Today, in our environmental science lecture, we'll discuss the impact of urban farming. While rooftop gardens are popular, a recent study highlights that community plots on vacant land can significantly reduce local food miles. Professor Hayes noted that these plots also improve soil quality and provide habitats for pollinators. However, the key finding was about water usage: contrary to expectations, urban farms often use less water per kilogram of produce than conventional farms, due to efficient drip irrigation and rainwater harvesting. This makes them a viable solution for sustainable cities.
❓ 最近关于城市农业的研究有哪些关键发现？
A. A. 屋顶花园是最高效的城市农场类型。
B. B. 城市农场每生产一公斤农产品所消耗的水量少于传统农场。
C. C. 闲置土地上的社区菜园对当地食物里程没有影响。
D. D. 城市农业显著增加了水资源消耗。
✅ 正确答案
B. Urban farms use less water per kilogram of produce than conventional farms.