Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
求解，光看不行，想自己动手重复一次，找不到素材。。在QQ群文件看了，没有初级课的素材
