631
0
31
1574
0
31
1168
2
31
925
0
31
1624
5
31
898
3
31
1210
0
31
670
6
30
1314
8
30
1604
1
30
972
2
30
2350
4
30
1092
1
30
502
4
30
747
0
30
653
0
30
648
3
30
986
2
30
951
2
30
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Keyword(s): 中2 数学