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在拜读了贵刊2006年第5期杨淑霞老师的《蚂蚁爬行中的数学问题》一文后,我认为文中例1答案选(C)不正确,此题应选(B).
After reading the article “Mathematical Problems in Ant Crawling” by Teacher Yang Shuxia in the 5th issue of 2006, I believe that the answer (C) in Example 1 of the text is not correct. This question should be selected (B).