Yo-Yo Ma was certainly a gifted musician.In ___1___, he was ___2___↓At the age of ___3___, he was already known for his ___4___↓In ___5___, he gave a performance for US President.↓By the time he was ___6___, he ___7___ on TV.↓Through his ___8___, he performed with ___9___ orchestras.↓He took a ___10___ liberal arts education.↓In ___11___, he received a ___12___ degree.↓By the early ___13___, he had become ___14___ known. He also expressedhis ___15___ interest in musical education for children.[音频]