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cake中a的音标
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More and more people are becoming serious with divorce
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They're speaking to each other.这句话中为什么speaking后面加to
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英语句子英译汉The best high temperature red RTV Silicone is of GE (
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come and ------ the photos ,please.they are very nice.
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生活饮用水卫生标准
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如何把微积分,统计学应用到生活中,应用到工业中?
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2（a²-2ab-b²）-(-a²+3ab+3b²) 先化简,再求值；其中a是绝
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若ax平方＋5x＋b＞0的解为1/3＜x＜1/2,则a＋b＝
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已知中心为原点,对称轴为坐标轴的椭圆焦点在x轴上,离心率e=√2/2,直线x+y+1=0与椭圆交于PQ两点且OP⊥OQ,
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【急!就一题】地球的半径=6.4*10的三次方km,求地球的体积,π取3,V=4/3πr的立方
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什么叫国际日期变更线怎么变的,我咋搞不清楚
