高考3+1+2指的是什么

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select * from tbl_Articles WHERE ArticleID=446835 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=446835 LIMIT 0,1
select * from tbl_Articles_sphinx where id=446835 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(882972,405076,378763,888751,1547886,1009985,1712759,858620,1627885,1794514,1322965,1055751,520617,518164,81597,3486169,789915,1330504,775849,2583898,481868,2274518,2577332,1085403,3498478,3323797,870736,1144104,775505,3467392) ORDER BY field (ArticleID,882972,405076,378763,888751,1547886,1009985,1712759,858620,1627885,1794514,1322965,1055751,520617,518164,81597,3486169,789915,1330504,775849,2583898,481868,2274518,2577332,1085403,3498478,3323797,870736,1144104,775505,3467392)