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六年级（小升初）数学，求不规则阴影部分面积，容斥原理用着喷香
六年级数学下册66/96
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![妈妈突然离世 成了我心中永远的痛，体会到了生死离别，撕心裂肺的滋味，有太多的遗憾和亏欠，好像在做梦一样，意外来的太突然，让我们措手不及，余生再无娘，从此您长眠，孩长念只有在梦里，妈妈您一路走好，愿天堂再无病痛，愿妈妈在天堂一切安好！[合十][合十]](http://p26-sign.bdxiguaimg.com/tos-cn-p-0015c000-ce/oQMAAWIZzdPh2Eis4wP6bPdhtAiZXBoqxqX76~tplv-pk90l89vgd-fglass:864:486:90.jpeg?appId=32&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=101_middle_image&imageType=list&isImmersiveScene=0&is_stream=0&lk3s=9d3f5bff&logId=202412301017590BEF7EF9081E3A7659A3&requestFrom=101&x-expires=1767061079&x-signature=s2qyKxThL3FE%2F9czW0p3bwkAbIw%3D)
