新概念4 48篇Word格式.docx
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新概念4 48篇Word格式.docx
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modernmen'
camefrom.
Fortunately,however,ancientmenmadetoolsofstone,especiallyflint,becausethisiseasiertoshapethanotherkinds.Theymayalsohaveusedwoodandskins,butthesehaverottedaway.Stonedoesnotdecay,andsothetoolsoflongagohaveremainedwheneventhebonesofthemenwhomadethemhavedisappearedwithouttrace.
Lesson2
Sparethatspider
Why,youmaywonder,shouldspidersbeourfriends?
Becausetheydestroysomanyinsects,andinsectsincludesomeofthegreatestenemiesofthehumanrace.Insectswouldmakeitimpossibleforustoliveintheworld;
theywoulddevourallourcropsandkillourflocksandherds,ifitwerenotfortheprotectionwegetfrominsect-eatinganimals.Weowealottothebirdsandbeastswhoeatinsectsbutallofthemputtogetherkillonlyafractionofthenumberdestroyedbyspiders.Moreover,unlikesomeoftheotherinsecteaters,spidersneverdotheleastharmtousorourbelongings.
Spidersarenotinsects,asmanypeoplethink,norevennearlyrelatedtothem.Onecantellthedifferencealmostataglanceforaspideralwayshaseightlegsandaninsectnevermorethansix.
Howmanyspidersareengagedinthisworkonourbehalf?
OneauthorityonspidersmadeacensusofthespidersinagrassfieldinthesouthofEngland,andheestimatedthatthereweremorethan2,250,000inoneacre,thatissomethinglike6,000,000spidersofdifferentkindsonafootballpitch.Spidersarebusyforatleasthalftheyearinkillinginsects.Itisimpossibletomakemorethanthewildestguessathowmanytheykill,buttheyarehungrycreatures,notcontentwithonlythreemealsaday.IthasbeenestimatedthattheweightofalltheinsectsdestroyedbyspidersinBritaininoneyearwouldbegreaterthanthetotalweightofallthehumanbeingsinthecountry.
T.H.GILLESPIESparethatSpiderfromTheListener
Lesson3
Matterhornman
Modernalpiniststrytoclimbmountainsbyaroutewhichwillgivethemgoodsport,andthemoredifficultitis,themorehighlyitisregarded.Inthepioneeringdays,however,thiswasnotthecaseatall.Theearlyclimberswerelookingfortheeasiestwaytothetopbecausethesummitwastheprizetheysought,especiallyifithadneverbeenattainedbefore.Itistruethatduringtheirexplorationstheyoftenfaceddifficultiesanddangersofthemostperilousnature,equippedinamannerwhichwouldmakeamodernclimbershudderatthethought,buttheydidnotgooutoftheirwaytocourtsuchexcitement.Theyhadasingleaim,asolitarygoal--thetop!
Itishardforustorealizenowadayshowdifficultitwasforthepioneers.ExceptforoneortwoplacessuchasZermattandChamonix,whichhadrapidlybecomepopular,Alpinevillagestendedtobeimpoverishedsettlementscutofffromcivilizationbythehighmountains.Suchinnsastherewereweregenerallydirtyandflea-ridden;
thefoodsimplylocalcheeseaccompaniedbybreadoftentwelvemonthsold,allwasheddownwithcoarsewine.Oftenavalleyboastednoinnatall,andclimbersfoundshelterwherevertheycould--sometimeswiththelocalpriest(whowasusuallyaspoorashisparishioners),sometimeswithshepherdsorcheesemakers.Invariablythebackgroundwasthesame:
dirtandpoverty,andveryuncomfortable.Formenaccustomedtoeatingseven-coursedinnersandsleepingbetweenfinelinensheetsathome,thechangetotheAlpsmusthavebeenveryhardindeed.
Lesson4
Seeinghands
IntheSovietUnionseveralcaseshavebeenreportedrecentlyofpeoplewhocanreadanddetectcolourswiththeirfingers,andevenseethroughsoliddoorsandwalls.Onecaseconcernsan'
eleven-year-oldschoolgirl,VeraPetrova,whohasnormalvisionbutwhocanalsoperceivethingswithdifferentpartsofherskin,andthroughsolidwalls.Thisabilitywasfirstnoticedbyherfather.Onedayshecameintohisofficeandhappenedtoputherhandsonthedoorofalockedsafe.Suddenlysheaskedherfatherwhyhekeptsomanyoldnewspaperslockedawaythere,andevendescribedthewaytheyweredoneupinbundles.
Vera'
scurioustalentwasbroughttothenoticeofascientificresearchinstituteinthetownofUIyanovsk,nearwhereshelives,andinAprilshewasgivenaseriesoftestsbyaspecialcommissionoftheMinistryofHealthoftheRussianFederalRepublic.Duringthesetestsshewasabletoreadanewspaperthroughanopaquescreenand,strangerstill,bymovingherelbowoverachild'
sgameofLottoshewasabletodescribethefiguresandcoloursprintedonit;
and,inanotherinstance,wearingstockingsandslippers,tomakeoutwithherfoottheoutlinesandcoloursofapicturehiddenunderacarpet.Otherexperimentsshowedthatherkneesandshouldershadasimilarsensitivity.DuringallthesetestsVerawasblindfold;
and,indeed,exceptwhenblindfoldshelackedtheabilitytoperceivethingswithherskin.ltwasalsofoundthatalthoughshecouldperceivethingswithherfingersthisabilityceasedthemomentherhandswerewet.
Lesson5
Youth
Peoplearealwaystalkingabout'
theproblemofyouth'
.Ifthereisone—whichItakeleavetodoubt--thenitisolderpeoplewhocreateit,nottheyoungthemselves.Letusgetdowntofundamentalsandagreethattheyoungareafterallhumanbeings--peoplejustliketheirelders.Thereisonlyonedifferencebetweenanoldmanandayoungone:
theyoungmanhasagloriousfuturebeforehimandtheoldonehasasplendidfuturebehindhim:
andmaybethatiswheretherubis.
WhenIwasateenager,IfeltthatIwasjustyounganduncertain--thatIwasanewboyinahugeschool,andIwouldhavebeenverypleasedtoberegardedassomethingsointerestingasaproblem.Foronething,beingaproblemgivesyouacertainidentity,andthatisoneofthethingstheyoungarebusilyengagedinseeking.
Ifindyoungpeopleexciting.Theyhaveanairoffreedom,andtheyhavenotadrearycommitmenttomeanambitionsorloveofcomfort.Theyarenotanxioussocialclimbers,andtheyhavenodevotiontomaterialthings.Allthisseemstometolinkthemwithlife,andtheoriginsofthings.It'
sasiftheywereinsomesensecosmicbeingsinviolentandlovelycontrastwithussuburbancreatures.AllthatisinmymindwhenImeetayoungperson.Hemaybeconceited,illmannered,presumptuousoffatuous,butIdonotturnforprotectiontodrearycliché
saboutrespectforelders--asifmereagewereareasonforrespect.Iacceptthatweareequals,andIwillarguewithhim,asanequal,ifIthinkheiswrong.
Lesson6
Thesportingspirit
IamalwaysamazedwhenIhearpeoplesayingthatsportcreatesgoodwillbetweenthenations,andthatifonlythecommonpeoplesoftheworldcouldmeetoneanotheratfootballorcricket,theywouldhavenoinclinationtomeetonthebattlefield.Evenifonedidn'
tknowfromconcreteexamples(the1936OlympicGames,forinstance)thatinternationalsportingcontestsleadtoorgiesofhatred,onecoulddeduceitfromgeneralprinciples.
Nearlyallthesportspractisednowadaysarecompetitive.Youplaytowin,andthegamehaslittlemeaningunlessyoudoyourutmosttowin.Onthevillagegreen,whereyoupickupsidesandnofeelingoflocalpatriotismisinvolved,itispossibletoplaysimplyforthefunandexercise:
butassoonasthequestionofprestigearises,assoonasyoufeelthatyouandsomelargerunitwillbedisgracedifyoulose,themostsavagecombativeinstinctsarearoused.Anyonewhohasplayedeveninaschoolfootballmatchknowsthis.Attheinternationallevelsportisfranklymimicwarfare.Butthesignificantthingisnotthebehaviouroftheplayersbuttheattitudeofthespectators:
and,behindthespectators,ofthenations.whoworkthemselvesintofuriesovertheseabsurdcontests,andseriouslybelieve--atanyrateforshortperiods--thatrunning,jumpingandkickingaballaretestsofnationalvirtue.
Lesson7
Bats
Notallsoundsmadebyanimalsserveaslanguage,andwehaveonlytoturntothatextraordinarydiscoveryofecho-locationinbatstoseeacaseinwhichthevoiceplaysastrictlyutilitarianrole.
Togetafullappreciationofwhatthismeanswemustturnfirsttosomerecenthumaninventions.Everyoneknowsthatifheshoutsinthevicinityofawalloramountainside,anechowillcomeback.Thefurtheroffthissolidobstructionthelongertimewillelapseforthereturnoftheecho.Asoundmadebytappingonthehullofashipwillbereflectedfromtheseabottom,andbymeasuringthetimeintervalbetweenthetapsandthereceiptoftheechoesthedepthoftheseaatthatpointcanbecalculated.Sowasborntheecho-soundingapparatus,nowingeneraluseinships.Everysolidobjectwillreflectasound,varyingaccordingtothesizeandnatureoftheobject.Ashoaloffishwilldothis.Soitisacomparative
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