2023一2024学年第一学期期中教学质量监测九年级语文参考答案及评分标准1.BC(2分)【解析】甲作品的字体笔法流动自如，结体多姿，是行书。“百舸争流，奋楫者先”的...

20.一个不透明的袋中有。个正品零件和b个次品零件，从中任取一个，如果取出的是正品，则把它放回袋中：如果取出的是次品，则该次品不放回，另补一个正品放到袋中...

数学2023-2024学年人教八年级答案页第2期®学习团报第7期13.2画轴对称图形(3)平行理由：如图，连接BD和2版1.BEC,AF交BD于点G13.1.1轴对称2.解：如图，四边形A'B'C...

(2)答：CD⊥AE.因为a=31b1,而.证-(a-b小（合+）…6分…8分laP-2 1-(361)-0…9分所以CD1AE,所以CD LAE.…10分18.(12分)【解析】(1)由图可知众数为75；…2分因为0.05+0.0...

21.解：(1)因为f)=(1+)nx+1-+1血x+a+1,所以f(=-n-ax设g(x)=x一lnx一a,因为f(x)在(0，十o∞)上是增函数，所以g(x)≥0恒成立，因为g(）=1-1=1,当xC(0,1)时，g(x)<0,g...

第9章统计学生月书(2)样本相关系数r的性质当r>0时，表明成对样本数据Y=0Y=1合计X=0a6a十b当”<0时，表明成对样本数据X=1dc+d合计a十cbdn=a+b十c+d样本相关系数r的...

设EF所在⊙0的半径为r,=9,.该正多边形为正九边形·直线AB与⊙0相切，..OH=r,∴.AB=2AH=20H·tan30°=233,B60XT×r1第1题解图la=180=3r,1.1BCD√3AB-6 T1,【解析】由题图...

Why hasn't Anna bought her plane ticket?9.题A.Because she didn't want to go out.B.Because she hasn't saved enough money.C.Because she is very busy and...

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X0123P合211030“E()=0X日+1×号+2×品+3×品=g.(13分)(3)由题意可得小明同学在一轮测试中为“优秀”的概率为P=cG(号×1-名)+C()=员，∴.小明在n轮测试中获得“优秀”的次...

ABIm-=m+m=4nm=/-4n2a、所以PA·PB=m,T·m11n因为a∈（空x).所以2a∈（π，2π），故-1≤sim2a<0.则0<-4sin2a≤4，AB所以pPA.PB=√厂1sn2a<2,当且仅当=预时，等号成立.AB...

7如图，在一个圆柱体容器内装入一些水，水面AB在圆心O下方，且AB=24©m,水的最大深度是8cm,则图中截面圆的半径为A.8 cmB.10 cmC.13 cmD.15 cm24 cm-8.如图，在R△A...

第4版听力材料写作空间1.W:Is this your watch,John?【写作练习】M:Yes,it is mine.Thank you参考听2.M:Mary,are you OK?第一步：W:No.I lost a set of keys1.pe...

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19.(本小题满分12分)元若函数fx)=2sin(ox+3)在(0，)上恰有两个零点，其中o∈N*.(1)求w的值：6(2)若fx)=5,求sin(x-12的值.20.(本小题满分12分)在△ABC中，角A,B,C所...

第6期A2版Keys:(One possible version)高频词汇I.1.reaction2.equipment3.treatment4.satisfactionⅡ.1.paid off2.try out3.got through4.from then onIIⅡ.l.clas...

三步一体高效训练讲评札记全国@0所名校单元测试示范卷·英语听力二维码第一套Unit 1 People of achievement(120分钟150分)虽微信扫码单元重难点考查非限制性定语...

36.E。根据设空处前的Shortly after in 1957,she started her career in aviation和More than65years later,,Nash continues her career in the industry可知，N...

23.C细节理解题。对比四个旅游团的日期可知答案。24.B推理判断题。根据第一段“..I wanted one and casually mentioned it to my daughter one day...Afewweeks l...

49.What can we infer from Kevin Flynn's comments? A.People care about getting a discount most. B.People like pushing a trolley around a big warehouse....

【答案】 Last Sunday,I accompanied two of my foreign friends,Tom and Mary,around Chengdu so that they could better know the amazed city.We began with...

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C.Sometimes it requires you to rearrange your daily routine. D.More often than not,it's better to work out with a com- panion. E.So it's time to incre...

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are losing fur are almost always left outside These signs don't necessarily mean a pet has been hurt on purpose,but they shouldn't be ignored.If you s...

2024届衡水金卷先享题分科综合卷全国II卷语文(三)3试题，目前2024金太阳答案网已经汇总了2024届衡水金卷先享题分科综合卷全国II卷语文(三)3试题的各科答案和试卷...

<p>1、2024届衡水金卷先享题分科综合卷全国II卷语文(三)3试题</p><br><p></p><br><p>2、2024届衡水金卷先享题分科综合卷全国II卷语文(三)3试题</p><br><p><p>1、...

<p>1、2024年衡水金卷先享题 分科综合卷 全国甲卷 语文(一)2试题</p><br><p><p>1、2024年衡水金卷先享题 分科综合卷[B]语文(一)1试题</p><br><p>义。由此出发，...