Unit 6 Developing ideas What's really green 课件-2023-2024学年高中英语外研版（2019）必修第二册

What’sreallygreen?majority哪些才是真正的环保做法？Lookatthequestionsabout"greenliving"andtickyouranswersMostofusareawarethatwemusttakecareoftheenvironment,andthemajorityofustakestepstosaveenergyandreducewasteandpollution.Butrecently,some“greentruths”havebeenshowntobeonlyhalftrue,orevencompletelyfalse.Herearesomecommonones.Whicharereallygreen?我们大多数人都意识到要保护环境，也采取了各种行动节约能源，减少浪费和污染。但是近来，一些“绿色环保真相”被证实并非完全是正确的，甚至是无稽之谈。下面列举了一些常见的环保观念，其中哪些是真正的环保做法？Papershoppingbagsarebetterthanplasticones.纸质购物袋比塑料袋好？Plasticbagscauselitterandareadangertowildanimals,whichmistakethemforfood.Ittakeshundredsofyearsforplastictobreakdown,butmuchlesstimeforpaper.Becauseofthis,peoplethinkpaperbagsarethebetterenvironmentalchoice.塑料袋会变成垃圾，被野生动物误食后会对其造成伤害。塑料的分解需要数百年的时间，而纸的降解时间要短得多。因此人们认为纸袋是更为环保的选择。However,makingapaperbagusesfourtimesasmuchenergyasmakingaplasticbaganduptothreetimestheamountofwater.Theprocessalsoproducesmoregreenhousegases.然而，生产纸袋所消耗的能源是塑料袋的四倍，而耗水则多达三倍。其生产过程也会产生更多的温室气体。Infact,bothkindsofbagsarebadfortheenvironment.So,takeareusablebagwithyouwhenyougoshopping.事实上这两种袋子都不够环保，所以出门购物时请带上一个可重复使用的袋子。Whenyouturnoffadevice,itstopsusingpower.关掉的电器不耗电？Whenweturnoffadevice,suchastelevision,itgoesintostand-bymode.Devicesinthismodestillusepower,andolderdevicesinstand-bymodecanuseevenmore.This

happensbecauseelectricitycontinuestoleakfromthedevice,evenwhenitisturned“off”.Tomakesureyourapplianceisinfactoff,removetheplugfromitspowersupply.当我们关掉电视等电器时，它会进入待机状态。这种状态下的电器仍然耗电，而且越旧的电器耗电越多。这是因为电器即使已经被“关掉”了，却依然有电流从电器中流失。为确保电器设备彻底关闭，请从电源上拔下电器插头。Eatinglocalfoodisgoodfortheenvironment.吃本地食物更有利于环保？Itseemslikecommonsense:eatinglocalfoodshouldbebetterfortheenvironment,becauseitdoesnotneedtobetransportedlongdistancesandkeptcoldduringtransport.Unfortunately,itisnotthatsimple.这似乎是常识：吃本地产的食物更环保因为不需要长途低温运输。然而事实没有那么简单。Itistheproductionoffood,notitstransport,thatusesmostoftheenergyandproducesmostofthegreenhousegases.

Insomecases,localproducemighthaveusedmoreenergyandproducedmoregreenhousegasesthanproducegrownalongwayaway-eventakingintoaccountitstransport.相比于运输，食物的生产过程才是消耗大部分能源及生产大部分温室气体的原因。在有些情况下，即使将运输因素考虑在内，本地的农产品也可能比距离遥远的外地种植的农产品耗能更多，产生的温室气体也更多。It’sbettertotakeashowerthanabath.淋浴比泡澡更好？Itdependsonhowlongyouspendintheshowerandhowlargeyourbathis.Ifyouspendmorethaneightminutesinashower,you’lluseasmuchwaterasinabath-about50litresofwater.Therefore,thekeyistokeepyourshowertimeasshortaspossible.这取决于你淋浴的时间和你浴缸的大小。如果淋浴超过八分钟，那么耗水量就和泡澡一样多——大约为五十升水。所以，节水的关键在于尽量缩短淋浴的时间。Environmentalawarenessisnowpart