炎德文化数学2024年普通高等学校招生全国统一考试考前演练一答案
A.18B.18√2C.20D.20W26.平面向量a,万满足=2a,且a-=3,则万与a-b夹角的余弦值的最大值是()5A.-2B月cD210-2ax,x>117.已知函数f(x)=1og1(x-),1<x≤11的值域为R,则实...
A.18B.18√2C.20D.20W26.平面向量a,万满足=2a,且a-=3,则万与a-b夹角的余弦值的最大值是()5A.-2B月cD210-2ax,x>117.已知函数f(x)=1og1(x-),1<x≤11的值域为R,则实...
x=±V2ac联立C,C2的方程,解之得Vate262y=±Vatc2不失一般性,可设A在第一象限,所以点A(V2c62).…(7分)Va2+c2’Va2+c2Va+c)=IV(V2c+Va+e)+b.Vate2同理,AF2'=(V2c...
如图所示的空间直角坐标系0-92,则D20,0),A(-2,0,0),C0,2√5,0),P(0,0,2V5).因为PE=1PC,可得PE=(0,2√3元,-2√5),得E(0,2V5,2N5-2√5),(6分)所以DE=(-2,251,2W5-...
高考模拟信息卷则co12,6(9.-0),r(90)即MkON=一一4整理得,数学koN =kAMo-(-9}0,0元-01.2,i-(9即ON∥AM,9分)(7分)若AB不过原点,直线ON交AB于S,由N为W-小的中点且...
(2)在044+cm2A-1;②4,1-B-0:③DacwC+ems4=1中选-个作为条件,sinAsinB的判断△ABC是否存在,若存在,求出△ABC的面积,若不存在,说明理由.(注:如果选择多个条件分...
(六)l.B细节理解题。根据第二段中的“Annan,who lived not far from the UN European headquarters inGeneva,died in a Bern hospital,Swiss media reported.”可...
'smile always had a 48 "Hello!"to go along with it.M1.表示祝贺,was 49 as he was strict and serious,but I loved seeing it when he sometimes 502肯定她...
平遥县2022-2023学年度第二学期八年级期中教学质量监测数学答案一,选择题:DABCCCDCBA二.填空题:11.5x-y>112.1013.x>-414.1,215.10°或80°或20°或140°3三.解答...
2022/2023学年度第二学期五校联考期中考试高一年级数学试题命题人:夏诗伟审题人:蔡艳做题人:夏娟(总分150分考试时间120分钟)注意事项:1,本试卷中所有试题必...
34.According to the test,Brigitte Howarth was worried aboutA.the flood caused in summerbB.the living environment of the midas flyC.the damage of the d...
答案专期2022一2023学年四川专版(人教版)九年级第13~18期分数学闭报MATHEMATICS WEEKLY又因为∠ABC=∠DEF=90P,所以△AC一ADBR所以能=祭因为AB=5m,BC=4m,E=6m,所以...
he deyhmisintompiniwhoehhesmtepmilhh,eenmindMomenetagscsgSheyadnthendayThoewith eperienee eam more they get about 24 per day or much a.Inexperiencedpt...
全国100所名校高三AB测试示范卷札记全国@0所名校高三AB测试示范卷·数学第三套滚动内容十一元二次函数、方程与不等式(B卷)(40分钟100分)考情分析,国跟微信扫码高...
第8章直线与圆、圆锥曲线学生用节【学科核心素养】[小结]1.讨论或利用椭圆几何性质解题时,一是注意椭圆中的不等关系,在求与椭圆有关的一些考点4:卧直线与椭圆...
八年级数学(北师大版)000600060白960006针对训练答:购进1件甲种农机具需要1.5万元,1件乙1.A2.A3.A4.D5.B6.C7.D8.A种农机具需要0.5万元9.B10.C(2)设购进甲种...
(2)以A为坐标原点,AB、AD、A4,分别为x、y、z轴正方向,建立如图所示的空间直角坐标系A一)z,则A(0,0,0),B(2,0,0),A(0,0,2),E(1,0,1).C(2,4,0),F(2,2,0):AE=(1,0,...
A佳教育·2023年秋季高三入学测试6.大气压强p=压力受力面积它的单位是“帕斯卡”(Pa,1Pa=1Nm2,大气压强pPa数学随海拔高度(m)的变化规律是p=p,e“(k=0.000126m1),P,是...
∴将线段AB向下平移2个单位长度,向左平移3个单位长度,作图如下,四边形AABB即为所求作的四边形:如下图所示,用粗线框的面积减去四个直角三角形的面积即可求出...
(2)由xgx)0,得e-寻-2=0,当x0时,方程--2=0化为e是-2=0,即e+1=0,所以方程无解:当x0时,e-2-2=0,整理得(exP-2ex-3=0,(ex+1ex-3)0,因为ex>0,所以ex=3,即x=ln3本...
形,△CB,C是顶角为C的第三个黄金三角形,△B,CC是顶角为B,的第四个黄金三角形…,那么依次类推,第2023个黄金三角形的周长大约为()B,B.A.2.236×0.618221B.2.236×0...
2023~2024学年度第一学期四校联考(二)数学试卷命题学校:东莞市第六高级中学命题:周国真审题:王蔷薇说明:本试卷共4页,22道题,满分150分。考试用时120分钟...
又GA,⊥平面EFC,所以V。GBs=SG·GA,=日×(日×3X1)X8=,三棱锥B一EFG体积为,故B正确。对于C选项,当A=时,AG=A1E且A片1平面A,。所以根据球的性质容易判断,三棱锥A1...
【答案与解析】 本文主要讲述了作者在弟弟的启发下坚持写感恩日记的故 事。 1.C 根据第2段可知,作者的弟弟懂得感恩,提倡感恩。 2.A 根据第3段第1句可知,作者...
ture and feel like they can control important outcomes. They tend to stay positive whatever comes their way. 17 There's good news:The mindset is about...
【答案56.advanced57.for58.mainly 59.dates 60.hung 61.to harvest 62.the 6 63.which 64.had been known/was known 65.indicating
sense of going to college when I grew up.I think her greatest contribution was simply that she loved me very much.No matter what happened,I had my mot...
Because of the easy use,portability,low price,and small size,it's absolutely worth it!Just imagine amazing pictures and videos you'll be taking with y...
【答案】56.traditional57.talented58.is meant 59.in 60.to educate 61.a 62.ranking 63.where 64.entertainment 65.eventually
19.Why did the students go to Canada? A.To go sightseeing. B.To attend a concert. C.To visit a high school. 20.What do the police say about the accide...