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Feishayan helps to prevent water running out of the water channel.
Feishayan helps to prevent water running out of the water channel.
A.正确
B.错误
正确答案：错误
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英语话农史华夏篇
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The Grand Canal has been listed as World Heritage by UNESCO in 2014.
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When Li Bing built Yuzui Isle， he used Zhulong and Macha， a highly effective yet low-cost method， to prevent dirt and stones being washed away by fast running water.