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 UID471934 帖子1049 积分1547 学分7055 个 金币161 个 在线时间176 小时 
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| he notices a thousand times a day the difference between the languages he uses and languages those arround him used. but in school ,we never give a child a chance to find out his mistakes and correct them for himself.
 if it's a matter of right answer. as it may be in mathematics or science , give hem the answer book.
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