Today, in our environmental science lecture, we will discuss the impact of urban heat islands. A recent study in Melbourne found that planting more trees in city centers can reduce surface temperatures by up to 4 degrees Celsius during summer afternoons. However, the effect is less significant at night, when heat stored in buildings and roads is slowly released. The study also highlighted that green roofs, though more expensive to install, provide better insulation in winter than street trees. Interestingly, the researchers noted that light-colored pavements reflect more sunlight than dark ones, but they do not cool the air as effectively as trees do.
❓ 강의에 따르면, 멜버른에서의 연구는 가로수에 대해 무엇을 발견했습니까?
A. A) 그들은 여름 오후 동안 표면 온도를 최대 4도까지 낮춥니다.
B. B) 그들은 낮보다 밤에 공기를 식히는 데 더 효과적이다.
C. C) 그들은 녹색 지붕보다 겨울철 단열 효과가 더 좋다.
D. D) 그들은 밝은 색의 포장도로보다 더 많은 햇빛을 반사한다.
✅ 正确答案
A) They reduce surface temperatures by up to 4 degrees Celsius during summer afternoons.