地黄饮子的功用是(  )。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25833' and id < 2169916 and id<>'2169916' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25833' and id > 2169916 and id<>'2169916' order by id asc limit 5