谈谈你的英语学习经历LearningEnglishonline(80words)内容必须包括:(1)
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我国是历史上最早种植粟和蔬菜的国家,这个最早种植地你认为是哪
2010年国家对种植蔬菜有哪些补贴政策?
H2SO3在水里电离出什么
H2SO3在融融状态下电离吗
H2SO3溶液中会电离出亚硫酸根离子,怎么不会和BacL2反应?
咋H2SO4能和氯化钡反应,H2SO3就不行了?H2SO3溶液中会电离出可以和Ba2+结合的亚硫酸根离子
瓷器和陶器的发明有啥历史意义
最早发明陶器的国家是
Ca(OH)2中为什么有溶解平衡Ca(OH)2可逆生成Ca2+(aq)+2OH-(aq)呢?Ca(OH)2是强电解质,完全电离啊
Ca(OH)2是不是强电解质?可以说Ca(OH)2为强电解质吗?为什么在强电解质归类时一定要写 澄清石灰水?
我国是世界最早发明瓷器的国家,瓷窑最早出现于 A夏朝B商朝C西周D东周
2NaoH+CaCl2--2NaCl+Ca(OH)2 是否加沉淀符号Ca(OH)2微溶
1、The storm died away at last with the golden waves_____the shore in peace.A beat B to beat C beating D beaten 2、Shall we have some tea as the meal _________?A is being prepared B is prepareing C is prepareing for D was prepareing for 3、I was r
1.I would rather have someone_____me a loving “no” than an obligated "yes"A.giving B.to give C.give D.given但是为什么不是have sb.done?2.As everybody knows,arms are to the body _____branches are to a tree.A.that B.which C.what D.as3.Her new
电离方程式 (NH4)2so4------- Na2Co3------------------ Ca(oH)2----------------- K2So4-------- CuSO4--(NH4)2so4-------Na2Co3------------------ Ca(oH)2----------------- K2So4-------- CuSO4---- KNo3---------- NaoH---- Ba(oH02------ H2So4----------- H
She liked the famous painting very much,so she would like to buy it ___ it cost.A.what B.whatever C.how D.however为什么不选A?
All cases____children are dealt with in a special children's court.A.respectable B.respected C.respecting D.respectful(要翻译 理由)
--Why did he have to leave school?--He happened to________a laptop computer from the school labratory.A.be seen steal B.be seen stealing C.be caught to steal D.be caught being stealing
— What do you want us to do for you?— I hope you could help me find out whether the goods ( ) to the port have arrived.A.transportingB.being transportingC.are transportedD.transported要讲理由的
________we should do to protect wildlife?A.Do you think what B.Do you think how C.What do you think D.How do you think是选C还是选D勒?谢蛤a~
第一台电视是谁创造的,求急!求急
HClO在水溶液中的电离方程式
Children are ______by health experts to take more physical exercise,for lack of it may produce disastrous influence on their later lire.A.suggested B.warned C.informed D.advised请问A、D里面选哪个啊?我检查了几遍,最后一个是lire,
HClO的电离方程式!如题·!
【HClO4 电离方程式】
CL2+H2O=HCL+HCLO的电离方程式怎么写?
KMnO4的电离方程式是?
there is a limit______imy patienceA with in B in C to D with
KClO3的电离方程式
最早的电视机是谁发明的?
NaHSO4在水中的电离方程 H2S在水中的电离方程式分两步
H2S的电离方程式