小学生做家务

急求以“绿色梦想,文明生活”为主题150个字的英语作文 四分之三吨菜籽可以榨油五分之三吨,菜籽的出油率是百分之几?要榨1吨的菜籽需要菜籽多少吨? 黑板用English怎么说 2分之1吨菜籽可以榨油5分之1吨,菜籽的出油率是百分之几?要榨1吨菜油,需菜籽多少吨写上算是好吗？谢谢 问我四阶幻方的每行每列每对角线的和怎么求?它就告诉我三阶幻方每行每列每对角线的和是15 帮忙解几道有关数列数学题,可能有点难,一.设二次方程a(n)x^2-a(n+1)x+1=0 ,有两根cd,6c-2cd+6d=3 an表示a(n+1) 证an-2\3是等比数列 《3》a1=7\6,求an的通项公式 二.an前n项和sn,sn=(1+入）-入an,入不等于-1.0.《 【急需】两道关于数列的数学题（较难）》》【1】已知等差数列的第k,n,p项构成等比数列的连续3项,如果这个等差数列不是常数列,则等比数列的公比是（ ）.A.(n-p)/(k-n) B.(p-n)/(p-k) C.(n-k)/(n-p) D. 写一篇保护环境,从我做起的作文要按照小学四年级下册黄河是怎样变化的的思路写今天一定要答 Sandy wears beautiful dress today.感叹句 Sandy looks very pretty .(改感叹句）_____ _____Sandy looks! Look,Sandy looks very beautiful 同义句Look,___ ___Sandy looks! The girl in red looks very beautiful改为感叹句 黑板用英文怎么读 She looks tall and beautiful.对tall and beautiful提问有几种问法?能把所有的问法都罗列下嘛?还有有没有How/What is he like How/What does he like How/What does he look 的说法?How后能加look like 黑板用英语怎么读? She looks like beautiful, 黑板的英语怎么读? My friend has_____,and she looks beautiful 英文黑板怎么读 she looks young and beautiful.what s 什么 doea she teach? ______in white ,she looks much more beautiful.A.WearingB.DressingC.Dressed D.Having dresse 为什么呢ji 为什么呢 求这个数列的极限 she is a beautiful girl 怎么改成感叹句我是一个小学生那! She is a beautiful girl.（改为感叹句） 求数列极限数列lim[1/(1×2×3)+1/(2×3×4)+1/(3×4×5)+.+1/(n-1)(n)(n+1)要解法 求助翻译成英文(一定要人工翻译的)笔者在薪酬体系设计上,先是运用薪酬设计的相关理论,对比分析薪酬设计的各种单一、组合模式,提出了优化企业薪酬管理的对策,制定了基于公司战略的基 The girl is very beautiful___________ beautiful the girl__________! 求数列的极限 英语翻译现代日本漫画的发展阶段：“战争”之后半个多世纪以来,在日本的社会地位和人民的理解漫画改变.日本手冢乌萨马现代漫画分为六个阶段.第一阶段（二战后的头十年）：“玩具时 She is a very kind girl 改为感叹句 英语翻译According to Sperber and Wilson (1986,1995),the central factor that makes communication succeed is the pursuit of optimal relevance on the part of both the communicator and addressee.An utterance is optimally relevant (a) when it enables 将 she is a very tall girl 改为两种感叹句