2022英语周报八年级外研第12期答案

(1)Na[(](2分)(2)2H2O2MnO),2H2O+O2↑(3分)(3)2SO2+化剂25O(3分)(4)NaOH(2分) NacIo(或NaHS)(2分)【解析】由题意可知,X、Y、Z、M、N分别为H、O、Na、S,Cl。(1)NaC的电子式为NaC时。(2)H与O形成的10电子分子是H2O,形成的18电子分子是H2O2,H2O2发生分解反应转化成H2O的化学方程式为2H2O22H2O+O2↑。(3)由图可知,SO2与O2反应生成SO3,化学方程式为2sO2+O2化钢2SO(4)A能抑制水的电离,且组成元素的原子个数之比为1:1:1,则A是NaOH;B能促进水的电离,则B是能水解的盐,且组成元素的原子个数之比也为1:1:1,则B是 NaClo或NaHS

第二节书面表达【写作思路】根据试题要求,考生需要写一篇记叙文,记述身边一位值得尊敬和爱戴的人。首先考生需要介绍自己最尊敬和爱戴的人是谁,简单地介绍一下他(她)。然后,陈述为什么他(她)值得尊敬和爱戴。最后,可以对前文进行一个总结,使文章结构严谨。本文的写作重点在"尊敬和爱戴的原因",考生可围绕这个要点适当拓展,从性格特点、处事风格等方面展开写作。【范文赏读】The most beloved and respected person around me is my teacher, Ms LiThough she has been teaching English for twenty years, she is still passionateabout teaching. She is kind and considerate towards us just like our dear motherWe all respect her because she always tries new ways to make her classes livelyand interesting. Hardworking and knowledgeable, she is one of the best teachersin our school. When we have a problem, we will turn to her for help. She alwaystalks to us patiently and helps us to find a solution. In our eyes, she is not onlyour teacher, but also our best friend. Those are why she deserves our respect【亮点词句】亮点词汇: beloved, respected, be passionate about, be consideratetowards, turn to sb. for help, in one's eyes亮点句式:Why引导的表语从句( why she deserves our respect)

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