1425
6
61
1827
5
61
1016
0
61
1637
6
61
1206
0
61
1252
15
61
5427
1
61
1725
10
60
3551
0
60
884
0
60
1163
2
60
5210
3
59
1499
0
59
2188
0
59
1560
8
58
1960
0
58
3211
0
57
1864
6
57
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Keyword(s): 数学 中2