景德镇市2023届高三第三次质检语文

19.解:(1)∵M,N分别为PC,PB的中点,AD∥BC∴AD∥MN,即A,D,M,N四点共面N是PB的中点,PA=AB,∴AN⊥PB∵PA⊥底面ABCD,∴PA⊥AD又∠BAD=90°,即BA⊥AD,又PA∩BA=A,∴AD⊥平面PAB,∴AD⊥PB.又AD∩AN=A,∴PB⊥平面ADMN.(6分)(2)由(1)知,PB⊥平面ADMN,PN是四棱锥P-ADMN的高,且PN=2PB=√2(8分)∵四边形ADMN为直角梯形,且MN∠-BC,∴MN=,AN=2∴四边形ADMN的面积S=×(2+)×V2=52(11分)四棱锥P-ADMN的体积V=3s·PN=312分)

【命题视角】本题考查交集和补集运算,考查运算能力【解题分析】因为M∩N={-2,0,1},所以C(M∩ND={-1,2【答案】B

第二节书面表达【写作指导】本篇书面表达要求考生写一封邮件。根据题目要求可知,时态应以一般现在时和一般将来时为主,现在进行时为辅;人称以第一人称为主。邮件中定要囊括题目要求中所给出的两个要点:目前的学习状况和考试结束后想要去旅行的地点及原因。内容可适当扩充,不要逐条翻译要点,注意过渡词的灵活使用,同时可多运用一些高级词汇和句式,以提高作文的得分档次。One possible versionDear peterI am glad to receive your letter. Thanks for yourconcern about my recent learning status and my travelarrangements after the college entrance examination, which Iwill explain respectively as below.With the examination drawing near, I am now fulldevoted to my study in the hope of making myself admitted tomy dream university. As for the travel plan after the examI'm considering touring around Beijing. Not only is it anamazing city with varieties of tourist attractions, but also it ishome to many top universities, which fascinates me a lotThanks again for your concern about me. Wish me goodluck in the exam!天LiH