1800
5
53
1685
10
52
116931
0
52
1404
2
51
1780
5
51
910
1
51
2653
0
51
1712
19
51
1548
0
51
2607
5
50
1771
3
50
1864
9
50
2040
7
50
1264
3
50
1590
7
49
2339
0
49
1994
0
49
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Keyword(s): 数学 中3