2022英语周报高一外研第57_答案

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)

28.(1)2c+b-a(2分)(2)①>(1分)②0.16(2分);4(2分);不变(2分)(3)①NH4NO3(仅答“NH3·H2O”不给分,多答“NH3·H2O”不扣分,1分);NO+6H++5eNHH2O(2分)②(NO)>c(NH)>c(H+)>c(OH-)(2分)(4)O为将NOh氧化成更高价态的氮氧化物(1分)【解析】本題主要考查化学反应原理,考查学生的综合运用能力和理解能力(2)①由图可知温度升高,平衡逆向移动,则该反应的正反应为放热反应;D点对应的CO2的百分含量低于A点对应的,处于不平衡状态,而化学反应最终必须达到平衡状态,D要回归到A点,使CO2的百分含量增大,化学反应向正向进行,所以>。C(s)+2NO(g)CO2(g)+N2(g)c(起始)/(mol·L-1)00△c/(mol·L-1)1.60.80.8c(平衡)/(mol·L-)0.40.80.8NO=4=16mol·L-1100.16mo·Lmn;K=C(COh2)·c(N)_0.8×0.8C(NO)0.4C(s)+2NO(g)。COh(g)+№2(g)反应前后气体体积不变,保持温度和容器容积不变,向密闭容器中充入N2、COh2各0.60mol(按生成物比例加入),平衡后各组分的百分含量变化情况,相当于加压,所以新的平衡后,CO2平衡体积百分含量不变(3)①电解池阴极发生还原反应,由总电解反应式可知,NO还原产物为NH+,其电极反应式为NO+6Ht5e -NHt +HgO②常温下HNO的电离常数K,=7.1×10-4mo·L-1,NH3·H2O的电离常数Kb=1.7×105mol·L-因为K>K,NH的水解程度大于NO万的水解程度NHNO2溶液显酸性,故0.1mol·L-的NHNO2溶液中各离子浓度大小顺序为c(NO)>(NH)>c(H)>c(OH-)(4)n(X(5>1时,NO的含量降低,可能是O将NOh氧化为了更高价态的氮氧化物

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