单选题 By mid-night ______ workers said they had found all those injured in the boat accident.
【正确答案】 A
【答案解析】(rescue营救，抢救)。句意为：到午夜时分，救援人员说，他们已找到这次行船事故中的所有伤员。B．salvage打捞；C．safety安全；D．relief救济。