围绕本课标题 Not very musical 并非很懂音乐（旧德里的耍蛇表演）主题，AI 老师会出 若干个简单问题，
每个问题听完后，用 完整句子口头作答。
⚠️ 尽量说完整句子，不要只说一个词；优先用本课句型与词语：As we had had a long walk / one of the markets of Old Delhi / a snake charmer / picked up a long pipe / covered with coins / play a tune / our first glimpse of the snake / follow the movements of the pipe / suddenly began to play jazz / however / could not tell the difference between Indian music and jazz