2869
0
23
1040
0
23
1458
0
23
3361
0
22
1482
0
22
838
0
22
1126
0
22
3418
0
22
610
0
22
1167
0
21
1850
0
21
1271
0
21
2403
1
21
1695
0
21
638
0
21
1190
0
21
1084
0
21
1854
0
21
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Keyword(s): 数学b