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5. Green roofs save money through energy and resource conservation. Studies done in Germany, where an estimated 10 percent of all roofs today are green, suggest that green roofs last two to three times longer than conventional roofs. The long service life of a green roof means that fewer resources and less energy will be expended in roof replacement.
6. Green roofs also save money by lowering the cost of interior heating and cooling. One study found that an average building with a green roof requires 25 percent less cooling in warm weather and loses 26 percent less heat when the weather is cold. For example, a commercial facility in Germany with a green roof saved enough money in three years through lower heating and cooling costs to pay for the cost of installing the roof. The facility also saved money in equipment costs, since additional cooling towers had become unnecessary. As energy costs increase, the tenants of buildings with green roofs will undoubtedly reap additional savings.
1. According to paragraph 1, green roofs
A. are very heavy
B. thrive mostly in warm climates
C. are composed of several layers of material
D. can provide most food a city needs
2. Look at the four letters [A], [B], [C] and [D] that indicate where the following sentence could be added to the passage.
This miniature ecosystem can be built on top of an existing roof, often with structural modifications to accommodate the extra weight, or incorporated into the construction of a new building.
Where would the sentence best fit? Choose the letter where the sentence should be added to the passage.
A. letter [A]
B. letter [B]
C. letter [C]
D. letter [D]
X
No Answer
3. Which of the following best expresses the essential information in the highlighted sentence in paragraph 2?
A. They were meant to soak up rainwater in cities that had few natural plants that could catch water before it over-stressed the sewers.
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10/16/2023
