Group 1 - The article emphasizes the importance of safety during the flood season, particularly in outdoor activities and construction work, highlighting the need for awareness and preparedness [1] - It outlines the classification of meteorological disaster warning signals into four levels: blue, yellow, orange, and red, each requiring different levels of preparedness and response [2] - The article provides guidelines for quick escape and risk avoidance, including immediate evacuation from danger zones and seeking higher ground [3] Group 2 - Recommendations for safety measures when using transportation during adverse weather include avoiding travel in severe conditions and ensuring the legality and safety of watercraft [4] - It advises on preparations for typhoons, such as monitoring weather updates, securing vessels, and reinforcing temporary structures [5] - The article discusses the importance of identifying hazards and conducting regular emergency drills to ensure community readiness [6] Group 3 - For mountain activities, it suggests observing environmental conditions for potential hazards and following evacuation orders promptly [7] - In urban flooding situations, it advises against unnecessary outings, emphasizes electrical safety, and recommends immediate evacuation if trapped in a vehicle [8] - It highlights the need for individuals to recognize their swimming abilities and the risks associated with natural water bodies [9] Group 4 - The article provides tips for heat prevention, including avoiding outdoor activities during peak heat hours and ensuring proper ventilation indoors [10]

新华财经达喀尔5月3日电 随着西非雨季临近，塞内加尔正加紧部署防汛工作。塞内加尔国家卫生办公 室日前在首都达喀尔及全国多地启动雨季前清淤排涝专项行动，调动大批人力和重型设备，联合社区力 量清理排水渠道，力求将城市内涝风险降至最低。 首都达喀尔是塞内加尔人口最密集的地区，也是雨季期间洪涝风险最高的地区之一。根据气象资料，达 喀尔的雨季通常自6月下旬开始持续至10月底，洪水威胁往往从7月初持续至10月中旬。 为提升应对洪涝灾害的能力，塞内加尔自2012年起实施"国家防洪管理规划"，在达喀尔等地修建雨水排 放基础设施，减轻了多地的洪涝灾情。 塞内加尔居民联合会数据采集负责人阿斯图·姆本格呼吁政府将城市排水系统建设作为优先任务，加快 完善污水与雨水排放网络。姆本格还建议政府鼓励社区居民参与项目设计、建设与维护各阶段，推动形 成长效机制。 （文章来源：新华社） 在达喀尔市郊盖贾瓦伊区，工人们手持铁锹等工具，配合吸污车和挖掘机，在积水易发地段开展疏通作 业，他们清理排水沟里的垃圾和淤泥，确保排水通畅。 "我们组织了技术人员和大型机械，配备抽水车等设备，全力清理堵塞的排水管道、蓄水池和涵洞。"现 场指挥作业的国家卫生办公室 ...