题目

阅读理解World's loneliest marathonManyof us know about Russia's Lake Baikal from our textbooks, or by listening toChinese singer Li Jian's hit song, Lake Baikal. But over the past decade, theworld's deepest freshwater lake has been in the spotlight for an extreme sport.EachMarch since 2005, about 150 people from around the world sign up for the BaikalIce Marathon. They come to explore the lake's breathtaking beauty and challengethemselves in unpredictable conditions. The26-mile (41. 84-kilometers) journey starts on the lake's eastern shore. InMarch, the ice is a meter thick and iron-hard. 0