1425
6
61
1828
5
61
1017
0
61
1640
6
61
1206
0
61
1254
15
61
5438
1
61
1729
10
60
3553
0
60
891
0
60
1163
2
60
5214
3
59
1504
0
59
2189
0
59
1563
8
58
1962
0
58
3212
0
57
1870
6
57
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Keyword(s): 数学 中2