辛德等人将课程实施的取向分为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30346' and id < 2452770 and id<>'2452770' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30346' and id > 2452770 and id<>'2452770' order by id asc limit 5