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A.three B.those C.thank D.theatre
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Throughouthistorymanhashadtoacceptthefactthatalllivingthingsmustdiebutpeoplenowlivelongerthanthey36.Yetalllivingthingsstillshowthe37ofagingwhichwilleventually.38death. 38
A.worked B.defended C.stressed D.finished
Agingisnotadiseasebutasapersonpassesmaturitythecellsofthebodyandthe39theyformdonotfunctionaswellasthey40inchildhoodandadolescence青春期.Thebodyprovidesless41againstdiseaseandismoreprone42accident.Anumberofrelatedcausemay43aging.Somecellsofthebodyhaveafairlylonglifebuttheyarenot44whentheydie.Asapersonages45ofbraincellsandmusclecellsdecrease46bodycellsdieandarereplacedbynewcells.Inanagingpersonthe47cellsmaynotbeasviable能生存的orascapable48growthasthoseofayoungperson.Another49inagingmaybechangeswithinthecells50.Someoftheproteinchemicalsincellsareknown51withageandbecomelesselastic.Thisiswhytheskinofoldpeoplewrinklesand52.Thisisalsothereasonoldpeople53inheight.Theremaybeothermoreimportantchemicalchangesinthecells.SomecomplexcellchemicalssuchasRNAstoreand54informationthatthecellneed.Agingmayaffectthis55andchangetheinformationcarryingmoleculessothattheydonottransmittheinformationaswell. 46
Agingisnotadiseasebutasapersonpassesmaturitythecellsofthebodyandthe39theyformdonotfunctionaswellasthey40inchildhoodandadolescence青春期.Thebodyprovidesless41againstdiseaseandismoreprone42accident.Anumberofrelatedcausemay43aging.Somecellsofthebodyhaveafairlylonglifebuttheyarenot44whentheydie.Asapersonages45ofbraincellsandmusclecellsdecrease46bodycellsdieandarereplacedbynewcells.Inanagingpersonthe47cellsmaynotbeasviable能生存的orascapable48growthasthoseofayoungperson.Another49inagingmaybechangeswithinthecells50.Someoftheproteinchemicalsincellsareknown51withageandbecomelesselastic.Thisiswhytheskinofoldpeoplewrinklesand52.Thisisalsothereasonoldpeople53inheight.Theremaybeothermoreimportantchemicalchangesinthecells.SomecomplexcellchemicalssuchasRNAstoreand54informationthatthecellneed.Agingmayaffectthis55andchangetheinformationcarryingmoleculessothattheydonottransmittheinformationaswell. 54
Peopleborninautumnlivelongerthanthoseborninspringandarelesslikelytofallchronically慢性illwhentheyareolderaccordingtoanAustrianscientist.Usingcensus人口统计dataformorethanonemillionpeopleinAustriaDenmarkandAustraliascientistsattheMaxPlankInstituteforDemographic人口统计的Researchfoundthemonthofbirthwasrelatedtolifeexpectancyovertheageof50.Seasonaldifferencesinwhatmothersateduringpregnancy孕期andinfectionsoccurringatdifferenttimesoftheyearcouldbothhaveanimpactonthehealthofanewbornbabyandcouldinfluenceitslifeexpectancyinolderage. "Amothergivingbirthinspringspendsthelaststageofherpregnancyinwinterwhenshewilleatlessvitaminsthaninsummer"saidoneofthescientists."Whenshestopsbreast-feedingandstartsgivingherbabynormalfoodit’sinthehotweeksofsummerwhenbabieshavetendencytoinfectionsofthedigestivesystem.”InAustriaadultsborninautumnlivedaboutsevenmonthslongerthanthoseborninsprings;andinDenmarkadultswithbirthdaysinautumnoutlivedthoseborninspringbyaboutfourmonths.Inthesouthernhemispherethepictureissimilar.Adult’sburningtheAustralianautumnlivedaboutfourmonthslongerthanthosebornintheAustralianspring.Thestudyfocusedonpeoplebornatthebeginningofthe20thcenturyusingdeathcertificatesandcensusdata.Althoughnutrition营养atalltimesoftheyearhasimprovedsincethentheseasonalpatternpersists. Peopleborninautumnlivelongerthanthoseborninspringbecause
Agingisnotadiseasebutasapersonpassesmaturitythecellsofthebodyandthe39theyformdonotfunctionaswellasthey40inchildhoodandadolescence青春期.Thebodyprovidesless41againstdiseaseandismoreprone42accident.Anumberofrelatedcausemay43aging.Somecellsofthebodyhaveafairlylonglifebuttheyarenot44whentheydie.Asapersonages45ofbraincellsandmusclecellsdecrease46bodycellsdieandarereplacedbynewcells.Inanagingpersonthe47cellsmaynotbeasviable能生存的orascapable48growthasthoseofayoungperson.Another49inagingmaybechangeswithinthecells50.Someoftheproteinchemicalsincellsareknown51withageandbecomelesselastic.Thisiswhytheskinofoldpeoplewrinklesand52.Thisisalsothereasonoldpeople53inheight.Theremaybeothermoreimportantchemicalchangesinthecells.SomecomplexcellchemicalssuchasRNAstoreand54informationthatthecellneed.Agingmayaffectthis55andchangetheinformationcarryingmoleculessothattheydonottransmittheinformationaswell. 52
Doyouthinktheyhavefoodforallthesepeoplehere
A.Showmeyourpassportplease.C.I’mhereonbusiness.E.Youarewelcome.G.Haveapleasanttimehere.B.HaveyougotanythingtodeclareD.MayIhaveyournameF.WhereareyoufromH.MyGod!WhatwasthatAlan:Welcometomycountrymiss.56Lucy:I’mfromCanada.Alan:57Lucy:OK.Hereyouare.Alan:58Lucy:NoIhaven’tgotanydutiable应纳关税的thingswithme.Alan:HowlongwillyoubestayinghereLucy:Aboutamonth.Alan:59Lucy:Thankyouverymuch.Alan:60
A.blood B.loose C.choose D.mood
"Tomorrowwe’llseetheGoldenGateBridge."saidPeter."I’veneverseenagoldenbridgebefore."Peter’sfathersmiledbutsaidnothing.Peterwouldsoonseethebridge. ThenextmorninghisfathertookPetertothebridge.Howbigitlooked!Andthebridgewasred! "Itisn’tnamedforitscolour"saidhisfather."It’snamedfortheGoldenGate." "What’stheGoldenGate"askedPeter. "Agateiseitheranopeningorathingthatclosesanopening"saidhisfather."TheGoldenGateisanopeningintheland.WaterfromtheseacomesthroughthisopeningintoSanFranciscoBay." "Oh"saidPeter."Andthebridgeisovertheopening.ButwhyistheopeningcalledtheGoldenGate" "Yearsagomencameheretotookforgold.Manycamebyship.Forthemitwasagatetogold." "WellIstillthinkthebridgeshouldlookgolden." Whenpetergothomehesentalettertoanewspaper.Intheletterhesaid:"RedisnottherightcolourfortheGoldenGateBridge.Thebridgeshouldlookgoldenthewaymostpeoplethinkitdoes." Petersentallthemoneyhehadsavedwithhisletter."Thismoneyistohelppaintthebridge"hewrote. ManypeoplereadPeter’sletter.Rightawaythingsbegantohappen!Somepeoplesentmoney.Abigcompanygaverealgold. Butnotallthepeoplewantedtochangethecolourofthebridge.WilltheGoldenGateBridgeeverbegolden Peter’sfathersmiledwhenheheardhisson’swordsbecause
Aroundtheworldmoreandmorepeoplearetakingpartindangeroussportsandactivities.Nowtherearepeoplewholookforanimmediateexcitementfromariskyactivitywhichmayonlylastafewminutesorevenseconds. Iwouldconsiderbungeejumping蹦极tobeagoodexampleofsuchanactivity.Youjumpfromahighplace200metersabovethegroundwithanelastic弹性的ropetiedtoyourfeet.Youfallatupto150kilometersanhouruntiltheropestopsyoufromhittingtheground.Itissaidthatabout2millionpeoplearoundtheworldhavenowtriedbungeejumping.Otheractivitieswhichmostpeoplearoundtheworldhavenowtriedbungeeincludejumpingfromtallbuildingsanddivingintotheseafromthetopofhighcliffs. WhydopeopletakepartinsuchactivitiesastheseSomepsychologistssuggestthatitisbecauselifeinmodernsocietieshasbecomesafeandboring.Notverylongagopeople’sliveswereconstantlyindanger.Theyhadtogooutandhuntforfooddiseasescouldnoteasilybecuredandlifewasacontinuousbattleforsurvival. Nowadaysaccordingtomanypeoplelifeofferslittleexcitement.Theyliveadworkinquitesafeconditions;theybuyfoodinshopsandtherearedoctorsandhospitalstolookafterthembecomeill.Theanswerforsomeofthesepeopleistolookfordangerinactivitiessuchasbungeejumping. Oftheriskyactivitiesbungeejumping
"Tomorrowwe’llseetheGoldenGateBridge."saidPeter."I’veneverseenagoldenbridgebefore."Peter’sfathersmiledbutsaidnothing.Peterwouldsoonseethebridge. ThenextmorninghisfathertookPetertothebridge.Howbigitlooked!Andthebridgewasred! "Itisn’tnamedforitscolour"saidhisfather."It’snamedfortheGoldenGate." "What’stheGoldenGate"askedPeter. "Agateiseitheranopeningorathingthatclosesanopening"saidhisfather."TheGoldenGateisanopeningintheland.WaterfromtheseacomesthroughthisopeningintoSanFranciscoBay." "Oh"saidPeter."Andthebridgeisovertheopening.ButwhyistheopeningcalledtheGoldenGate" "Yearsagomencameheretotookforgold.Manycamebyship.Forthemitwasagatetogold." "WellIstillthinkthebridgeshouldlookgolden." Whenpetergothomehesentalettertoanewspaper.Intheletterhesaid:"RedisnottherightcolourfortheGoldenGateBridge.Thebridgeshouldlookgoldenthewaymostpeoplethinkitdoes." Petersentallthemoneyhehadsavedwithhisletter."Thismoneyistohelppaintthebridge"hewrote. ManypeoplereadPeter’sletter.Rightawaythingsbegantohappen!Somepeoplesentmoney.Abigcompanygaverealgold. Butnotallthepeoplewantedtochangethecolourofthebridge.WilltheGoldenGateBridgeeverbegolden Tohelpchangethebridge’scolourPetersent
Agingisnotadiseasebutasapersonpassesmaturitythecellsofthebodyandthe39theyformdonotfunctionaswellasthey40inchildhoodandadolescence青春期.Thebodyprovidesless41againstdiseaseandismoreprone42accident.Anumberofrelatedcausemay43aging.Somecellsofthebodyhaveafairlylonglifebuttheyarenot44whentheydie.Asapersonages45ofbraincellsandmusclecellsdecrease46bodycellsdieandarereplacedbynewcells.Inanagingpersonthe47cellsmaynotbeasviable能生存的orascapable48growthasthoseofayoungperson.Another49inagingmaybechangeswithinthecells50.Someoftheproteinchemicalsincellsareknown51withageandbecomelesselastic.Thisiswhytheskinofoldpeoplewrinklesand52.Thisisalsothereasonoldpeople53inheight.Theremaybeothermoreimportantchemicalchangesinthecells.SomecomplexcellchemicalssuchasRNAstoreand54informationthatthecellneed.Agingmayaffectthis55andchangetheinformationcarryingmoleculessothattheydonottransmittheinformationaswell. 44
Spaceisadangerousplacenotonlybecauseofmeteorsbutalsobecauseofraysfromthesunandotherstars.Theatmosphereagainactsasourprotectiveblanketonearth.Lightgetsthroughandthisisessentialforplantstomakethefoodwhichweeat.Heattoomakesourenvironmentendurable.Variouskindsofrayscomethroughtheairfromouterspacebutenormousquantitiesofradiationfromthesunarescreenedoff.Assoonasmenleavetheatmospheretheyareexposedtothisradiationbuttheirspacesuitsorthewallsoftheirspacecraftiftheyareinsidedopreventalotofradiationdamage. Radiationisthegreatestknowndangertoexplorersinspace.Theunitofradiationiscalled"rem".Scientistshavereasontothinkthatamancanputupwithfarmoreradiationthan0.1reamwithoutbeingdamaged;thefigureof60remshasbeenagreedon.Thetroubleisthatitisextremelydifficulttobesureaboutradiationdamage--apersonmayfeelperfectlywellbutthecellsofhisorhersexorgansmaybedamagedandthiswillnotbediscovereduntilthebirthofdeformed畸形的childrenorevengrandchildren.MissionsoftheApolloflightshavehadtocrossbeltsofhighradiationandduringtheoutwardandreturnjourneystheApollocrewaccumulatedalargeamountofreams.SofarnodangerousamountsofradiationhavebeenreportedbuttheApollomissionshavebeenquiteshort.Wesimplydonotknowyethowmenaregoingtogetonwhentheyspendweeksandmonthsoutsidetheprotectionoftheatmosphereworkinginaspacelaboratory.Drugsmighthelptodecreasethedamagedonebyradiationbutnoreallyeffectiveoneshavebeenfoundsofar. Itcanbeinferredfromthepassagethat
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Agingisnotadiseasebutasapersonpassesmaturitythecellsofthebodyandthe39theyformdonotfunctionaswellasthey40inchildhoodandadolescence青春期.Thebodyprovidesless41againstdiseaseandismoreprone42accident.Anumberofrelatedcausemay43aging.Somecellsofthebodyhaveafairlylonglifebuttheyarenot44whentheydie.Asapersonages45ofbraincellsandmusclecellsdecrease46bodycellsdieandarereplacedbynewcells.Inanagingpersonthe47cellsmaynotbeasviable能生存的orascapable48growthasthoseofayoungperson.Another49inagingmaybechangeswithinthecells50.Someoftheproteinchemicalsincellsareknown51withageandbecomelesselastic.Thisiswhytheskinofoldpeoplewrinklesand52.Thisisalsothereasonoldpeople53inheight.Theremaybeothermoreimportantchemicalchangesinthecells.SomecomplexcellchemicalssuchasRNAstoreand54informationthatthecellneed.Agingmayaffectthis55andchangetheinformationcarryingmoleculessothattheydonottransmittheinformationaswell. 42
A.Showmeyourpassportplease.C.I’mhereonbusiness.E.Youarewelcome.G.Haveapleasanttimehere.B.HaveyougotanythingtodeclareD.MayIhaveyournameF.WhereareyoufromH.MyGod!WhatwasthatAlan:Welcometomycountrymiss.56Lucy:I’mfromCanada.Alan:57Lucy:OK.Hereyouare.Alan:58Lucy:NoIhaven’tgotanydutiable应纳关税的thingswithme.Alan:HowlongwillyoubestayinghereLucy:Aboutamonth.Alan:59Lucy:Thankyouverymuch.Alan:60
Don'tbecarelessagain
Throughouthistorymanhashadtoacceptthefactthatalllivingthingsmustdiebutpeoplenowlivelongerthanthey36.Yetalllivingthingsstillshowthe37ofagingwhichwilleventually.38death. 36
Agingisnotadiseasebutasapersonpassesmaturitythecellsofthebodyandthe39theyformdonotfunctionaswellasthey40inchildhoodandadolescence青春期.Thebodyprovidesless41againstdiseaseandismoreprone42accident.Anumberofrelatedcausemay43aging.Somecellsofthebodyhaveafairlylonglifebuttheyarenot44whentheydie.Asapersonages45ofbraincellsandmusclecellsdecrease46bodycellsdieandarereplacedbynewcells.Inanagingpersonthe47cellsmaynotbeasviable能生存的orascapable48growthasthoseofayoungperson.Another49inagingmaybechangeswithinthecells50.Someoftheproteinchemicalsincellsareknown51withageandbecomelesselastic.Thisiswhytheskinofoldpeoplewrinklesand52.Thisisalsothereasonoldpeople53inheight.Theremaybeothermoreimportantchemicalchangesinthecells.SomecomplexcellchemicalssuchasRNAstoreand54informationthatthecellneed.Agingmayaffectthis55andchangetheinformationcarryingmoleculessothattheydonottransmittheinformationaswell. 50
Peopleborninautumnlivelongerthanthoseborninspringandarelesslikelytofallchronically慢性illwhentheyareolderaccordingtoanAustrianscientist.Usingcensus人口统计dataformorethanonemillionpeopleinAustriaDenmarkandAustraliascientistsattheMaxPlankInstituteforDemographic人口统计的Researchfoundthemonthofbirthwasrelatedtolifeexpectancyovertheageof50.Seasonaldifferencesinwhatmothersateduringpregnancy孕期andinfectionsoccurringatdifferenttimesoftheyearcouldbothhaveanimpactonthehealthofanewbornbabyandcouldinfluenceitslifeexpectancyinolderage. "Amothergivingbirthinspringspendsthelaststageofherpregnancyinwinterwhenshewilleatlessvitaminsthaninsummer"saidoneofthescientists."Whenshestopsbreast-feedingandstartsgivingherbabynormalfoodit’sinthehotweeksofsummerwhenbabieshavetendencytoinfectionsofthedigestivesystem.”InAustriaadultsborninautumnlivedaboutsevenmonthslongerthanthoseborninsprings;andinDenmarkadultswithbirthdaysinautumnoutlivedthoseborninspringbyaboutfourmonths.Inthesouthernhemispherethepictureissimilar.Adult’sburningtheAustralianautumnlivedaboutfourmonthslongerthanthosebornintheAustralianspring.Thestudyfocusedonpeoplebornatthebeginningofthe20thcenturyusingdeathcertificatesandcensusdata.Althoughnutrition营养atalltimesoftheyearhasimprovedsincethentheseasonalpatternpersists. WhichofthefollowingtermsisEXCLUDEDfromthescientists’DemographicResearch
Agingisnotadiseasebutasapersonpassesmaturitythecellsofthebodyandthe39theyformdonotfunctionaswellasthey40inchildhoodandadolescence青春期.Thebodyprovidesless41againstdiseaseandismoreprone42accident.Anumberofrelatedcausemay43aging.Somecellsofthebodyhaveafairlylonglifebuttheyarenot44whentheydie.Asapersonages45ofbraincellsandmusclecellsdecrease46bodycellsdieandarereplacedbynewcells.Inanagingpersonthe47cellsmaynotbeasviable能生存的orascapable48growthasthoseofayoungperson.Another49inagingmaybechangeswithinthecells50.Someoftheproteinchemicalsincellsareknown51withageandbecomelesselastic.Thisiswhytheskinofoldpeoplewrinklesand52.Thisisalsothereasonoldpeople53inheight.Theremaybeothermoreimportantchemicalchangesinthecells.SomecomplexcellchemicalssuchasRNAstoreand54informationthatthecellneed.Agingmayaffectthis55andchangetheinformationcarryingmoleculessothattheydonottransmittheinformationaswell. 40
A.Showmeyourpassportplease.C.I’mhereonbusiness.E.Youarewelcome.G.Haveapleasanttimehere.B.HaveyougotanythingtodeclareD.MayIhaveyournameF.WhereareyoufromH.MyGod!WhatwasthatAlan:Welcometomycountrymiss.56Lucy:I’mfromCanada.Alan:57Lucy:OK.Hereyouare.Alan:58Lucy:NoIhaven’tgotanydutiable应纳关税的thingswithme.Alan:HowlongwillyoubestayinghereLucy:Aboutamonth.Alan:59Lucy:Thankyouverymuch.Alan:60
Aroundtheworldmoreandmorepeoplearetakingpartindangeroussportsandactivities.Nowtherearepeoplewholookforanimmediateexcitementfromariskyactivitywhichmayonlylastafewminutesorevenseconds. Iwouldconsiderbungeejumping蹦极tobeagoodexampleofsuchanactivity.Youjumpfromahighplace200metersabovethegroundwithanelastic弹性的ropetiedtoyourfeet.Youfallatupto150kilometersanhouruntiltheropestopsyoufromhittingtheground.Itissaidthatabout2millionpeoplearoundtheworldhavenowtriedbungeejumping.Otheractivitieswhichmostpeoplearoundtheworldhavenowtriedbungeeincludejumpingfromtallbuildingsanddivingintotheseafromthetopofhighcliffs. WhydopeopletakepartinsuchactivitiesastheseSomepsychologistssuggestthatitisbecauselifeinmodernsocietieshasbecomesafeandboring.Notverylongagopeople’sliveswereconstantlyindanger.Theyhadtogooutandhuntforfooddiseasescouldnoteasilybecuredandlifewasacontinuousbattleforsurvival. Nowadaysaccordingtomanypeoplelifeofferslittleexcitement.Theyliveadworkinquitesafeconditions;theybuyfoodinshopsandtherearedoctorsandhospitalstolookafterthembecomeill.Theanswerforsomeofthesepeopleistolookfordangerinactivitiessuchasbungeejumping. Whichofthefollowingistrueaccordingtothepassage
Whatcanwedoforthemallthehelptheyhavegivenus
Agingisnotadiseasebutasapersonpassesmaturitythecellsofthebodyandthe39theyformdonotfunctionaswellasthey40inchildhoodandadolescence青春期.Thebodyprovidesless41againstdiseaseandismoreprone42accident.Anumberofrelatedcausemay43aging.Somecellsofthebodyhaveafairlylonglifebuttheyarenot44whentheydie.Asapersonages45ofbraincellsandmusclecellsdecrease46bodycellsdieandarereplacedbynewcells.Inanagingpersonthe47cellsmaynotbeasviable能生存的orascapable48growthasthoseofayoungperson.Another49inagingmaybechangeswithinthecells50.Someoftheproteinchemicalsincellsareknown51withageandbecomelesselastic.Thisiswhytheskinofoldpeoplewrinklesand52.Thisisalsothereasonoldpeople53inheight.Theremaybeothermoreimportantchemicalchangesinthecells.SomecomplexcellchemicalssuchasRNAstoreand54informationthatthecellneed.Agingmayaffectthis55andchangetheinformationcarryingmoleculessothattheydonottransmittheinformationaswell. 48
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