题目

Louis Armstrong had two famous nicknames（绰号）. Some people called him Bagamo. They said his mouth looked like a large bag. Musicians often called him Pops, as a sign of respect for his influence（影响）on the world of music. Born in 1901 in New Orleans, he grew up poor, but lived among great musicians. Jazz was invented in the city a few years before his birth. Armstrong often said, “Jazz and I grew up together. ” Armstrong showed a great talent for music when he was taught to play the cornet（短号）at a boy’s home. In his late teens, Armstrong began to live the life of a方程3x2-5x-2=0的两个根是（　　） A、1，23B、2，-13C、±1D、-2，-13