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house,"Hewitt warned.“How much energy you can save also depends on the kind of home you live in,”Hewittadded.“If you live in homes built with heavy matcrials like bricks that hold in cool air longer,itmakes sense to turnoff theACeven ifyou're stepping outfor just a fewhours.Hewittsuggestedthatsmart thermostatsare ahandytooltoremovethementalburden ofadjusting theACmultiple times a day.They can raise thetemperaturewhen no oneis home toconserveenergyand loweritwhenpeoplereturn.Gregor Henze,a professor at the University of Colorado Boulder,agreed,“According totheUSDepartment of Energy，adjustingour thermostatby 4-6°Cforeight hoursa day cansave up to10% a year on heating and cooling.Air conditoning for residential buildings in theUS accountsfor about 4-7%of the nation's total energy consumption.That's a lot."8.Whatcanbeinferredfrom thefirstparagraph?A.Air-conditioning costs rise rapidly in the US.B.AmericansareconcernedaboutACpollution.C.Peopleagree onhow touse theACefficientlyD.Expertshave simple solutions tosave energy.9.Why is it a bad idea to turnoff theACfrequentlyin summer inFlorida？A.It is extremelyhot in the state.B.The houses are built with bricks.C.Thewetairwill cause damage.D.Itwon'taffectenergyconsumptionA.Setthetemperature afewdegreeslower.B.Turn off theACif theyleavefor15minutes.C.Replace thebuildingmaterialswithbetter ones.D.LettheACrun atarelativelyhigher temperature.11.WhatmightbeGregorHenze's attitudetosmart thermostats?A.Skeptical.B.Approving.C.Critical.D. Unclear.DDirector Ken Burns is a great explainer, whose documentaries usually explore the story ofthestoryagainthroughthesoundtrackofcountrymusicinhisnewdocumentaryCountryMusic.You may thinkit would be a relatively easy project:Beyond the common wisdom thatHank Williams was country music's first great songwriter,there's alot the average citizendoesn'tknowabout theotherperformers.Soitwouldbegoodenoughtoincludeasmanyclips(片段）of theirperformances aspossible.Indeed,there are many such entertaining momentsinBurns'Country Music，including aclip in whichDollyParton explains how her1974hit I Will Alucays LoveYou was inspired byher break with Porter Wagoner,the singingpartner who launched her career.Burns'Country Music begins in the1920s,with pioneeringproducer RalphPeer recording1990s. (Burns seems to have thrown up his hands before entering the 2lst century. Perhaps hePretty soon, all the back-scratching becomes tiresome.There are also times when some of Burns'best ideas aren't well-presented.The film's secondhour has a promising section about the comedian Minnie Pearl,a woman too often ignored insurveys.Yet, after showing her as a college-educated humorist, the documentary. just givesher a bit of audio.I was really shocked.In general,Burns presents what used tobe called the"Great Man” theory of history: The biggest stars and the most obvious ideas are the onesconsidered mostworthy.【高三期中考试·英语试题第3页（共6页）】26-X-0810