。
问题： 叶酸什么时候吃最好？答案：饭后半小时。
该答案所持的观点为？选项：否定、肯定、不确定。
肯定 ,2022-11-0409:02:14.0,2022-10-2417:02:10.0,2022-10-1218:02:02.0,2022-12-1315:02:31.0,2022-11-2410:13:10.0,2022-11-0715:28:11.0,2022-10-2814:22:24.0,2022-10-2117:17:32.0,2022-09-0315:17:03.0,2022-09-0115:09:22.0,2022-08-2833:24:02.0,2022-08-2633:12:11.0,2022-07-2732:08:46.0,2022-06-0315:41:50.0,2022-06-0128:41:47.0,2022-05-3014:44:24.0,2022-04-1911:35:10.0,2022-03-1406:11:34.0,2022-12-2225:07:54.0,2022-11-1523:48:21.0,2022-11-1423:51:31.0,2022-11-1033:53:52.0,2022-10-2913:43:01.0,2022-10-2417:01:41.0,2022-09-3014:14:07.0,2022-07-2221:04:18.0,2022-06-1922:20:15.0,2022-05-1411:04:22.0,2022-05-2913:38:32.0,2022-05-1818:23:02.0,2022-04-2823:05:54.0,2022-04-2626:09:36.0,2022-04-2223:37:11.0,2022-04-1915:17:16.0,2022-04-1922:22:17.0,2022-04-1921:59:31.0,2022-03-0215:30:11.0,2022-03-1716:04:10.0,2022-03-0515:38:56.0,2022-03-0316:44:02.0,2014-12-1211:33:12.0,2014-12-1112:35:16.0,2014-12-0609:21:13.0,2014-12-0218:43:40.0,2014-12-0510:57:36.0,2014-12-0317:21:17.0,2014-12-0117:39:47.0,2014-12-01709:15:39.0