Today in our environmental science lecture, we're discussing the impact of urban green spaces. A recent study in Melbourne found that adding more parks and trees in city centers can reduce local temperatures by up to 3 degrees Celsius during heatwaves. Interestingly, the effect was strongest not in large parks, but in small, shaded courtyards with water features. The study also showed that residents living within 200 meters of such green areas reported a 15% decrease in stress levels. However, the researchers noted that the cooling effect was limited to the immediate vicinity, and recommended integrating green corridors throughout the city rather than concentrating on a few large areas.
❓ What did the study in Melbourne reveal about urban green spaces?
A. A. Large parks had the greatest cooling effect on the city.
B. B. Small shaded courtyards with water features were most effective at reducing temperature.
C. C. Green spaces did not affect residents' stress levels.
D. D. The cooling effect spread across the entire city.
✅ 正确答案
B. Small shaded courtyards with water features were most effective at reducing temperature.