新課標(biāo)人教版選修8Unit3課文

新課標(biāo)人教版選修8Unit3課文TheProblemOfTheSnakesWhenIcalledupmymotherinthecountrysideonthetelephoneshewasveryupset.Therearesomesnakesinourcourtyard,shetoldme.Snakescomenearthehousenowandthen,andtheyseemtohavemadethemgetridofyoufarfromthewalnuttree.Canhere,theirhomenotdistinguishtochancewasafor.meplease?Ifeltveryproud.Herethatwouldcatchsnakesbutnotmercifulmyselfbyinventingsomethinglivingthesetohurtmemyparentswouldnotlikethem.harmIknewcreatures!ThefirstthingIdidwastoseeiftherewereanyproductsthatmightthereonlyseemedtobepowdersdesignedtokillsnakes.helpme,butAnewapproachwasclearlyneeded.Isetaboutresearchingthehabitsofsnakestofindtheeasiestwaytotrapthem.Luckilythesereptilesaresmallandthatmadethesolutioneasier.Preparedwithsomeresearchfindings,Idecidedonthreepossibleapproaches:firstly,removingtheirhabitat;secondly,attractingthemintoatrapusingmaleorfemaleperfumeorfood;andthirdlycoolingthemsothattheywouldbecomesleepyandcouldbeeasilycaught.Idecidedtousethelastone.Iboughtanice-creammakerwhichwasmadeofstainlesssteel.Betweentheoutsideandtheinsidewallsofthebowlthereissomejelly,whichfreezeswhencooled.Iputthebowlintothefridge andwaitedfor24hours.AtthesametimeIpreparedsomeice-cubes.新課標(biāo)人教版選修8Unit3課文ThenextmorningIgotupearlybeforethesunwashot.Iplacedthefrozenbowloverthesnakes'habitatandtheice-cubesontopofthebowlbucket.withalargeFinallyIcoveredthewholethingcool.tokeepitThenIwaited.AftertwohoursIremovedthebucketandthebowl.Thesnakeswerelessactivebuttheywerestilltoofastforme.Theyabruptlydisappearedintoaconvenientholeinthewall.SoIhadtoadjustmyplan.ForthesecondattemptIfrozethebowlandtheice-cubesagainbuttemperaturetheevening,astheoverthesnakes'habitatinplacedthemwasstartingtocool.Thenasbefore,Icoveredthebowlwiththebucketandlefteverythingovernight.EarlythenextmorningIreturnedtoseethesnakesexaminethetocautionIbentdownThisresult.timewithgreatandIfoundthemverysleepy.Butoncepickedup,theytriedtobiteme.Astheywerepoisonoussnakes,Iclearlyneededtoimprovemydesignagain.Mythirdattemptrepeatedthesecondprocedure.ThenextmorningItheinfish.Thiswasformyhandasmallnetusedcatchingcarriedinexpectationthatthesnakeswouldbiteagain.Butmonitoredcarefully,thesnakesprovedtobenotroubleandallwentaccordingtoplan.Icollectedthepassivesnakesandthenextdaywemerrilyreleasedthemallbackintothewild.Pressedbymyfriendsandrelations,Idecidedtoseizethemysendingbyideasuccessfulmyforrecognitiongettoopportunity8Unit3課文新課標(biāo)人教版選修Onlyafteryouhavehadthat工一cognitioninventiontothepatentoffice.Thecriteriaaresostrictthatitcanyousaythatyouaretrulyaninventor.Innovel.theyaretrulyunlessisdifficulttogetnewideasacceptedaddition,noinventionwillgetapatentifitis:adiscoveryascientificideaormathematicalmodelliteratureorartagameorabusinessacomputerprogrammeanewanimalorplantvarietyoutfindmadetoasearchhasbeenuntilyouNorwill工一c一iv一apat一ntTherearealargethatyourproductreallyisdifferentfromeveryoneelse's.numberofpatentexaminers,too,whoseonlyjobistoexaminewhetheryourclaimisvalidornot.Ifitpassesallthetests,yourapplicationforapatentwillbepublished18monthsfromthedateyouapply.SoIhavefilledintheformandfiledmypatentapplicationwiththePatentOffice.Nowit'samatterofwaitingandhoping.You'llknowifIsucceedbythesizeofmybankbalance!Wishmeluck!ALEXANDERGRAHAMBELL新課標(biāo)人教版選修8Unit3課文AlexanderGrahamBellwasbornin1847inScotland,butwhenhewasyounghisfamilymovedtoBoston,USA.Hismotherwasalmostentirelydeaf,soAlexanderbecameinterestedinhelpingdeafpeoplecommunicateandindeafeducation.Thisinterestledhimtoinventthemicrophone.Hefoundthatbypressinghislipsagainsthismother'sforehead,hecouldmakehismotherunderstandwhathewassaying.Hebelievedthatoneshouldalwaysbecuriousandhismostfamoussayingwas:Leavethebeatentrackoccasionallyanddiveintothewoods.Everytimeyoudoyouwillbecertaintofindsomethingthatyouhaveneverseenbefore.Followitup,exploreallaroundit,andbeforeyouknowit,youwillhavesomethingworththinkingabouttooccupyyourmind.Allreallybigdiscoveriesaretheresultofthought.Itwasthisexploringaroundproblemsandhisdynamicspiritthatledtohismostfamousinvention-thetelephonein1876.Bellneversetouttoinventthetelephoneandwhathewastryingtodesignwasamultipletelegraph.ThisoriginaltelegraphsentamessageoverdistancesusingMorsecode(aseriesofdotstappedoutalongawireinaparticularorder).Butonlyonemessagecouldgoatatime.Bellwantedtoimproveitsothatitcouldsendseveralmessagesatthesametime.Hedesignedamachinethatwouldseparatedifferentsoundwavesandallowdifferent新課標(biāo)人教版選修8Unit3課文conversationstobeheldatthesametime.Buthefoundtheproblemdifficulttosolve.Onedayashewasexperimentingwithoneendofastrawjoinedtoadeafman'seardrumandtheothertoapieceofsmokedglass,Bellnoticedthatwhenhespokeintotheear,thestrawdrewsoundwavesontheglass.Suddenlyhehadaflashofinspiration.Ifsoundwavescouldbereproducedinamovingelectricalcurrent,theycouldbesentalongawire.Insearchingtoimprovethetelegraph,Bellhadinventedthefirsttelephone!Bellwasfullyawareoftheimportanceofhisinventionandwrotetohisfather:Thedayiscomingwhentelegraphwireswillbelaidontohousesjustlikewaterorgas-andfriendswilltalktoeachotherwithoutleavinghome.Thepatentwasgivenin1876,butitwasnotuntilfivedayslaterthatBellsenthisfirsttelephonemessagetohisassistantWatson.Thewordshavenowbecomefamous:MrWatson-comehere-Iwanttos