幼儿高兴了就笑，伤心了就哭。这说明其情绪具有（ )的特点。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27580' and id < 2273397 and id<>'2273397' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27580' and id > 2273397 and id<>'2273397' order by id asc limit 5