钙在小肠上通过主动转运和被动扩散被吸 收，下列选项利于钙吸收的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30847' and id < 2484336 and id<>'2484336' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30847' and id > 2484336 and id<>'2484336' order by id asc limit 5