光学显微镜的镜片是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29899' and id < 2424997 and id<>'2424997' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29899' and id > 2424997 and id<>'2424997' order by id asc limit 5