2023届高三一起考大联考(模拟三)地理答案考试试卷

2023届高三一起考大联考(模拟三)地理答案考试试卷，目前全国100所名校答案网已经汇总了2023届高三一起考大联考(模拟三)地理答案考试试卷的各科答案和试卷，更多全国100所名校答案请关注本网站。

23.【命题意图】本题考查柯西不等式的应用，体现了逻辑推理的核心素养【证明1)：。+方=1，且a66均为正数由柯西不等式知(a+46+9e)合+名+）≥(1+2+3)2=36.(4分)》.a+4b+9c≥36，当且仅当a=2b=3c,即a=6,b=3,c=2时，等号成立(5分)(2)由柯西不等式知(a2+b2+c2)(1+1+1)≥(a+b+c)2,2+64e≥a+e,当且仅当a=bc=3时，等号成立.①(7分)(a+6+e)后+6+号月)≥(1+1+1)2且。+号+∴.a+b+c≥9，当且仅当a=b=c时，等号成立.②(9分)由①②知。2+4心≥号-27，当且仅当a=bc=3时，等号成立(10分)】

第四部分写作第一节审题指导)》本题要求就“中学生如何为世界抗疫尽一份力”写一篇稿件。考生可国绕这一话题的背景、具体做法、表明信心三方面来写。时态为一般现在时和一般将来时。题目内容贴近考生日常生活，易于考生动笔。第一段要给出全球疫情这一背景，主体段介绍具体做法，最后一段表明信心。【参考范文】Over the past two years,the novel coronavirus has madeits way around the world.It has a strong impact on our lifeand study.In order to ease the serious conditions,all studentshad better do as follows.First,stay at home and don't go out unless necessary,which is beneficial to yourself and others.Second,do wearprotective masks outdoors and wash hands as often aspossible.And lastly,everyone ought to have a positiveattitude to the campaign against the disease.We have confidence that we will win the fight soon.亮点评析)范文层次分明，要，点齐全，语义通顺。作者在文中使用了一些高级词组，如make one'sway,have a strong impacton,in order to,be beneficial to,as often as possible等；还有不少高级句式，如which引导的非限制性定语从句(Fist,stay at home and don't go out unless necessary,which isbeneficial to yourself and others.)和that引导的同位语从句(We have confidence that we will win the fight soon..)等。这些高级词组和高级句式的使用为文章增色不少。