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最佳答案:There are seven people in my family. They are my grandfather, grandmother, fathe
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最佳答案:There are seven people in my family.They are my grandfather,grandmother,father,m
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最佳答案:解题思路:(1)求出爷爷、奶奶、爸爸、妈妈的年收入之和就除以5就是小明家的人均收入.(2)与(1)求出的年均收入比较即可得知.(3)把奶奶的年收入看作单位“1”