S-腺苷甲硫氣酸(SAM)最重要的生理功能是（    ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='27519' and id < 2271257 and id<>'2271257' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27519' and id > 2271257 and id<>'2271257' order by id asc limit 5