二战乐高日军南京保卫战

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请各位网友帮我计算:一个半圆的周长数值的等于它的面积求圆的半径 若x=2,y=-1是二元一次方程组ax+by=-2的一个解,则2a-b+7 初一数学六道解方程写完给好评 一个圆的周长为9.42厘米,面积是( )平方厘米. 一个半圆的周长是257厘米,它的面积是( )平方厘米 一个半圆的周长是10.28厘米,面积是?平方厘米.急 初一数学解方程要过程(3x-4)/3-(x-1)/4=1-(x-1)/12 在0括号里填上适当的数,使每个方程的解都是8.X+()=23 ()×x=4 ()-x=4.1 1.There are four factories in our institute,_____.A.with each having over 100 workers B.each having over 100 workersC.which there are over 100 workers D.with each that has over 100 workers2.He wasn't asked to take on the charmanship of the society ,_ C1.Hardly _____ in the past then months.(为什么要选C?)A.have it rainedB.it has rainedC.has it rainedD.had it rainedA2.The first name is the given name in _____,but the first name is the family name in _____.A.English:Chinese(为什么要 1、2、3、4、5、6、7、8、9、10、 鑻辫?棰樹笉浼氬仛 楹荤儲鍚勪綅楂樻墜甯?府蹇欏憖1銆?img class="ikqb_img" src="http://h.hiphotos.baidu.com/zhidao/wh%3D600%2C800/sign=01df2c94f7246b607b5bba72dbc83674/4b90f603738da97786c4f4ecb151f8198718e30a.jpg" esrc="http://h.h ( ) 10.What she says and does _____ nothing to do with me.A.was B.were C.has D.have( )12.Nobody ______ seen the film.It’s a pity.A.but Tom and Jack have B.except Tom and Jack haveC.but my friends has D.but I have 当b为何值时,关于x的方程X-2的绝对值=2b+1无解 2只有一个解 3只有两个解,要有分析过程 当B为何值时,方程X-2的绝对值=B+1.1,无解.2,只有一个解.3,有两个解 当b为何值时,方程x减二的绝对值等于b加一 1:无解,2:只有一个解3:有两个解 we can learn about the history of my hometown form the buildings l_______ there.we can around chasing a__________ lighting bugs till dack.首字母填空. 1.Many people are not aware of ____new technologies are already being used in the home.A.how very much B.How many C.how much D.how many more 2.We understand _____to sign another contract with the firm.A.him not to want B.his not wanting C.he not want 第二题选什么,具体分析一下, 请问这个题选什么?求解析 第二题,选什么, 这道题选什么 求讲解 初一数学题,三元一次方程组,请用详细过程解答.甲乙丙三个数的和是35,甲的2倍比乙大5,乙的三分之一等于丙的二分之一,求这三个数. 从1999年11月1日起,全国储蓄存款需征收利息税,利息税的税率是20%,王老师于1999年5月1日在银行存入人民币20000元,定期一年,年利率为3.78%,那么存款到期日,王老师一共可得本金和利息?元 初一数学题,求具体说明解题过程若不论a为何值,关于x、y的二元一次方程(a-1)x+(a+2)y+5-2a=0必有一组解恒定不变:(1)请求出这组解(2)用你求出的解,验证这个结论 请用一元一次方程解答,并且要详细的解方程的过程,如果可以让我看懂,我一定追加,在长方形ABCD中,AD=BC=12cm,AB=DC=8cm,点P和点Q分别是两个运动的点.动点P从A点出发,沿着线段AD向D点运动,速度是1cm 这两道题选什么,为啥?Is the school( )we studied at ten years ago?a which b where c that d the one 这两道题应该选什么 这两道题选那个,谢谢1. I like writing my own original sentences __the grammar I've learned.A.use B.to use C.used D.using2. If oyu want to work for our country in the future,___,you should have strong body and rich knowledge.A. at first B. f 帮我看看这两道题选什么? 1.I'm afraid I can't make myself ___A.understood B.understanding C.understand D.to understand选A2.Xinjiang is a region ___mountains and deserts.A.with B.having C.which has D.all of above选D 历史题目解析 为什么选B某史书记载:正月望日,京城各寺,水陆普度大斋之会竞相而办,从者甚众;盛饰灯影之会,金吾弛禁,特许夜行.贵族戚属及下隶工贾,无不夜游.判断下列关于这段文字描绘