2021年12月英语四级听力:Crisis
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2021年12月英语四级听力:Crisis思维导图模板大纲
Crisis
Lifeisacontest!Whowillwin?Abluebirdandsparrowbothcompeteforspacetobuildtheirnests.Afast-growingmapletreeandslower-growingdogwoodcompeteforthesunlighttheybothneed.Oilcompeteswithcoalandnuclearpowerasanenergysourceforelectricpowerplants!
Thereisaproblem.Thereisalimitedamountofspaceforbirds,sunlightfortrees,andenergyforpeople!Ifwedonotcutbackonourusesofsomeofourresources,somedaytheywillbegone!
Howcanweuseenergytodayandknowwewillhaveenoughtogoaroundinthefuture?Wecanchoosealternate,orreplacement,energyresources.Ittakestheearthmillionsofyearstocreatecoal,oil,andgas.Theyarenonrenewableresources.
Solarenergy,windenergyandwaterenergyarerenewableresources.Ittakestheearthmillionsofyearstocreatecoal,oil,andgas.Theyarenonrenewableresources.
Solarenergy,windenergyandwaterenergyarerenewable.Whatotherwayscanweconserveoursources?Howcanwemakesurethereisalwaysenoughtogoaround?
Usefulwordsandexpressions:
1.bluebird蓝知更鸟
2.sparrow麻雀
3.dogwood山茱萸
4.powerplant发电厂,发电站
5.alternate替换物
6.nonrenewableresources不可再生资源
7.conserve保存,保藏