| 1. | Red books by a key , yellow books by the s key , blue book on the d button , according to a top - down order , and the press on january 1 corresponding to the color of the button , right , books will be an automatic add a corresponding book shelves 红色书籍按“ a ”键,黄色书籍按“ s ”键,蓝色书籍按“ d ”键,按照有上至下的顺序,一一按下与颜色相对应的按键,正确的话,书籍会一本一本自动放入到相应的书架中。 |