一只翅膀柔弱的小鸟能飞多远？一株贫瘠土地上的小苗能长多高？一副稚嫩的肩膀能挑起多重的担子？小小年纪的甘肃省少年李勇以实际行动回答了这些问题。李勇7岁时父亲中风瘫痪，为了减轻母亲的负担，李勇割草喂猪、烧炕，给父亲接屎接尿。为了凑足学费，李勇养了十几只兔子。19 How far can a weak bird fly? A barren land on the seedlings can grow much higher? A tender shoulder can provoke multiple burdens? Li Yong, a young boy from Gansu Province, answered these questions with his concrete actions. Li Yong 7-year-old father paralyzed his apoplectic stroke, in order to reduce the burden on the mother, Li Yong cut grass to feed pigs, burning kang, to the father then feces urine. In order to gather enough tuition, Li Yong raised a dozen rabbits. 19