public bool Update5(int id, reading question)
        {
            reading tmp = db.reading.Where(p => p.ID == id).FirstOrDefault();

            if (tmp != null)
            {
                // 修改
                tmp.Content   = question.Content;
                tmp.QuestionA = question.QuestionA;
                tmp.QuestionB = question.QuestionB;
                tmp.QuestionC = question.QuestionC;
                tmp.Answer1   = question.Answer1;
                tmp.Answer2   = question.Answer2;
                tmp.Answer3   = question.Answer3;
                tmp.Score1    = question.Score1;
                tmp.Score2    = question.Score2;
                tmp.Score3    = question.Score3;
                db.SaveChanges();
                return(true);
            }
            else
            {
                return(false);
            }
        }
        public reading Add5(int id, reading question)
        {
            // 向试题表里增加试题
            question = db.reading.Add(question);
            include_question_between_bank_and_reading tmp = new include_question_between_bank_and_reading
            {
                BankID     = id,
                QuestionID = question.ID
            };

            // 向题库里增加试题
            db.include_question_between_bank_and_reading.Add(tmp);
            db.SaveChanges();
            return(question);
        }