数学课学习加减乘除运算法则。这类学习主要属于（ )。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='23630' and id < 2055948 and id<>'2055948' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='23630' and id > 2055948 and id<>'2055948' order by id asc limit 5