10、---- I’m terribly sorry that I missed your birthday I just completely forgot.

  ---- Oh, ________.

   A. Take it easy   B. No problem    C. Don’t mention it     D. That’s right

6、Each time a city building goes up, the grass in that spot and trees that once reached up to the sky are replaced by a swath of asphalt (沥青) roof.

Add to that the building of roads, parking lots, and yet more buildings, and the total 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, an asphalt roof can feel like the inside of an oven. 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 meadow 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, reduce power-plant emissions (散发), and improve air quality and public health. 

But that's not all -- green roofs are a great way to deal with water management in urban areas with mixed sewerage(排污) systems because they soak up extra precipitation(沉淀物). They are also a good way to provide shelters for urban wildlife, and actually extend the life span of the roof itself. And green roofs do something else: They can beautify the city -- whether you're on the 3rd floor or the 30th. So that will be a great achievement.

The environmental nonprofit group Earth Pledge is starting a Green Roofs Initiative. To learn more about how to create a green roof -- and the benefits(好处) it will provide -- visit its website at EarthPledge.com.

72. Which of the following statements best summarizes the main idea of the passage?

A. The benefits of growing a garden in the sky

B. The steps of creating green roofs in the city

C. A Green Roofs Initiative started by EarthPledge.com

D. The ways of preventing pollution and beautifying the city

73. The benefits green roofs bring to the city don’t include_______ according to the passage.

    A. reducing the building's energy costs

    B. replacing air conditioners to control temperature

    C. providing sanctuaries for urban wildlife

    D. improving air quality and public health

74. To grow a garden roof in the sky is largely because _________

    A. the global temperature is becoming hotter than before

    B. more buildings take up too much land green space,

    C. more green vegetables are planted to improve people’s life .

    D. tar roofs can cost us more money and pollute the air.

75. It can be inferred from the passage that________.

    A. garden roofs has completely replaced tar roofs in the city

    B. building green roofs needs much efforts and money

    C. the idea of growing garden roofs hasn’t been fully carried out

    D. green roofs have good points and bad points

 0  17689  17697  17703  17707  17713  17715  17719  17725  17727  17733  17739  17743  17745  17749  17755  17757  17763  17767  17769  17773  17775  17779  17781  17783  17784  17785  17787  17788  17789  17791  17793  17797  17799  17803  17805  17809  17815  17817  17823  17827  17829  17833  17839  17845  17847  17853  17857  17859  17865  17869  17875  17883  97155 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网