人教课标高二必修5 Unit1,ListeningonPage41Unit1Greatscientists,RobertBriggsisveryinterestedinbiologyandespeciallyinthestudyofplants.TodayheistellinghisfriendZhangWeisomeexcitingnews.Beforeyoulistentothetapediscusswithyourpartnerhowyouwouldfindoutthenameofaflower.,Newwordsinthelisteningpassage:species种类parrot鹦鹉blackbird乌鸦,Nowlistentothetape.1.Whichofthefollowingstatementsdescribeswhatthislisteningpassageisabout?Giveyourreasons.,A.Thisisaboutamanwhowantstonameaflower.B.Thisisaboutamanwhofindsaflowerandwantstoownit.C.Thisisaboutamanwhofindsaflowerandwantstoknowifitisanewspeciesofflower.Itdoesnotgiveenoughinformation.Bisinaccurate.,Listentothetapeagainandcompletethefollowingpassage.Tofindthenameofanunknownflowerfirstyoushouldaskyour_______teachertohelpyou.He/Shewilllookinaspecial_____writtenbyCarlLinnaeus.Helivedin_______from____to_____.biologybookSweden17071778,Hewasveryimportantbecausehesolveda_______problemforbiology.seriousListentothetapeforthethirdtimeandanswerthesequestions.,1.IfRobertBriggsfindstheflowerinthebook,whatdoesthatmean?Itmeansthathisflowerhasalreadybeenidentifiedandhasaname.2.Howwouldheknowifhislilyisanewspecies?Hewouldknowbycheckinghislilyagainstotherliliesinthespecialistbook.Ifhislilyisdifferentitwillbeanewspecies.,3.Whydoplantsallhavetwonames?Allplantshavetwonamesjustlikepeople.Thefirstisthegroupofflowerstheybelongtoandislikethefamilyname.Thesecondisthekindofflowerwithinthatgroupandislikeagiven/personalname.,4.WhatwastheseriousproblemforbiologythatLinnaeussolved?BeforeLinnaeustherewasnowayoffindingoutwhetheraplantwasnewornot.Thiscausedproblemsbecausedifferentscientistsclaimedthattheyhadfoundandnamedflowersfirst.Afterheorganizedhissystemitwaseasytodiscoverwhetheraplantwasnewornotandsowhohadtherighttonameit.,ListeningTaskonPage44,Makealistofallthegreatmathematiciansthatyouknowoforhavelearnedabout.Whatdoyouknowoftheirachievements?Discussion,LeonhardEuler(1707-1783)NationalitySwissFieldsMathematicianandPhysicist,pure(纯的)symbol(符号)Л(圆周率)sine(正弦)cosine(余弦)topology(拓扑学)angle(角)diagram(图表)Readthewordsbelowandlearntopronouncethemcorrectly.,pure(纯的)symbol(符号)Л(圆周率)sine(正弦)cosine(余弦)topology(拓扑学)angle(角)diagram(图表)ListentoPart1andtickthewordsbelowthatEulerintroducedintomathematics.,Euler’snewbranchofmathematicsWhyEuleerisconsideredtobeagreatmathema-ticianListentoPart2andfillinthechartbelow.topologyintroducedmanynewsymbolsintomathswrotemorebooksthananyonebeforeorsincediscoveredanewbranchofmathematics,WhatwastheproblemofthecityofKonigsberg?Ithadariverrunningthroughit.ThecentreofKonigsbergisanislandandasitpassestheislandtheriverbreaksintotwoparts.Sevenbridgeswerebuiltsothatthepeopleofthecitycouldgetfromoneparttoanother.Thepeoplewonderedifyoucouldwalkaroundthecitysothatyouwouldcrosseachbridgeonlyonce.,
