Good morning, everyone. Today we'll continue our discussion on climate change impacts. As we know, rising temperatures affect agriculture. However, a less obvious effect is on infrastructure. For example, in northern Canada, melting permafrost is causing roads and buildings to sink. This creates costly repairs and safety risks. Additionally, warmer winters reduce the ice road season, which is crucial for transporting supplies to remote communities. So, while we often focus on food security, we must not overlook these engineering challenges.
❓ 讲座中提到气候变化的主要额外影响是什么?
A. A. 北部地区粮食产量下降
B. B. 永久冻土融化对基础设施造成的损害
C. C. 冬季建筑物供暖成本增加
D. D. 建筑工作的夏季施工期缩短
✅ 正确答案
B. Damage to infrastructure due to melting permafrost