( )是将教学目标逐级细分成彼此相联的各种子目标的过程。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31704' and id < 2537870 and id<>'2537870' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31704' and id > 2537870 and id<>'2537870' order by id asc limit 5