IELTS reading detail Practice
The study of the green roof on Chicago's City Hall concluded that...
Question type: multiple choice · Difficulty: advanced
- A. it had no measurable impact on the building's energy use.
- B. it successfully cooled the entire surrounding district.
- C. its main benefit was aesthetic rather than environmental.
- D. its impact was significant for the building but limited for the wider area.
Explanation Preview
Paragraph F states the roof resulted in 'measurable energy savings for the floors directly beneath it'. However, it also 'highlighted the localized nature of its direct cooling effect... reinforcing the understanding that while individual installations are beneficial for the building itself, a district-wide impact requires a critical mass'. This matches option D.