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六级练习2014.08.25


       
       



For the past few weeks,we have been discussing national energy conservation alternatives for the future.Today I’m going to talk about what one community’s presently doing to conserve energy.The people of Davis,California have succeeded in cutting their energy consumption by 1/3 since 1973.(1)_______________________.All new houses in Davis must have the proper insulation so that heat will not escape unnecessarily during the winter.New houses must also face north or south,so that they will not be overheated by the sun in summer.The law has had a definitely effect.(2)_______________________.There are other energy saving features about Davis.Buses, partially supported by the city,universally transport students throughout the area.There are 24 miles of bicycles paths,and today there are twice as many bicycles as cars in the city.By reducing the available parking space,the city council has succeeded in reducing the number of cars in the city every day.Another benefit of the reduced parking is the greater number of small cars.(3)_______________________.Davis, California has become an energy saving model for other cities.Time is up for today.Next week, we’ll return to our regular topic of national energy alternatives.



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the first energy saving action that was taken in the early 70's, was the legislation of streets and building codes.
since 1976,there has been 15% saving in the mount of natural gas and electricity used in heating and air conditioning.
people are saving gas becase they are choosing not to drive or because they are driving fuel economic cars.

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the first energy-saving action that we've taken in the early 70s was the legislation on streets and building coats
since 1976, there has been a 50% saving in the amount of natural gas and electricity used in the heating and air conditioning
people are saving gas because they are choosing not to drive or because they are driving fuel economic cars

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