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人教版二年级上册7的乘法口诀,人教版二年级上册7的乘法口诀,2,a,4a,3,a,5a,4,a,6a,5,a,7a,6,a,8a,7,a,9a,8,a,10a,9,a,11a,10,a,12a,11,a,13a,12,a,14a,13,a,15a,14,a,16a,15,a,17a,16,a,18a,17,a,19a,18,a,20a,感谢聆听,感谢聆听,
