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最佳答案:Many poor families cannot afford their children to go to school
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最佳答案:With the help of the Hope Project, tens of thousands of children from poor famil
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最佳答案:解题思路:(1)应先算出总支出,然后代入公式计算,看属于哪个类别.(2)可得到饮食开支=恩格尔系数×总支出,那么0.3×总支出≤800≤0.39×总支出,应尽量