INSERT INTO `exam_question` (qid,title,selectanswer,rightanswer,`type`,`explain`,score,paper,courseid) VALUES (15,'aaa',NULL,NULL,1,NULL,NULL,NULL,13);
INSERT INTO `exam_question` (qid,title,selectanswer,rightanswer,`type`,`explain`,score,paper,courseid) VALUES (15,'aaa',NULL,NULL,1,NULL,NULL,NULL,13);