Today, in our environmental science lecture, we'll 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 often high, and maintenance requires regular watering, especially in dry seasons. A study in Chicago found that community gardens also improve local air quality, but they need at least two years to show measurable effects. So, while the benefits are clear, planning and investment are crucial.
❓ Según la conferencia, ¿cuál es un beneficio importante de los jardines en las azoteas?
A. A. Reducen el uso de energía al proporcionar aislamiento.
B. B. Requieren muy poca agua después de su instalación.
C. C. Mejoran inmediatamente la calidad del aire local.
D. D. Son económicos de instalar inicialmente.
✅ 正确答案
A. They reduce energy use by providing insulation.