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孔夫子的歇后语是什么 孔夫子穿西装的歇后语是什么? 三个化学方程式,要写出条件 What school is Kate i ___?填什么 设x＞0,则(x+2)(x+4)/x的最小值是____ kate is ------ ------- -------(从不迟到)school.谁快我就采纳水的,但要对kate is ------ ------- ------- -------(从不迟到)school不好意思,因为太急,打错了,应该4个空 What is your school ,并回答、、、快 .急.急.急.急.急 a属于N,A是所有满足不等式|x-a|＜a+0.5的整数的x的集合,B是所有满足不等式|x| what is "school boys"?shcool boys are ...--- 一个环形跑道长400米,甲乙两人从同一地点出发,方向相同.甲每分钟跑250米,乙每分钟跑350米.甲跑两分钟后乙再出发,问几分钟后乙追上甲?几分钟后乙第二次追上甲? 麻烦讲清楚语法,Books of this kind ______________ (sell) well. 若F(x)在x0点有定义,则f(x)在x0点必有极限若F(x)在x0点有极限,则f(x)在x0点必有定义判断这两个是否正确? 1.Japan is the only country _____A___the tea ceremony is held while people are drinking tea.A.where B.That C.Which D.For which错选了.B2.Most people believe that ti is the caffeine ___C____produces all the effects_______coffee has on the body.A.whi f（x)在点x0处有定义,有极限,连续这三个概念有什么区别 一道倍数用法的题,Jack gladly paid ___ for the used car for which Tom regretted paying $600.A.twice as much B.much as twice C.twcie as much as D.as much twice我查书上的的倍数的用法是 A is+倍数+as+形容词原级+asB 所以我选 麻烦解释两个句子.第一句：It's no use crying over spilt milk.请特别解释一下crying over spilt milk.还有over在这里是什么意思.第二句：It's no good talking with him about the problem.good在这里是什么意思?第三句 化学方程式13个求写清•1、氢气燃烧 2、电解水•3、高锰酸钾制氧气 4、过氧化氢制氧气•5、硫在空气中燃烧6、碳在空气中燃烧•7、铁在纯氧中燃烧 8、碳酸钠和稀盐酸•9、 3个化学方程式 上气不接下气,狼狈不堪.形容十分慌张或恼怒的成语. 一条环形跑道长400米,甲、乙两人练习赛跑,甲每分钟跑350米,乙每分钟跑250米 一条环形跑道长400米,甲乙两人练习赛跑,甲每分钟跑350米,已每分钟跑350米不对,是已是每分钟跑250米,若两人同时同地背向而行,几分钟两人首次相遇 如果函数f(x)在x0处有定义,且有极限,则其极限值必为f(x0) 为什么是错误的啊?谢谢! 函数f(x)在点x=x0处有定义是f(x)在点x=x0处有极限的既不充分也不必要条件吗 i was seventeen years old when my grandma died.后面全文 要写完形 我要那一篇文章！不是翻译 most students are seventeen or eighteen years old when they l( ) secondary schoo when he was seventeen?的同义句 同义句转换:he left school 5 years agohe left school 5 years agohe ______ ______ ______ ______ school for 5 years. 语文九年级上册《雨说》原文 九年级上册语文书"秋水"的书下注释 求九年级语文上册原文求九年级语文上册20课秋水《庄子》,24课诗词五首,25课《论语》十则,26课鱼我所欲也《孟子》,29课诗词五首的原文.老师要求默写,求原文~万分感谢. 司空见惯、见微知著、无独有偶的造句 已知一个函数是f(x),且f(x+1)=f(1-x),证明此函数的对称轴是x=1.如果是f(1-x)=(x-1)呢?如果是f(x+1)=f(x-1)呢?分有点少,待会再加）