小明家现在60m3水的使用时间和原来80m3水的使用时间相同，已知现在每月比原来每月节约用水2m3，设现在小明家每月用水量为xm3，根据题意，列方程得[]A．B．C．D．-九年级数学

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• 某商场用32000元购进一批运动服，上市后很快脱销，商场又用68000元购进第二批这种运动服，所购数量是第一批购进数量的2倍，但每套进价多了10元。①该商场两次共购进这种运动服-八年级数学
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