311
2
9
166
0
9
238
1
9
241
0
9
344
0
9
231
0
8
235
0
8
210
0
8
171
0
8
258
2
8
331
0
8
325
0
7
279
0
7
214
2
7
170
0
7
138
2
7
349
0
7
188
0
7
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Keyword(s): 中2数学