787
0
17
505
0
17
669
3
17
974
0
17
206
0
17
466
0
17
829
0
17
790
7
17
585
0
17
366
3
17
1183
0
17
833
0
17
397
0
16
666
0
16
402
0
16
426
4
16
555
1
16
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Keyword(s): 数学 中1