互动封闭仿真课堂
1、智能交互 2、电子板书式视频教学 3、在线互动问答 4、封闭课堂启发式教学方式
随堂测试、知识梳理、易错点揭示、总结启迪智能错题本
听课中的错题能自动加入错题本,课后可方便复习及导出错题本升级服务
在线答疑、课后同类题练习、讲义下载、短信提醒Blues was originally Black Country music, which also came from the Southern States of last century. It is slow, usually sad music, which is often sung by one person with a guitar.
Rhythm and blues developed from the Blues in America in the 1940s. It became faster and more complex and used more instruments, e.g. saxophone, guitar, piano, drums. The music was often about city life and white musicians started playing it as well.
Musicians in the 1950s developed Rock from Rhythm and Blues and it became popular with young people. It spread to Europe in the 1960s and is now known in most countries. A lot of pop music comes from Rock and Roll.