江老师使用Word编写完成了课程教案，需根据该教案创建PowerPoint课件，最优的操作方法是（

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28848' and id < 2351461 and id<>'2351461' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28848' and id > 2351461 and id<>'2351461' order by id asc limit 5