2026-03-22 01:25 浏览次数 21
杀人的数量
B. The sea ice is melting earlier and forming later. C. The climate is changing due to people's activities. D. People killed too many polar bears.
文章最后一段讲述的是北极熊数量减少的原因,由于人类的活动引起气候变暖,因此使北冰洋的冰的面积减少,从而使北极熊的数量变少。