IELTS reading inference Practice
為什麼需要高密度的屋頂綠化才能為一個區域降溫？主要原因是什麼？
Question type: multiple choice · Difficulty: advanced
- A. To increase the property values in the area.
- B. To achieve a cumulative level of evapotranspiration that can lower ambient air temperature.
- C. To meet the government-mandated percentage of green coverage.
- D. To create enough shade to block all direct sunlight from reaching street level.
Explanation Preview
Paragraph D explains that a high density is needed because 'the cumulative evapotranspiration from numerous roofs is sufficient to lower the ambient air temperature within the urban canyon.' The effect of a single roof is 'negligible' because the cool air is dispersed. The other options are not mentioned as the primary reason for needing high density for cooling.