747
4
31
1256
0
31
7393
0
31
2293
2
31
991
0
31
1178
1
31
925
4
30
978
2
30
1401
0
30
2233
2
30
1664
0
30
1350
1
30
1189
0
30
624
0
30
947
0
30
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Keyword(s): 中3 数学