Out-of-order switch 乱序开关

[cup113]

出于部分用户可能对于记忆材料灵活性的需要，并且避免出现顺序材料中“下一个答案的输入是上一个答案的输出”这种情况（即产生不合理的思维惯性），应当在设置中加上“乱序开关”，以考虑是否需要打乱顺序。目前来看，即使打开，也会保留id机制，因为它对记忆的影响应该不大。
Since some users may need more flexible memory materials, and to prevent the problems of sequential materials (the input of next answer becomes the output of last question, and generates some unreasonable inertia confines), we should do something. One of the ideas is to add “out-of-order switch” in the settings in order to judge if the order of the questions should be messed up. For the moment, even if we opened the switch, the id system of questions will still retain because it has little influence on memorizing.