A light passenger plane flew off course, it crashed in the mountains,the pilot was killed.Only survivor were three people.They were a young woman and her two daughter.They spend a long night.It was middle of winter.Snow lay thick on the ground.It grew dark,the woman turned a suitcase into a bed and put her daughter inside it,then she found all the clothes and covered them.In the night,it terribly cold,she kept as near as she could to the children and even tried to get into the suitcase herself.Next morning,she heard planes passing overhead and wondered how she could send a signal.She thought a good idea.She stamped out three letters"SOS" in the snow.Fortunately,a pilot saw the signal and sent a message by radio to the nearest town.It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash.In the end, they saved.O(∩_∩)O~