高二英语人教版必修5课件Unit1Listening

人教课标高二必修5Unit1RobertBriggsisveryinterestedinbiologyandespeciallyinthestudyofplants.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_____.biologybookSweden17071778Hewasveryimportantbecausehesolveda_______problemforbiology.seriousListentothetapeforthethirdtimeandanswerthesequestions.1.IfRobertBriggsfindstheflowerinthebook,whatdoesthatmean?Itmeansthathisflowerhasalreadybeenidentifiedandhasaname.2.Howwouldheknowifhislilyisanewspecies?Hewouldknowbycheckinghislilyagainstotherliliesinthespecialistbook.Ifhislilyisdifferentitwillbeanewspecies.3.Whydoplantsallhavetwonames?Allplantshavetwonamesjustlikepeople.Thefirstisthegroupofflowerstheybelongtoandislikethefamilyname.Thesecondisthekindofflowerwithinthatgroupandislikeagiven/personalname.4.WhatwastheseriousproblemforbiologythatLinnaeussolved?BeforeLinnaeustherewasnowayoffindingoutwhetheraplantwasnewornot.Thiscausedproblemsbecausedifferentscientistsclaimedthattheyhadfoundandnamedflowersfirst.Afterheorganizedhissystemitwaseasytodiscoverwhetheraplantwasnewornotandsowhohadtherighttonameit.Makealistofallthegreatmathematiciansthatyouknowoforhavelearnedabout.Whatdoyouknowoftheirachievements?LeonhardEuler(1707-1783)NationalitySwissFieldsMathematicianandPhysicistpure(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.topology•introducedmanynewsymbolsintomaths•wrotemorebooksthananyonebeforeorsince•discoveredanewbranchofmathematicsWhatwastheproblemofthecityofKonigsberg?Ithadariverrunningthroughit.ThecentreofKonigsbergisanislandandasitpassestheislandtheriverbreaksintotwoparts.Sevenbridgeswerebuiltsothatthepeopleofthecitycouldgetfromoneparttoanother.Thepeoplewonderedifyoucouldwalkaroundthecitysothatyouwouldcrosseachbridgeonlyonce.