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时间:2019-01-22
《辽宁省葫芦岛市第一高级中学2017-2018学年高二下学期拓展训练英语试---精校Word版》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、www.ks5u.com高二英语拓展卷阅读理解Electricitybillscanbehighlyexpensiveandthepowerweconsumecomesatanevengreatercosttotheenvironmentwhenyouconsiderthatover85%oftheelectricityproducedintheUnitedStatescomesfromfuels.Whetheryou’reconcernedaboutcleaninguptheenvironmentoryous
2、implywanttoreduceyourelectricitybill,residentialwindpowergenerators(发电机)couldbeasolution.Producingwindpowerathomewillnotworkforeveryone.Ifyouliveinanover-populatedresidentialarea,theremaybecertainlawsandzoningrequirementsthatprohibittheuseofwindmills(风车).Ify
3、ouliveon1acreoflandormore,youprobablywon’thaveanyissuesbutyoushouldinvestigatecarefullytomakesurethatwindpowergeneratorsarebothlegalandpracticalwhereyoulive.Eveniftherearenolawsorregulationsprohibitingwindpowergeneratorsyoustillneedtobeinalocationthatgetseno
4、ughwindonaregularbasis.Someproducersofwindgeneratorsrecommendthatyouliveinanareawithwindspeedsthataverageatleast10mph.Newermodelshavebeendevelopedrecentlythatcanoperatewithwindspeedsaslowas4mphbutmaximumefficiencyisachievedathigherwindspeeds.Beforeyoufixawin
5、dpoweredsystem,youwillhavetodetermineyourpowerrequirements.Willyoubeusingittochargeasmallbatteryforaboatorvehicleorwillyouneedenoughpowertorunyourentirehouseholdandbecompletelyoffthegrid(电网)?Onceyouknowwhatyourpowerrequirementsare,youcanstartshoppingaroundfo
6、rasystemthatcanmeetthoseneeds.Windpowergeneratorsareagreatsolutionforalotofpeople.They’reanidealsolutionforremotelocationswhereitwouldbeimpracticalorsimplytooexpensivetotapintothegrid.Theyarequietandtotallyclean,producingnopollution.Theyrequirenofuelandveryl
7、ittlemaintenance.Residentialwindpoweroffersalotofbenefitsbutit’snotforeveryone.You’llhavetohavesomemoneyupfronttopayforthesystemandequipment;however,youcouldsavequiteabitofmoneyifyou’reabletodomuchoftheworkyourself.You’llalsoneedtoliveinanareathatgets-6-enou
8、ghwindtomaketheequipmentworthwhile.You’llneedtodoyourhomeworkbeforeyoumakeapurchase,butwindpowergeneratorscouldbeagreatsolutionforproducingclean,low-costenergy.1.Whatisthemainideaofthefirstparag
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