaslongassheepandcows.NotimetoseethewoodswepassWheresquirrelshidetheirnutsingrass.Andthenwe’re33astowhyasacreaturewe’resoupset.Ifwecan’tbe34withourselveshowcanwehopetofindacommon35wecaninhabitwithothersⅡ．完形填空/Cloze
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Writethearticle.Runforclasses.Haven’tfinishedthereadings.Housecleaning.Assignmentto16intwohours.Outofbreathtimeandstilllate.That’sbeenmeforthepastthreeweeks.Andthenyesterdayasmyfingers17hitthekeyboardI18tolookoutside.ThroughthehalfopenblindsofmykitchenwindowIcaughtthebrightglow光线ofsunshine19throughthefreshlycleanedairandshining20theyellow-greenleavesofatree.Itcouldhavebeenthefourdaysofcontinualrainandgraygloomyskiesormyownself21endlessactivity.Idon’tknowwhatitwas22Ijustsattherelookingatthedancingsunrays.Nota23inmyhead.Nocrowdedfeelingsofapproachingworkorpeopleorevenfriends.Justwatching.Ifeltmybody24.Andafteralongtime...feltcalm.Thebreakpassed.Iwentbacktomy25.Butsomethingabouttherhythmoftheday26Itwasthedifferencebetweenrushingtocatchthebusandridingonyourownhorse.LaterthateveningI27howwe’dcometoinhabit居住aplacewhererestandmomentsofpeaceweremeanstobe28.Ifyouweren’ttiredoutoverworkedorwellnear29—youdidn’t30toenjoymomentsofpeace.31meofthepoemLeisurewrittenbyW.H.Daviesintheearly20thcentury.ItismoreMore32todaythaneverbefore.Notimetostandbeneaththeboughs树干Andstareaslongassheepandcows.NotimetoseethewoodswepassWheresquirrelshidetheirnutsingrass.Andthenwe’re33astowhyasacreaturewe’resoupset.Ifwecan’tbe34withourselveshowcanwehopetofindacommon35wecaninhabitwithothersⅡ．完形填空/Cloze
Howmuchdidyou______fixingtheTV
______didwegoswimmingintheChangjiangRiver．
She______anovellastmonthbutIdon'tknowwhethershehasfinishedit.
Writethearticle.Runforclasses.Haven’tfinishedthereadings.Housecleaning.Assignmentto16intwohours.Outofbreathtimeandstilllate.That’sbeenmeforthepastthreeweeks.Andthenyesterdayasmyfingers17hitthekeyboardI18tolookoutside.ThroughthehalfopenblindsofmykitchenwindowIcaughtthebrightglow光线ofsunshine19throughthefreshlycleanedairandshining20theyellow-greenleavesofatree.Itcouldhavebeenthefourdaysofcontinualrainandgraygloomyskiesormyownself21endlessactivity.Idon’tknowwhatitwas22Ijustsattherelookingatthedancingsunrays.Nota23inmyhead.Nocrowdedfeelingsofapproachingworkorpeopleorevenfriends.Justwatching.Ifeltmybody24.Andafteralongtime...feltcalm.Thebreakpassed.Iwentbacktomy25.Butsomethingabouttherhythmoftheday26Itwasthedifferencebetweenrushingtocatchthebusandridingonyourownhorse.LaterthateveningI27howwe’dcometoinhabit居住aplacewhererestandmomentsofpeaceweremeanstobe28.Ifyouweren’ttiredoutoverworkedorwellnear29—youdidn’t30toenjoymomentsofpeace.31meofthepoemLeisurewrittenbyW.H.Daviesintheearly20thcentury.ItismoreMore32todaythaneverbefore.Notimetostandbeneaththeboughs树干Andstareaslongassheepandcows.NotimetoseethewoodswepassWheresquirrelshidetheirnutsingrass.Andthenwe’re33astowhyasacreaturewe’resoupset.Ifwecan’tbe34withourselveshowcanwehopetofindacommon35wecaninhabitwithothersⅡ．完形填空/Cloze
Thelawsaysthatwomenshouldhavethechanceofdoingthesamejobsasmenandearnthesameasthem.Therealityisverydifferent.Womenlosebecause25yearsaftertheEqualPayActmanyofthemstillgetpaidlessthanmen.Theylosebecausetheydolower-paidjobswhichmenjustwon’tconsider.Andtheylosebecausetheyaretheoneswhointerruptacareertohavechildren.AllthisisreportedinanindependentstudyorderedbytheGovernment’sWomen’sUnite.Thebiggestproblemisn’tequalpayinworkplacessuchasfactories.Itisasortofworkwomendo.Makealistofthelow-paidjobsthenconsiderwhodoesthem.Trynursessecretariescleanersclerksteachersinprimaryschoolsdinnerladiesandchildcarehelpers.NotalotofmenamongthatgrouparethereYetsomeofthosejobsarereallyimportant.Surelynoonewoulddenythataboutnursesandteachersforastart.SowhydowerewardthepeoplewhodothemsopoorlyTherecanbeonlyoneanswer—becausetheyarewomen.Thisisnotgoingtobeputrightovernight.ButtheGovernmentwhichemploysalotofthemandotherbosseshavetomakeastart.Itisdisgraceful可耻的thatwehavegoneintothe21stCenturybutstilltreatwomenassecond-classcitizens.WhenthewritersaysThisisnotgoingtobeputrightovernighthemeans______.
Sincethebeginningofhumanevolutionmenhavemigrated迁移acrosscontinentsinsearchoffoodsheltersafetyandcomfortableweather.Peoplestillmoveforthesereasonsbutnewreasonsforhumanmigrationarearisingsuchasjobrelocation重新安置andoverpopulation.Threemillionmigrantsaremovingfrompoorcountriestowealthieroneseachyearandincreasinglytheirdestinationisaneighboringcountryindevelopingpartsoftheworld.Peoplearemovingwithinthedevelopingworldforthesamereasonsastheymigratetowealthiernations.Peoplefrompoorcountriesaregoingtolesspoorcountriesfleeingwarsandconflicts.Theyarealsorespondingtopopulationpressuresbecausesomecountriesaredenselypopulatedandtheyoftenhavehighpopulationgrowth.Thosepeopleneedtogosomewhereelse.Therearethreemainreasonswhypeoplemove.ThebasiccategoriesandpercentagesareasfollowsaccordingtotheCurrentPopulationSurveysCPS:Family-relatedreasonsaccountfor26.3%includingchangesinmarital婚姻的statusestablishingahouseholdandotherfamilyreasons;work-relatedreasonsaccountfor16.2%includingjobtransferretirementandotherjob-relatedreasons;housing-relatedreasonsaccountfor51.6%includingnewandbetterhousesbetterneighborhoodcheaperhousingandotherhousingreasonstheremaining5.9%ofotherreasonsareattendingcollegethechangeofclimateandhealthreasons．Americanshavebeenmigratingsouthandwestfordecadesinsearchofbetterjobopportunitiesandwarmerclimates．Theyhavealsobeenmovingtoplacesalittlefarfromcitiesinsearchofbiggeryardsandhouseslowercrimeratesandbetterschools．In1950nearlyafifthofthepopulationlivedinthenation’s20largestcities．In2006itwasaboutoneinten．That’swhymanyAmericanpeoplesayBigCitiesShrinkasPeopleMoveSouthWest．BetweenMarch2005andMarch200773.4millionAmericansmoved．Fifty-sixpercentofthesemoveswerewithinthesamecountry．Twentypercentwerebetweencountiesbutinthesamestate．Nineteenpercentweremovestoadifferentstate．Somefamiliesevenwentabroad．TitlePeopleonthe56Lead-inThroughouthuman57peoplehavemigratedacrosscontinents.An58numberofpeoplefrompoorcountriesaremovingto59countriesespeciallyneighboringones.60forpeople’smigrationAccordingtotheCPSthe61ofpeoplemovetootherplacesforreasons62tohousing.Americanshavelongbeenmovingsouthandwestlooking63abetterjobchanceawarmer64andabiggeryardetc.ConclusionNoweveryyearmoreandmorepeoplemovetootherplacewhichseemstohavebecomeaglobal65.
Writethearticle.Runforclasses.Haven’tfinishedthereadings.Housecleaning.Assignmentto16intwohours.Outofbreathtimeandstilllate.That’sbeenmeforthepastthreeweeks.Andthenyesterdayasmyfingers17hitthekeyboardI18tolookoutside.ThroughthehalfopenblindsofmykitchenwindowIcaughtthebrightglow光线ofsunshine19throughthefreshlycleanedairandshining20theyellow-greenleavesofatree.Itcouldhavebeenthefourdaysofcontinualrainandgraygloomyskiesormyownself21endlessactivity.Idon’tknowwhatitwas22Ijustsattherelookingatthedancingsunrays.Nota23inmyhead.Nocrowdedfeelingsofapproachingworkorpeopleorevenfriends.Justwatching.Ifeltmybody24.Andafteralongtime...feltcalm.Thebreakpassed.Iwentbacktomy25.Butsomethingabouttherhythmoftheday26Itwasthedifferencebetweenrushingtocatchthebusandridingonyourownhorse.LaterthateveningI27howwe’dcometoinhabit居住aplacewhererestandmomentsofpeaceweremeanstobe28.Ifyouweren’ttiredoutoverworkedorwellnear29—youdidn’t30toenjoymomentsofpeace.31meofthepoemLeisurewrittenbyW.H.Daviesintheearly20thcentury.ItismoreMore32todaythaneverbefore.Notimetostandbeneaththeboughs树干Andstareaslongassheepandcows.NotimetoseethewoodswepassWheresquirrelshidetheirnutsingrass.Andthenwe’re33astowhyasacreaturewe’resoupset.Ifwecan’tbe34withourselveshowcanwehopetofindacommon35wecaninhabitwithothersⅡ．完形填空/Cloze
Writethearticle.Runforclasses.Haven’tfinishedthereadings.Housecleaning.Assignmentto16intwohours.Outofbreathtimeandstilllate.That’sbeenmeforthepastthreeweeks.Andthenyesterdayasmyfingers17hitthekeyboardI18tolookoutside.ThroughthehalfopenblindsofmykitchenwindowIcaughtthebrightglow光线ofsunshine19throughthefreshlycleanedairandshining20theyellow-greenleavesofatree.Itcouldhavebeenthefourdaysofcontinualrainandgraygloomyskiesormyownself21endlessactivity.Idon’tknowwhatitwas22Ijustsattherelookingatthedancingsunrays.Nota23inmyhead.Nocrowdedfeelingsofapproachingworkorpeopleorevenfriends.Justwatching.Ifeltmybody24.Andafteralongtime...feltcalm.Thebreakpassed.Iwentbacktomy25.Butsomethingabouttherhythmoftheday26Itwasthedifferencebetweenrushingtocatchthebusandridingonyourownhorse.LaterthateveningI27howwe’dcometoinhabit居住aplacewhererestandmomentsofpeaceweremeanstobe28.Ifyouweren’ttiredoutoverworkedorwellnear29—youdidn’t30toenjoymomentsofpeace.31meofthepoemLeisurewrittenbyW.H.Daviesintheearly20thcentury.ItismoreMore32todaythaneverbefore.Notimetostandbeneaththeboughs树干Andstareaslongassheepandcows.NotimetoseethewoodswepassWheresquirrelshidetheirnutsingrass.Andthenwe’re33astowhyasacreaturewe’resoupset.Ifwecan’tbe34withourselveshowcanwehopetofindacommon35wecaninhabitwithothersⅡ．完形填空/Cloze
—IwonderwhyMaryissounfriendlytous.—Sheis______thanunfriendlyI'mafraid.
Thereason______Ihavetogois______mymotherisillinbed．
Sincethebeginningofhumanevolutionmenhavemigrated迁移acrosscontinentsinsearchoffoodsheltersafetyandcomfortableweather.Peoplestillmoveforthesereasonsbutnewreasonsforhumanmigrationarearisingsuchasjobrelocation重新安置andoverpopulation.Threemillionmigrantsaremovingfrompoorcountriestowealthieroneseachyearandincreasinglytheirdestinationisaneighboringcountryindevelopingpartsoftheworld.Peoplearemovingwithinthedevelopingworldforthesamereasonsastheymigratetowealthiernations.Peoplefrompoorcountriesaregoingtolesspoorcountriesfleeingwarsandconflicts.Theyarealsorespondingtopopulationpressuresbecausesomecountriesaredenselypopulatedandtheyoftenhavehighpopulationgrowth.Thosepeopleneedtogosomewhereelse.Therearethreemainreasonswhypeoplemove.ThebasiccategoriesandpercentagesareasfollowsaccordingtotheCurrentPopulationSurveysCPS:Family-relatedreasonsaccountfor26.3%includingchangesinmarital婚姻的statusestablishingahouseholdandotherfamilyreasons;work-relatedreasonsaccountfor16.2%includingjobtransferretirementandotherjob-relatedreasons;housing-relatedreasonsaccountfor51.6%includingnewandbetterhousesbetterneighborhoodcheaperhousingandotherhousingreasonstheremaining5.9%ofotherreasonsareattendingcollegethechangeofclimateandhealthreasons．Americanshavebeenmigratingsouthandwestfordecadesinsearchofbetterjobopportunitiesandwarmerclimates．Theyhavealsobeenmovingtoplacesalittlefarfromcitiesinsearchofbiggeryardsandhouseslowercrimeratesandbetterschools．In1950nearlyafifthofthepopulationlivedinthenation’s20largestcities．In2006itwasaboutoneinten．That’swhymanyAmericanpeoplesayBigCitiesShrinkasPeopleMoveSouthWest．BetweenMarch2005andMarch200773.4millionAmericansmoved．Fifty-sixpercentofthesemoveswerewithinthesamecountry．Twentypercentwerebetweencountiesbutinthesamestate．Nineteenpercentweremovestoadifferentstate．Somefamiliesevenwentabroad．TitlePeopleonthe56Lead-inThroughouthuman57peoplehavemigratedacrosscontinents.An58numberofpeoplefrompoorcountriesaremovingto59countriesespeciallyneighboringones.60forpeople’smigrationAccordingtotheCPSthe61ofpeoplemovetootherplacesforreasons62tohousing.Americanshavelongbeenmovingsouthandwestlooking63abetterjobchanceawarmer64andabiggeryardetc.ConclusionNoweveryyearmoreandmorepeoplemovetootherplacewhichseemstohavebecomeaglobal65.
Scienceisadominantthemeinourculture.Sinceittouchesalmosteveryfacetofourlifeeducatedpeopleneedatleastsomeacquaintancewithitsstructureandoperation.Theyshouldalsohaveanunderstandingofthesubcultureinwhichscientistsliveandthekindsofpeopletheyare.Anunderstandingofgeneralcharacteristicsofscienceaswellasspecificscientificconceptsiseasiertoattainifoneknowssomethingaboutthethingsthatexciteandfrustratethescientist.Thisbookiswrittenfortheintelligentstudentorlaypersonwhoseacquaintancewithscienceissuperficial;forthepersonwhohasbeenpresentedwithscienceasamustystorehouseofdriedfacts;forthepersonwhoseesthechiefobjectiveofscienceastheproductionofgadgets;andforthepersonwhoviewsthescientistassomesortofmagician.Thebookcanbeusedtosupplementacourseinanysciencetoaccompanyanycoursethatattemptstogiveanunderstandingofthemodernworldor—independentofanycourse—simplytoprovideabetterunderstandingofscience.Wehopethisbookwillleadreaderstoabroaderperspectiveonscientificattitudesandamorerealisticviewofwhatscienceiswhoscientistsareandwhattheydo.Itwillgivethemanawarenessandunderstandingoftherelationshipbetweenscienceandourcultureandanappreciationoftherolessciencemayplayinourculture.Inadditionreadersmaylearntoappreciatetherelationshipbetweenscientificviewsandsomeofthevaluesandphilosophiesthatarepervasiveinourculture.Wehavetriedtopresentinthisbookanaccurateandup-to-datepictureofthescientificcommunityandthepeoplewhopopulateit.Thatpopulationhasinrecentyearscometocomprisemoreandmorewomen.Thisincreasingroleofwomeninthescientificsubcultureisnotanuniqueincidentbutratherpartofthetrendevidentinallsegmentsofsocietyasmorewomenentertraditionallymale-dominatedfieldsandmakesignificantcontributions.Indiscussingthesechangesandcontributionshoweverwearefacedwithalanguagethatisimplicitlysexistonethatusesmalenounsorpronounsinreferringtounspecifiedindividuals.Tooffsetthisbuilt-inbiaswehaveadoptedthepolicyofusingpluralnounsandpronounswheneverpossibleandWhenabsolutelynecessaryalternatingheandshe.Thispolicyisfarfrombeingidealbutitisatleastanacknowledgmentoftheinadequacyofourlanguageintreatinghalfofthehumanraceequally.Wehavealsotriedtomakethebookentertainingaswellasinformative.Ourapproachisusuallyinformal.Wefeelasdomanyotherscientiststhatweshouldn’ttakeourselvestooseriously.Asthereadermayobserveweseescienceasadelightfulpastimeratherthanasagrimanddrearywaytoearnaliving.Accordingtothepassagescientificsubculturemeans______.
Iwishit______finetomorrow．
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