Each time a city building is set up,the grass in that spot and trees that once reached up to the sky are replaced by a layer of asphalt or a tar roof(一层沥青或柏油房顶).The lost green space can have a very real effect on a city's air temperature,air quality,and energy costs.On a summer day in most American cities,a tar roof can feel like the inside of an oven(火炉).But what if we could replace the hot roof of each skyscraper or building in a city with grass or a garden?
Whether it holds vegetable gardens,wildflowers,or grasses,a green roof can lower the temperature above a building by 60 degrees,which can reduce the building's energy costs and,if used more widely,could decrease a city's total energy costs,and improve air quality and public health.
But that's not all—green roofs are a great way to handle water management in urban areas by taking in much rainfall,provide shelters for urban wildlife,and actually extend the life of the roof itself.And green roofs also do something else:they beautify the city-whether you're on the 3rd floor or the 30th.Now that's a brilliant achievement.
The non-profit group Earth Pledge is promoting a Green Roofs Program.To learn more about a green roof,just click here:EarthPledge.com.
1.What can you learn from the article?
A.Green roofs will take the place of all asphalt or tar ones.
【2017届高三英语一轮检测14 Unit 4 Astronomy:the science of the stars(人教版必修3)】相关文章:
★ 【浙江专用】2014届高考英语一轮复习课时作业(十四)必修3 Unit 4《Astronomy:the science of the stars》
★ (安徽专用)2014届高考英语一轮复习方案 作业手册(20)模块7 《Unit 20 New Frontiers》(含解析) 北师大版必修1
★ 四川省2016届高考英语一轮复习课时作业(35) Module 5 Cloning 外研版选修6
★ 2014届高考英语一轮复习课时作业(二十四)必修4Module 6《Unexplained Mysteries of the Natural World》(外研版)
★ 四川省2016届高考英语一轮复习课时作业(47) Module 5 The Conquest of the Universe 外研版选修8
★ 四川省2016届高考英语一轮复习课时作业(24) Module 6 Unexplained Mysteries of the Natural World 外研版必修4
★ 【北京专用】2014届高考英语一轮复习方案课时作业:必修3 Unit 4 Astronomy:the science of the stars
★ 北京市2014高考英语一轮复习 练习手册(22)必修5 Unit 2 The United Kingdom(含解析)新人教版
★ 2014年牛津译林版高中英语总复习(第1轮)同步练习 M9《Unit 1 Other countries, other cultures》
★ 2014年牛津译林版高中英语总复习(第1轮)同步练习 M3《Unit 3 Back to the past》Word版含解析
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21