Today in our environmental science lecture, we're discussing 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 installing such a garden is high, often exceeding $50,000 for a medium-sized roof. Despite this, many cities offer tax incentives to offset these expenses. For example, in Chicago, building owners can receive a rebate of $5 per square foot of green roof. This has encouraged over 600 projects since 2005. But remember, maintenance requires regular watering and weeding, which adds ongoing costs.
❓ 关于屋顶花园的财务方面，讲师说了什么？
A. A. 它们的安装费用总是低于5万美元。
B. B. 税收激励措施有助于降低初始安装成本。
C. C. 维护费用通常由市政府承担。
D. D. 节能效果总是超过安装成本。
✅ 正确答案
B. Tax incentives can help reduce the initial installation cost.