Today in our environmental science lecture, we'll discuss the impact of urban green spaces. Recent studies show that parks and community gardens can reduce local temperatures by up to 5 degrees Celsius during heatwaves. However, the key factor is not just the size of the green area, but its distribution. Small, scattered green spaces are more effective than one large park because they provide cooling benefits to more residents. Additionally, trees with broad leaves offer better shade than those with narrow leaves. The lecturer emphasizes that city planners should prioritize planting along streets and near buildings, rather than only creating large central parks.
❓ According to the lecture, what makes urban green spaces most effective for reducing temperatures?
A. A. Having one large central park
B. B. Distributing small green spaces throughout the city
C. C. Planting trees with narrow leaves
D. D. Focusing on green spaces outside residential areas
✅ 正确答案
B. Distributing small green spaces throughout the city