211
0
5
214
0
5
489
9
5
158
0
5
278
5
5
231
0
5
205
0
5
317
0
4
229
0
4
138
0
4
198
0
4
143
0
4
260
0
4
144
2
4
295
0
4
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Keyword(s): 中2数学