2023届全国100所名校单元测试示范卷语文19答案

2023届全国100所名校单元测试示范卷语文19答案，全国100所名校答案网已经编辑汇总了2023届全国100所名校单元测试示范卷语文19答案的各科答案和试卷，更多全国100所名校答案请关注本网站。

全国100所名校高考模拟金典卷文科政治Y

12.ACD【命题意图】本题考查直线与圆和椭圆的位置关系，涉及直线的斜率、圆的标准方程与几何性质、椭圆的离心率，体现了直观想象、逻辑推理、数学运算等核心素养。【解析】由题意知kw·(）=-1,所以ko-子在圆A中，因为OA=AD,所以∠DAx=2∠DOA,则mL4=m2∠01，所以d-号解得.1mLD0A=号或an∠D01=-2(舍去)，所以a0-2,故A正确.设A(m,0)(m>0),则圆A的方程为(x-m)2+y2=m2,所以点A到直线BC的距离d=13m-5-1ml.化简，得16m+30m-25=0,解得m=号15】√32+47(负值已会去)，所以圆A的方程为-名)+-点。故B错误易知4（日，0），所以由点斜式可得直线D的方程为y=气：-8)，放C正确，设椭圆E的方程为手-1(o>60).B(k).C),w,则手01①等-1@①-2.得，0a262理利告器-x1-x24’x1+x22所以子则-所以a

全国100所名校示范题答案

第四部分写作第一节One possible version:Dear Friends,As the weather is getting colder and colder,it's hard for the stray cats and dogs to look for food,sowe are starting the campus cat and dog food donation.This is how you can participate.You can bring youritems for donation to our donation location which is located in the hall of the campus library.Just drop offthe items there during usual library hours from January lst to 23rd.The donated food should be likecanned meats and ham sausages.We will distribute the food to some stray cats and dogs in ourcommunity.We truly appreciate your help.Many blessings,Joanna

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