组装AI问题消息.

CourseVideListApi 对应课程的视屏列表.

ExamDetailApi 获取考试信息.

WorkedDetail 获取最后作业得分接口 {"_code":9,"status":false,"msg":"您已完成作业，该作业仅可答题1次","result":{}}.

GetExamTopicApi 获取所有考试题目，但是HTML，建议配合TurnExamTopic函数使用将题目html转成结构体.

GetWorkApi 获取所有作业题目.

KeepAliveApi 登录心跳保活.

StartExam 开始考试接口 {"_code":9,"status":false,"msg":"考试测试时间还未开始","result":{}}.

StartWork 开始做作业接口 {"_code":9,"status":false,"msg":"您已完成作业，该作业仅可答题1次","result":{}}.

SubmitExamApi 提交考试答案接口.

SubmitStudyTimeApi 提交学时.

SubmitWorkApi 提交作业答案接口.

题目转换.

VideStudyTimeApi 获取单个视屏的学习进度.

VideWatchRecodeApi 获取指定课程视屏观看记录.

WorkDetailApi 获取作业信息.

WorkedDetail 获取最后作业得分接口 {"_code":9,"status":false,"msg":"您已完成作业，该作业仅可答题1次","result":{}}.

TopicSelect represents a possible answer choice.

ExamTopic represents a single exam question.

ExamTopics holds a map of ExamTopic indexed by answerId.