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初一有理数加法一、如果x-y=6,则x+(-y)=( ),(-x)+y=( ),-(x-y)=( )二、已知a=-1/3,b=2/3,计算：1、a+b ；2、a+(-b) ；3、-a+b ；4、-a+（-b）. 问一下初一的有理数加法 1.(-1)+(+2)+(-3)+(+4)+……+(-99）+（+100）===2.一位农民经纪人10出售袋大豆给粮油批发市场,按规定每袋应为100千克.在过磅时,误差记录如下（单元：千克）：-4,+3,+1,0,0,2,1,-1,0,-1.请你用简便方法帮这 计算(3m+2n)(7m-6n) 设集合M=｛1,2,3,4.1995｝,A是M的子集,且满足X属于A时,15X不属于A,则元素个数的最大值是 （3m+2n）（7m-6n）等于多少? 考虑集合{1,2,...2000}的满足下述条件的子集a,a中没有一个数是另一个数的五倍,求a元素个数最大值 请求详解该集合题：在集合{1、2、3.50}的子集S中,任意两个元素的平方和不是7的倍数,求|S|的最大值题中|S|应是指元素个数，即指最多的元素个数，而不是指元素的值之和。 根据括号中所给的汉语写出单词,使句子意思完整正确1.Yangzhou Museum is very big,and it has______（出口）on each of its three sides.2.It's wonderful live on the______（二十）foor.You can have a bird's-eye view of the whole 1、本下列可作为VB的变量名的是( ) A. 4*A B. 4*a C. 4a D. A4 2、在VB中,以下赋值语句错误的是（） A.x=2、在VB中,以下赋值语句错误的是（）A.x=2xB.x=x+1C.x=x+xD.x=x*x3.下列Visual Basic程序段运行后,变量A c语言之 y=(x%2)/10赋值语句为何错了 X被定义为integer类型,y被定义为boolean类型,对赋值语句y=1 根据首字母提示,补全单词 和根据汉语提示,完成句子1.it's raining you'd better put on your r_____2.London is the c___ of England3.it's rainy today because I watched the weather r___4.what's your g___for josh's birthday?5.we are p___ 根据首字母或汉语提示完成句子.从6.开始是根据句义及首字母提示完成单词.His a_____(年龄）is fourteen.2.My p_____number is(010)458-7686.3._____(带来）your bag here.4.What's this_____(用)English.5.Her hair is _____( 太阳发出的光是以什么路线传播到地球表面的 太阳发出的光要经过几分钟才能到达地球? 一光年是光跑一年的路程 VB中赋值语句的有效性下列哪些赋值语句是有效的?sum=sum-sumx+2=x+2x+y=sumlast 太阳到地球是几光年? 太阳距地球多少光年 根据句意及汉语或首字母提示写单词,补全句子.1.Happy Valley is a famous ________(娱乐)park in Shenzhen.2.The telephone in the office was _____(失灵的)just now.3.The questions Judy asked were ____(相关的)to the class project o 太阳离地球有多少光年?我们的星球离太阳大概有多少光年?还有一个问题老是在困惑我!就是假如太阳离我们地球有5光年,那么太阳在这时候爆炸或消失的话,在我们地球是否也是这时候看到太 根据汉语或首字母提示补全单词,完成句子1.I learned a lot of k____ about English.2.I often go swimming during the summer v____.3.We have a f____ of 20 years.4.They wanted to ____(分享）each other.5.The farmer ____(喂养) chickens a 根据句意及首字母提示补全单词 根据汉语提示完成句子 He likes pop.But he has become a fan of t______（电子音乐）. I also like pop and rock music.It is b_____（好极了）. 除了戏剧外,莫扎特还 520.521.有何区别 在下列各句空白处填上适当的词 使句意完整 首字母已给出1：People always l____ at her when she spoke.2：March 8th is W____Day.3：I'm s____ my money so I can buy a new bicycle.4：The film was not interesting.She turned o_____ 1：2： 英语翻译苗族语里微也木是不是也是我爱你的意思呢？ 天文学常用光年作为距离单位规定光年为光一年传播的距离光的传播速度3X10的8次方米/秒则1光年=?千米 合并同类项：5m的3次方-2m的2次方n-5m的3次方+3/2nm的2次方-5+3m的3次方 根据句义及首字母提示或汉语提示完成下列单词.（#号表示所缺的单词）1.My father is going to work # .(在海外）2.Who gave you p# to leave class early?3.I r# a letter from one of my friends yesterday.4.Do you want to s# wi 根据局以及首字母或汉语提示,写出所缺单词.（1）I'm very t____.I want a rast.(2)Please give my best w____ to your parents.(3)A man c____ Zhou Jian puts his family name first.(4)Miss Gao doesn't have anything to do.She is f____(5)Mid