幼儿教师恰当地解答幼儿的各种问题。这体现了幼儿教师劳动具有（ )的特点。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27094' and id < 2246850 and id<>'2246850' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27094' and id > 2246850 and id<>'2246850' order by id asc limit 5