Today in our environmental science lecture, we will discuss the impact of urban farming. One key point is that rooftop gardens can reduce a building's energy consumption by up to 25% because they provide natural insulation. However, the initial cost of setting up such a garden is quite high, often exceeding $10,000 for a medium-sized roof. Despite this, many cities offer subsidies to encourage this practice. For example, in New York, a program covers 30% of the installation costs for community gardens. Additionally, these gardens help manage stormwater runoff, which can reduce pressure on city drainage systems during heavy rains.
❓ 講師が言及した屋上庭園の利点の一つは何ですか？
A. 建物のエネルギー使用量を約4分の1削減します。
B. 設置費用は5,000ドル未満です。
C. 都市の排水システムの必要性を排除します。
D. それらはニューヨークの全ての新築建物に義務付けられています。
✅ 正确答案
They reduce building energy use by about a quarter.