英语周报七年级新目标22期答案

和熙及血。3.参考答案D说明分析MR、X、Y为原子序数依次增大的短周期主族元素,Z是一种过渡元素。M基态原子L层中p轨道的电子数是s轨道电子数的2倍,则M基态原子核外电子排布式为12s2p4,故M为O元素;R是同周期元素中最活泼的金属元素,则R为Na元素;X和M形成的一种化合物是引起酸雨的主要大气污染物,则X为S元素,可知Y为Cl元素;Z的基态原子4s和3d轨道处于半充满状态,则Z的价电子排布式为3d4s,故Z为Cr元素A错误,电子层数越多的离子半径越大,离子的电子层数相同时,原子序数越小,离子半径越大,故Ⅹ、Y、R、M的离子半径大小顺序为X>Y>M>R。B错误MYR对应的简单氢化物分别为水、氯化氢、氢化钠,沸点大小顺序为NaHH2O>HCl。C错误,根据非金属性的强弱只能比较最高价氧化物对应的水化物酸性。D正确,M的价电子数为6,位于第ⅥA族,R的价电子数为1,位于第IA族,Ⅹ的价电子数为6,位于第ⅥA族,Y的价电子数为7,位于第ⅦA族,Z的价电子数为6,位于第ⅥB族。

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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