题目

阅读理解 I first began experiencing anxiety and depression at the ageof 14, after being bullied (欺凌) at school for years. While at first anxiety and depressionwould come and go, it eventually became a constant part of my life. I was so eager to find the solution to overcoming my anxietyand depression that I tried everything from when I was in college to graduateschool: mood-changing medication, special teas, yoga, anything I read about inbooks, and advice given by doctors. Despite this, I still felt I hadn't evencome close to managing the problem. But one afternoon, my eyes fell upon a“打倒列强，除军阀。努力国民革命，齐奋斗”。这首歌诞生于下列哪一时期 A．辛亥革命                 B．北伐战争        C．抗日战争                 D．解放战争