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  • 更新 2022-09-03
  • 科目 英语
  • 题型 完型填空
  • 难度 中等
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When we think of green buildings, we tend to think of new ones-the kind of modern, solar-paneled masterpieces that make the covers of architecture magazines.But the US has more than 100 million existing homes, and it would be incredibly          to tear them all down and          them with greener versions.
An enormous amount of energy and resources went into the construction of those houses.And it would take an average of 65 years for the          carbon emissions (排放) from a(an) __    _ energy-efficient (节能) home to make up for the          lost by destroying an old one.
So in the broadest sense, the greenest home is the one that has already been built.But at the same time,           half of US carbon emissions come from heating, cooling and powering our           , offices and other buildings."You can't deal with climate          without dealing with existing buildings," says Richard Moe, the president of the National Trust.
With some exceptions, the oldest homes tend to be the          energy-efficient.Houses built before 1939 use about 50% more energy per square foot than those built after 2000, mainly due to the tiny cracks and gaps that          over time and let in more outside         .
      ,there are a vast number of relatively simple changes that can green older homes, from        ones like Lincoln's Cottage to your own postwar home.And efficiency upgrades (升级) can save more than just the earth; they can help          property owners from rising power         .

A.terrible B.wasteful C.wonderful D.useful

A.put B.build C.replace D.take

A.reduced B.increased C.used D.destroyed

A.old B.fashionable C.new D.beautiful

A.magazines B.trees C.materials D.resources

A.nearly B.hardly C.rarely D.mostly

A.libraries B.schools C.homes D.stores

A.improvement B.appearance C.stability D.change

A.most B.really C.very D.least

A.expand B.narrow C.strengthen D.weaken

A.dust B.air C.smoke D.water

A.Oppositely B.Unfortunately C.Fortunately D.Frankly

A.historic B.worthless C.ordinary D.meaningless

A.charge B.protect C.punish D.warn

A.prices B.costs C.businesses D.bargains

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