硫的化合价

墨西哥安全吗 Try to guess which ___________ the horse ___________ to me?A.does ;belongsB.is; belongC.is; belongingD.is ;belonged You never understand me not to You never understand me not to guess because Chinese law does not allow certain things ···Do not be too difficult to accept the reality because it does not fit the reality ··If there is an opportunity I would say I 水浒传、西游记读书笔记分别3000字.水浒传主要人物故事、西游记主要人物故事各3000急啊~~! 0.0 怎样学鬼步舞 墨西哥旅游 去古巴 墨西哥旅游需要带什么日常用品 由钾和氧元素组成的某混合物中,含钾的质量分数为78/126,其中混合物中只有O2 2-（过氧离子）和O2 -（超氧离子）两种.此晶体中,O2 2-和O2 -的个数比为 chemistry question!Explain the following observations.a.Gases but not solids can be compressed easily.b.A liquid expands more when heated than an equal volume of a solid.Please answer my questions in english!tks A chemistry questionExplain why chlorine is a gas at room temperature 墨西哥的地理特征（不要一大堆文字、就两三个词语就可以了）.结合气候和资源分布来回答、谢谢、 墨西哥好吗? 怎么去墨西哥 Organic Chemistry SOLOMONS 10th的pdf电子书 Lucy has a round face,but Lily has a long face 合并为一句无 Lucy has a round face.Lily has a long face合并成一句：Lucy and lily____ ____. Lucy has __(long) hair than Lily 两种元素组成的物质是混合物吗 由MgSO4,MgSO3两种物质组成的混合物,经测定混合物中含硫元素质量为28%,则混合物中氧元素的质量分数是——求过程(∩_∩) 有机化学第五版影印版答案《organic chemistry》L.G.WADE,JR.高等教育出版社的 来人啊 救救我吧 请发至邮箱45324870@qq.com in the in the end还可以等于什么,写全点 There is alake in the park.用river作选译问句 we'll have ____ ___holiday .我们将有一次八天的假期 这两个是什么离子的符号? 河里有个男孩：There is a boy in the water,怎么不是river? 英国概况:In London,West End is usually the place for______? in the end 1.I have worn out my shoes,so Iwant to buy a new() ____in my present work,I would be quite willing to do what you ask me to正确答案是哪个A.If I am not engaged B.It I don 't engageC.Were I not engaged D.Didn't I engage 我这只黑白条纹的鱼是啥鱼 are you willing to work without any reward?请问面试时用英语怎么回答?