1215
3
17
494
0
17
677
0
17
1221
0
17
810
0
17
576
0
17
721
0
17
976
4
17
643
0
17
762
0
17
498
0
17
788
0
17
825
0
17
744
0
17
501
4
17
471
0
17
393
0
17
790
7
17
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Keyword(s): 中2 数学