556
0
21
656
0
21
1430
0
21
1412
0
21
1063
3
21
1017
3
21
2117
0
21
815
0
21
933
0
21
5017
0
21
784
0
21
1068
2
21
530
0
21
2102
0
21
608
0
20
580
0
20
896
0
20
451
0
20
932
0
20
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Keyword(s): 数学ii