3419
2
23
789
1
23
1172
3
23
1167
2
23
1048
2
23
723
4
23
397
0
23
272
0
23
843
0
23
490
2
23
721
0
23
512
0
23
798
0
23
479
0
23
999
3
23
704
0
23
360
0
23
1493
8
23
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Keyword(s): 数学 中2