老托段子93篇Word格式文档下载.docx
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老托段子93篇Word格式文档下载.docx
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msureyou'
llenjoythiscommunityserviceandyou'
llgainvaluableexperienceatthesametime.Itlooksgoodonyourresume,too,showingthatyou'
vehadexperiencewithchildrenandthatyoucareaboutyourcommunity.Ifyou'
dliketosignup,orifyouhaveanyquestions,stopbyProfessorDodge'
sofficethisweek.
2
Ihopeyou'
veallfinishedreadingtheassignedchapteroninsurancesothatyou'
repreparedforourdiscussiontoday.But,beforewestart,I'
dliketomentionafewthingsyourtextdoesn'
tgointo.It'
sinterestingtonotethatinsurancehasexistedinsomeformforaverylongtime.Theearliestinsurancepolicieswerewhatwecalledbottomrycontracts.Theyprovidedshippingprotectionformerchantsasfarbackas3000B.C.Ingeneral,thecontractswereoftennomorethanverbalagreements.Theygrantedloanstomerchantswiththeunderstandingthatifaparticularshipmentofgoodswaslostatsea,theloandidn'
thavetoberepaid.Interestontheloansvariedaccordingtohowriskyitwastotransportthegoods.Duringperiodsofheavypiracyatsea,forexample,theamountofinterestandthecostofthepolicywentupconsiderably.So,youcanseehowinsurancehelpedencourageinternationaltrade.Eventhemostcautiousmerchantsbecamewillingtoriskshippingtheirgoodsoverlongdistances,nottomentioninhazardousweatherconditionswhentheyhadthiskindofprotectionavailable.Generallyspeaking,thebasicformofaninsurancepolicyhasbeenprettymuchthesamesincetheMiddleAges.Therearefourpointsthatweresalientthenandremainparamountinallpoliciestoday.Therewereoutlinedinchaptersixandwillserveasthebasisfortherestoftheoftoday'
sdiscussion.Cananyonetellmewhatoneofthosepointsmightbe?
3
LocatedattheNASAResearchCenterinIowaisa5,000-gallonvatofwater,andinsidethetankisanunderwatertreadmilldesignedbyDavaNewman,anaerospaceengineer.ForfouryearsNewmanobservedscubadiversastheysimulatedwalkingontheMoonandonMarsonherunderwatermovingbelt.ShewantedtodiscoverhowthegravityoftheMoonandofMarswouldaffecthumanmovement.Todothis,Newmanattachedweightstothediversandthenloweredthemintothetankandontothetreadmill.TheseweightswerecarefullyadjustedsothatthediverscouldexperienceunderwaterthegravityoftheMoonandofMarsastheywalkedonthetreadmill.NewmanconcludedthatwalkingonMarswillprobablybeeasierthanwalkingontheMoon.TheMoonhaslessgravitythanMarsdoes,soatlunargravity,thediversstruggledtokeeptheirbalanceandwalkedawkwardly.ButatMartiangravity,thedivershadgreatertractionandstabilityandcouldeasilyadjusttoapaceof1.5milesperhour.AsNewmangraduallyincreasedthespeedofthetreadmill,thediverstooklonger,gracefulstridesuntiltheycomfortablysettledintoanevenquickerpace.NewmanalsonotedthatatMartiangravity,thediversneededlessoxygen.ThedataNewmancollectedwillhelpinthefuturedesignofMartianspacesuits.Comparedtolunarspacesuits,Martianspacesuitswillrequiresmallerairtanks;
and,toallowforfreermovement,theelbowandkneeareasofthespacesuitswillalsobealtered.
4
WelcometoEvergladesNationalPark.TheEvergladesisawateryplaincoveredwithsawgrassthat'
shometonumerousspeciesofplantsandwildlife.Atoneandahalfmillionacres,it'
stoobigtoseeitalltoday,butthistourwillofferyouagoodsampling.OurtourbuswillstopfirstatTaylorSlough.Thisisagoodplacetostartbecauseit'
shometomanyoftheplantsandanimalstypicallyassociatedwiththeEverglades.You'
llseemanyexoticbirdsand,ofcourse,ourworldfamousalligators.Don'
tworry,there'
saboardwalkthatgoesacrossthemarsh,soyoucanlookdownattheanimalsinthewaterfromasafedistance.Theboardwalkishighenoughtogiveyouagreatviewofthesawgrassprairie.Fromtherewe'
llheadtosomeothermarshyandevenjunglelikeareasthatfeaturewonderfultropicalplantlife.Forthoseofyouwho'
dlikeacloserviewofthesawgrassprairie,youmightconsiderrentingacanoesometimeduringyourvisithere.However,don'
tdothisunlessyouhaveaverygoodsenseofdirectionandcannegotiateyourwaythroughtallgrass.We'
dhatetohavetocomelookingforyou.Youhavethegoodfortuneofbeinghereinthewinter—thebesttimeofyeartovisit.Duringthespringandsummer,themosquitoeswilljustabouteatyoualive!
Rightnowthey'
renotsobothersome,butyou'
llstillwanttouseaninsectrepellent.
5
Thankyou.It'
sgreattoseesomanyofyouinterestedinthisserieson"
SurvivalinOuterSpace."
Pleaseexcusethecameras,we'
rebeingvideotapedforthelocalTVstations.TonightI'
mgoingtotalkaboutthemostbasicaspectofsurvival—thespacesuit.Whenmostofyouimagineanastronaut,that'
sprobablythefistthingthatcomestomind,right?
Well,withoutspacesuits,itwouldnotbepossibleforustosurviveinspace.Forexample,outerspaceisavacuum—there'
snogravityorairpressure;
withoutprotection,abodywouldexplode.What'
smore,we'
dcookinthesunorfreezeintheshadewithtemperaturesrangingfromatoasty300degreesabovetoacool300degreesbelowzeroFahrenheit.ThespacesuitthatNASAhasdevelopedistrulyamarvel.Thisphotoenlargementhereisalife-sizeimageofanactualspacesuitwornbyastronautsonthelastspaceshuttlemission.Thispartisthetorso.It’smadeofsevenextremelydurablelayers.Thisthickinsulationprotectsagainsttemperatureextremesandradiation.Nextiswhattheycalla"
bladder"
ofoxygenthat'
saninflatablesac,filledwithoxygen,tosimulateatmosphericpressure.ThisbladderpressesagainstthebodywiththesameforceastheEarth'
satmosphereatsealevel.Theinnermostlayersprovideliquidcoolingandventilation.Despiteallthelayers,thesuitisflexible,allowingfreemovementsowecanwork.Anotherreallysophisticatedpartofthespacesuitisthehelmet.Ibroughtonealongtoshowyou.CanIhaveavolunteercomeanddemonstrate?
6
Goodevening.MynameisPamJones,andonbehalfoftheModernDanceclub,I'
dliketowelcomeyoutotonight'
sprogram.TheclubispleasedtopresenttheTVversionofTheCatherineWheel,TwylaTharp'
srockballet.Thisvideoversionoftheballethasbeenevenmoresuccessfulwithaudiencesthantheoriginaltheaterproduction.Itincludessomeanimation,slowmotion,andstop-actionfreezesthatreallyhelptheaudienceunderstandthedance.ThetitleofthepiecereferstoSaintCatherine,whodiedonawheelin307A.D.Nowadays,aCatherinewheelisalsoakindoffirework.Itlookssomethinglikeapinwheel.Anyway,thedanceiscertainlyfulloffireworks!
You'
llseehowTwylaTharpexploresonefamily'
sattempttoconfronttheviolenceinmodernlife.Thecentralsymboloftheworkisapineapple,butexactlywhatitrepresentshasalwayscreatedalotofcontroversy.Asyouwatch,seeifyoucanfigureitout.Themusicforthispieceisfulloftherhythmicenergyofrockmusic.ItwascomposedbyDavidByrne.OftherockbandTalkingHeads?
AndtheleaddancerinthisversionwasSaraRudner,whoisperfectlysuitedtoTharp'
sadventurouschoreography.Followingthevideo,danceteacherMaryParkerwillleadadiscussionaboutthesymbolismMs.Tharpused.Wehopeyoucanstayforthat.So,enjoytonight'
svideoandthankyouforyoursupport.
7
Inourlabtoday,we'
llbetestingthehypothesisthatbabiescancountasearlyasfivemonthsofage.Thesixbabiesherearealllessthansixmonthsold.You'
llbewatchingthemonclosed-circuitTVandmeasuringtheirresponses.Theexperimentisbasedonthewell-establishedobservationthatbabiesstarelongeriftheydon'
tseewhattheyexpecttosee.First,we'
regoingtolettwodollsmoveslowlyinfrontofthebabies.Thebabieswillseethetwodollsdisappearbehindascreen.Yourjobistorecord,inseconds,howlongthebabiesstareatthedollswhenthescreenisremoved.Inthenextstage,twodollswillagainmoveinfrontofthebabiesanddisappear.Butthenathirddollwillfollow.Whenthescreenisremoved,thebabieswillonlyseetwodolls.Ifwe'
reright,thebabieswillnowstarelongerbecausetheyexpectthreedollsbutonlyseetwo.Itseemsremarkabletothinkthatsuchyoungchildrencancount.Myownresearchhasconvincedmethattheyhavethisabilityfrombirth.Butwhethertheydoornot,perhapsweshouldraiseanotherquestion.Shouldwetakeadvantageofthisabilitybyteachingchildrenmathematicsatsuchayoungage?
Theyhavegreatuntappedpotential,butisitgoodforparentstopressureyoungchildren?
8
BeforestartingourtourofMonticello,I'
dliketogiveyousomehistoricalfactsthatmighthelpyouappreciatewhatyouseetodayevenmore.Monticellowastheverymuch
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