[al:新概念英语（二）] [ar:MP3 同步字幕版（美音）] [ti:SOS] [by:更多学习内容，请到查字典英语网yingyu.chazidian.com搜索“新概念”] [00:10.24]How did the woman get help? [00:14.45]When a light passenger plane flew off course some time ago, [00:19.68]it crashed in the mountains and its pilot was killed. [00:25.25]The only passengers, a young woman and her two baby daughters, were unhurt. [00:33.51]It was the middle of winter. [00:36.08]Snow lay thick on the ground. [00:39.77]The woman knew that the nearest village was miles away. [00:45.05]When it grew dark, she turned a suitcase into a bed and put the children inside it, [00:53.20]covering them with all the clothes she could find. [00:57.93]During the night, it got terribly cold. [01:02.47]The woman kept as near as she could to the children and even tried to get into the case herself, but it was too small. [01:14.04]Early next morning, [01:15.79]she heard planes passing overhead and wondered how she could send a signal. [01:22.70]Then she had an idea. She stamped out the letters 'SOS' in the snow. [01:31.98]Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. [01:40.47]It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash.