760
1
15
1165
4
15
409
4
15
423
0
15
494
0
15
792
0
15
713
0
15
874
0
15
394
0
15
523
2
15
506
0
15
430
0
15
405
0
15
590
0
15
815
0
15
520
0
15
388
0
15
412
0
15
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Keyword(s): 数学 中2