IELTS reading detail Practice
根據文章，粗放式屋頂綠化最有可能具有以下哪一個特徵？
Question type: multiple choice · Difficulty: advanced
- A. Small trees and bushes
- B. A soil depth greater than 20 cm
- C. Drought-resistant plants like Sedum
- D. A complex irrigation system
Explanation Preview
Paragraph C describes extensive systems as being 'typically less than 20 cm deep' and supporting 'a limited palette of hardy, drought-tolerant plants like Sedum species.' The other options describe features of intensive roofs (small trees, deeper substrate) or are not necessarily characteristic of extensive roofs (complex irrigation).