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Unit3viewing CrazyBridge forAnimals【学习主题】Theme ViewingWorkshop新授课…视听课【课时安排】Time ArrangementI period【学习目标】Learning Objectives
1.To viewand talkabout howhuman activitiescan affectanimals behaviour
2.To viewfor understanding
3.To summarizeinformation
4.To expressinnovative ideasthat mayhelp animalscross humanbarriers【学习重难点】key Pointsdifficult pointsTograsp somespecific informationwhile watching【学习过程】Learning process§课前预习,发现问题Previewing andRecording QuestionsDoyou knowthe followingwords andphrases afterthe preview
1.fiatten
2.confront
3.infrastructure
4.obstacle___________
5.steer clear______________
6.ultraviolet____________
7.stranded______________
8.dwindle________________
9.get rid of_______________
10.barbed wire
11.ingenuity__________
12.Salmon CannonI
3.high-tension powerline
14.hxfed________
15.get inones way
16.bridge_________
17.go a long way
18.tear down
19.stick around
2.psych sbout
21.underpass
22.pipeline___________
23.footbridge
25.become isolatedfrom答案lFlatten_2面对
3.基础设施4障碍
5.避开一6o紫外线
7.搁浅8减少
9.摆脱一铁丝网H.聪明才智12鲤鱼炮
13.高压电力线14有蹄的
15.妨碍某人16桥
17.走很远的路18拆掉
19.停留在20o吓到某人
21.地下通道
22.管道
23.人行桥24o明确的走廊
25.孤立于Homework:How canwe changeour activitiesin orderto reducethe influenceon animals*lives inourdaily lifeThink asmany solutionsas youcan andwrite themdown.This videois aboutcrazy bridgesfor animals.While reading,pay attentionto theunderlinedwords andphrases.Can youguess themeanings of themWhy didthe chickencross the road Wemay neverknow,since sheprobably nevergotto theother side.In heUS alone,about amillion animals are flattenedby passingmotoristseach dayand thatdoesnt evencount allthe bugs.Animals arcconstantlyconfronted withbarriers,some ofthem thatarc completelynatural,and othersthat webuildthat arebarely barriersat all.As webuild ourown infraslruclure,were alsoadding tothis obstaclecourse withoutmeaningto,and theseunintentional fencesare someofthemost effectiveanimal barriersoutthere.Roads arejust thebeginning.Take high-tension powerlines forexample.Theymay lookharmless tous,but manyother creaturessteer clear.We cantsay whyfor sure,but theseanimals ultravioletvision maymean thatthe UVHashes dischargingfrom thecablesmake fora veryscary sight.And evenweird stuffcan getan animalsway.Many hoofedanimalsarehesitant to cross linearfeatures likeclear-cut corridors,pipclincs-cvcn rowsof rocksor paintedlines onthe ground-leaving thempsychologicallystranded onone sideor theother.While onestranded cowmight notbe ahuge problem,ifenough animalsbecome isolatedfrom food,mates andprotection,entire populationscandwindle and even disappear.One solutionwould beto gelridofall theseobstacles,but weare likelyto giveuproads,powerorpipelines anytimesoon.Andevenwhenweremove physicalbarriers,theirstopping powercan stickaround.The“Iron Curtain,,between theCzech RepublicandGermany waslorn downmore than20years ago,but reddeer stillwont crosshat divide.Generations offawns learnedto avoidthe barbedwire fence,andevenwith itgone,thelessons liveon.Luckily,a littleingenuity goesalongway inguiding animalsover,under,or aroundtheobstacles weput intheir paths.Just asa footbridgehelps uscross dangerousroads,wecan buildoverpasses thathelp deer,monkeys andcrabs dothe same.Elephants gounderneath.And wcvceven engineeredseven cannonsto helpfish sailpast damson theirwayupriver.We canbridge mentalbarriers too,encouraging animalsto crossobstaclesthat couldotherwise psychihem out.In theend,even ifwe dontknow whythe chickenwantstocrosstheroad,at leastwe canhelp herget theresafely.。