必修五unit1-Workbook

Unit1GreatscientistsWorkbook高二人教新课标版必修五AnswerkeyforExercise1:Possibleanswersinclude:GotoyourteacherGotoanaturalmuseumandspeaktoaspecialistLookitupinaflowerbookListening(Page41)AnswerkeyforExercise2:ThecorrectanswerisC.SummaryAisnotcorrectbecauseitdoesnotgiveenoughinformation.SummaryBisinaccurate.AnswerkeyforExercise3:Tofindthenameofanunknownflowerfirstyoushouldaskyour_________teachertohelpyou.He/Shewilllookinaspecial________writtenbyCarlLinnaeus.Helivedin________from_______to_______.Hewasveryimportantbecausehesolveda________problemforbiology.BiologybookSweden17071778seriousAnswerkeyforExercise4:1.Itmeansthathisflowerhasalreadybeenidentifiedandhasaname.2.Hewouldknowbycheckinghislilyagainstotherliliesinthespecialistbook.Ifhislilyisdifferent(forexampleinthenumberofpetalsorstamens)itwillbeanewspecies.3.Allplantshavetwonamesjustlikepeople.Thefirstisthegroupofflowerstheybelongtoandislikethefamilyname.Thesecondisthekindofflowerwithinthatgroupandislikeagiven/personalname.4.BeforeLinnaeistherewasnowayoffindingoutwhetheraplantwasnewornot.Thiscausedproblemsbecausedifferentscientistsclaimedthattheyhadfoundandnamedflowersfirst.Afterheorganizedhissystemitwaseasytodiscoverwhetheraplantwasnewornotandsowhohadtherighttonameit.NAMINGAFLOWERRobertBriggsistalkingtoZhangWeiaboutanewflowerhehasfound.ListeningtextZW:HelloRobert.What’sthatbookyou’recarrying?RB:Abookthathelpsyouidentifyaflower.ZW:Isee.Whydoyouwantthat?RB:Well,I’vefoundthislily.Itlooksdifferenttome.SoIwanttofindoutifit’snewornot.Ourbiologyteachertoldmethatifit’salreadyknown,I’dfinditinthisbook.ZW:Wow!Soyouthinkyoumayhavefoundanewlily?RB:Ihopeso,butIhavetodosomeresearchfirsttofindoutforsure.ZW:Whathappensifit’sinthebook?RB:Itmeansthatsomebodyelsehasfounditandnamedit.ThenI’llknowitsbiologicalname.ZW:Whatdoyoumeanbythebiologicalname?RB:Actuallylikeusaflowerhastwonames.Thefirstisthegroupofflowersitbelongsto-likeafamilyname.Aroseisonesuchgroup.Thesecondisthekindofflower-likeagivenname.Itmaydescribewhattheroselookslike;forexample,thecolorofanautumnsunset.Togetheryougettheflower’sname,whichisRoseAutumnSunset.ZW:Gosh!Whomadethatsystem?RB:AgreatscientistcalledCarlLinnaeus.HelilvedinSwedenfrom1707to1778.ZW:Solongago.RB:Yes,andhesolvedaveryseriousproblemforbiology.ZW:Whatwasthat?RB:Beforehimnobodycouldtellifaplantwasnew,astherewasnowayofchecking.There’resomanyplants,yousee!ZW:Yes,Iappreciatethat!Sohissystemisstillused?RB:Indeeditis.Ifmyflowerisn’tinthisbook,I’llknowthatI’vefoundanewkindoflily.ZW:That’sgreat!CanIcomeandhelpyou?Thisresearchsoundfun.RB:Yes,andifI’mlucky…(fadingout)ZW:Isee.Soifyourflowerisnewitwillbecalled“lily,Robert”willit?RB:Yes,itwill—ifI’mverylucky.ZW:Well,Ihopeyou’resuccessful.Goodbye.RB:Goodbye.TalkinginpairsHowwillIrecognizeyou?HowwillIknowyou?Whatwillyouwear?Whatspecialfeaturesdoyouhave?Whatdoyoulooklike?Youcanrecognizemebecause…I’mtall\short,fat\thin,young\oldwith…My…looksabitlike…Ihavelarge\small,brown\greeneyeswith…ListeningTask(Page44)analyse(分析),pure(纯的),foundations(基础),symbol(符号),Л(圆周率);sin(正弦),cosin(余弦),geometry(几何),calculus(微积分),mechanics(力学),practical(实用的),topology(拓扑学)AnswerkeyforExercise1:Studentswillgivetheirownanswerswhichmayvary.AnswerkeyforExercise3:Tickallsymbolsexceptangle.AnswerkeyforExercise4:Euler’snewbranchofmathematicsWhyEulerisconsideredtobeagreatmathematician1.introducedmanynewsymbolsintomaths2.wrotemorebooksthananyonebeforeorsince3.discoveredanewbranchofmathematicstopologySuggestanswerstoExercise5:Ithadariverrunningthroughit.Thecentreofkonigsbergisanislandandasitpassestheislandtheriverbreaksintotwoparts.Sevenbridgeswerebuiltsothatthepeopleofthecitycouldgetfromoneparttoanother.Thepeoplewonderedifyoucouldwalkaroundthecitysothatyouwouldcrosseachbridgeonlyonce.SuggestedanswerstoExercise6:ThereisnoEulerpathforthisfigure.LookatFigure4intheReadingtask.ItisaEulerpathforFigure3.AMATHEMATICIAN'SPROBLEMJohnSmithistalkingtoZhaoYangaboutamathematicianwhointerestshim.ListeningtextPart1JS:DidyouknowthatwehavebeenstudyingEuler'sworkinmaths?ZY:Whoishe?Ihaveneverheardofhim.JS:Well,hewasafamousmathematicianintheeighteenthcentury.Herevisedallthepuremathematicsthatwasknowninhisday.ZY:Thatprobablywasn'tverymuch.JS:You'rewrongthere.Hewrotemorethananyothermathematicianbeforeorsince.ZY:Really!Wellwhatdidhedo?JS:Heintroducedalotofsymbolsintomathematicssuchasthesymbolforpi(Л)andthetermssinandcosin.ZY:Wow!JS:Andhedidhalfofthisworkwhenhewasblind.ZY:Howdidhedothat?JS:Hetoldhisideastosomeoneelsewhowrotethemdown.Part2ZY:Whatwerehisachievements?JS:Heintroducedanewbranchofmathematicscalledtopology.Ithelpsyouunderstandthingsbyusingdiagrams.Thesubwaymapisagoodexample.Itdoesnottellyoudistancesbutitshowsyouhowstationsconnecttogether.ZY:Howdidhestarttopology?JS:Well,in1735hewasinspiredbyaprobleminthecityofKonigsbergwherehelived.Lookatthemapinyourbook.Konigsberghadariverrunningthroughit.Thecentreisanisland.Astheriverpassestheisland,itbreaksintotwoparts.Sevenbridgeswerebuiltovertheriver.Eulerwonderedifyoucouldwalkaroundthecitysothatyoucrosseachbridgeonlyonce.ZY:Letmetryth