关于酶与底物的关系，正确的是（    ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27523' and id < 2271020 and id<>'2271020' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27523' and id > 2271020 and id<>'2271020' order by id asc limit 5