private QuestionResponse CreateQuestionResponse(string questionId)
{
QuestionResponse response;
Question question = this.FindQuestion(questionId);
if (question is MCQuestion ||
question is MRQuestion ||
question is MAQuestion ||
question is TableQuestion ||
question is TFQuestion)
{
response = new SelectableQuestionResponse(questionId);
}
else if (question is FIBQuestion)
{
response = new FIBQuestionResponse(questionId);
}
else if (question is ESQuestion)
{
response = new ESQuestionResponse(questionId);
}
else
{
response = new QuestionResponse(questionId);
}
return(response);
}
/// <summary>
/// 初始化Exercise类的新实例。
/// </summary>
public Exercise()
{
this.createTime = DateTime.Now.ToUniversalTime();
this.response = new ExerciseResponse(base.Id);
}