语法与词汇 When snow (collects) on top of a building during the winter, the weight sometimes weakens the construction and occasionally causes the roof to collapse.
【正确答案】 D
【答案解析】accumulate“结果”。melt“融化”;scatter“分散,消散”;select“选择”。本题译文:冬天雪会凝结在屋顶上,其重量有时会破坏房屋,有时还会使屋顶坍塌。