A. They died in the collapsed houses. B. They died of an epidemic. C. They were carried away by the flood. D. They tried to walk in the floodwater. 参考答案:C 答案解析:根据题中的关键词three people可以在文章最后一段最后一句话找到相关介绍。其中所说的sucked into the floodwater作为原因状语,解释了three people lost
第22题: [单项选择]总补体及C3降低() A. 单纯性肾病 B. 肾炎性肾病 C. 紫癜性肾病 D. 肾小管性酸中毒 E. IgA肾病 参考答案:B 答案解析: