描写学校的古诗

为什么亚铁离子的电子排布为[Ar]3d6,而铬原子电子排布为[Ar]3d54s1?亚铁离子为什么不能朝着稳定的方向发展? 铁离子与亚铁离子除电子排列不同外,其他的有什么不同 寻找关于魏晋南北朝时期的文化背景,最好是关于 吴越国 钱鏐 那个时期的 怎样评价魏晋南北朝时期的历史? 魏晋南北朝的评价及其历史 写一篇题目为 things that help one win and things that make one lose 的英语作文! It's those little things left undone that would make me angry if I knew that my hours were limited. the things that they do make wild animals angry 是什么句型结构 北极地区代表的动物是 南极地区代表的动物是 Words that make me really angry帮我找词!words taht make me really angry/happy/sad...etc都可以..好的追加50分! 南极地区的代表动物是什么? 她离开学校后做什么?what did she do after she school（leave）这个究竟填什么 构成阳离子的微粒中的数量关系、构成阴离子的微粒中的数量关系、 This is just a little something is what mean 怎么读 He always kept silent at meeting.( 他开会时总保持).这里的kept为什么用过去式啊?既然用always,那就应该用现在式才对啊. He always kept silent at meeting.句子成分分析? when____why,he kept silent a.asking b.ask c.asked d.being asked i have kept the photo _i can always see it ,as it always reminds me of the days when i studied in franceA when Bat the place Cwhere Dwhich解释一下 the secret to和the secret of有什么区别 初中的学习生涯即将结束了…三年来,在你获取知识的同时,你的外貌,兴趣爱好,习惯…都有了一定的改变吧! 谁知道蝴蝶的居住习惯和外貌特征,尽量简洁一点的 then he smiled,turned to henry and said quietly,"bicycles"...smiled,turned to 分别是什么句子成分,smiled后面要加逗号,turn改成现在分词行吗 Then he smiled turned to Henry and said quietly," Bicycles.".turned 初中的生活,你习惯吗我刚身为初中生... 硅胶保温如何,0.3mm厚度,与ABS外壳材料 0.3mm.两者哪个保温好些.热传递哪个快些? 英语翻译Due to DD6641 has been delayed near upon two months,so as to defer the installation and buy-off.Thus we request you can protract warrant on this two machines.不是翻译，是看看这段英文有没有错 reflection中文歌词 reflection是什么意思? 英语翻译还有06超女50进20中长沙或杭州有人唱了这首歌直接晋级了请问她是谁啊 reflection的歌词翻译 she can't understand the meaning of the new word中为什么是meaning而不是mean?说明理由 his face turned still ____ (red)请问是否用redder,为什么