2026天舟高考答案网

得分评卷人四、（本大题共2小题，每小题8分，满分16分）17.设x1,2是关于x的方程x2一4x十k+1=0的两个实数根，是否存在实数k,使得x1x2>x1十2成立？若存在，求出k的...

参考答案与评分标准数学一、选择题（本大题共10小题，每小题4分，满分40分）10.C【解析】本题考查直角1.C【解析】本题考查绝对值的概念，由绝对值定三角形性质等...

8.定义在R上的可导函数f(x)的导函数记为f'(x),若f(x)为奇函数，且f(一1)=0，当x>0时，xf(x)十f(x)<0,则不等式f(x)<0的解集是A.(-∞，-1)U(1,+∞)B.(-1,1)C.(-∞，-1...

+(2）1-3n+11(9分)故T-1.opoo,号)p(o,-.o）c(903n+1<1000解得m>333,(11分)又n∈N·,所以满足条件的n的最小值为334，0,所以-(0号号）.0i-0E,0.6分因为8邵器-0<1<1D....

=1-366×315×3_4-353+6+5)_4096-3402694347464646409640962048…11分(注：正面处理同样给分，直接写算式扣一分，最后结果没有约分不扣分)所以P,<乃，即方案二能让...

⑨2分）m图，四棱能-ABCD中AB/CDAB上AD,平面PMB上平面ABCD已知AB1,AD=CD=3，PA32PB=13点E,M分别在PD和PCB且满足PE=PD,PW=APC(0AD(1)求证：AE∥平面PBC:《2)若点M到...

'.h(x）mim=h(1)=m-1=0.方程f(x)-1=0有一解.当m>1时，h(x)=me-1-lnx-1>e-1-lnx-1≥0∴.h(x)=0无解，即方程f(x)-1=0无解综上，当m=1时，方程有一解，当m>1时，方程...

0)分教用报MATHEMATICS WEEKLY人教A版选择性必修第三册参考答案PK=180)=Q6x05=0.09.故X的分布列为则PX=)=C×()×k=0.1,2345而E-B4.0.8413),得P5≤2)=1-P(5=4)-PE=3)...

原不等式an0-水h+…2分x>0时，(x-1)ln(1-x)<n(1+x)x<0时，(x-1)ln(1-x)>ln(1+x)令f(x)=(x-1)ln(1-x)-ln(1+x)（-1<x<1且x≠0)则/'(x)=n(1-x)+1-,11+x,x(x+3)当x∈(-1...

9.ABD【解析】本题考查平面向量，考查数学运算的核心素养】由题意可得a·b=2×(-1)十1×3=1，则A正确.因为a=(2,1),b=(-1,3),所以2a-b=(5,一1D,所以12a一b1=√26，则B...

ENGLISH WEEKL芙後周報高二课标Book 6Unit5同步评估(2022-2023)第24期B★★★☆☆●On a Friday afternoon,just an hour before he'd clocked out for theyour respons...

D⊙取AC的中点O,可知O为四面体ABCD外接球的球心，外接球的半径R=】AC=13所以四面体ABCD外接球的表面积S=4πR=676π故选：A7.已知抛物线C:y2=4x,焦点为F,点M是抛物线...

19.(12分)12b-c)oa+6-2(1)求A;2)若函数Y三c8x+A)与y=n（06象的对称轴之间的最烟距离为血的值20.(12分)202年，某省实行新高考，数学设有4个多选题，在给出的，：...

答亲专期分￥教学闭报MATHEMATICS WEEKLY四川专版（人教版）九年级试卷·2022一2023学年·第5~8期6.根据已知条件，可得∠BOD=60°：然后根据同(2)因为∠B1D=65°，∠1=2...

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2023年上学期高一年级质量检测考试数学参考答案一、选择题：本题共8小题，每小题5分，共40分.在每小题给出的四个选项中，只有一项是符合题目要求的.题号1234568...

英语（六）听力原文Text 1M:Your yard impresses me the most!You must have a good gardener.W:Oh,no.A good gardener is too expensive for me.I do all the w...

6.在对一组样本数据进行分析时，小凡列出了方差的计算公式：y2=[8-2+26-x2+9-2+01-]根据公式不能得到的是()A.众数是6B.平均数是8C.方差是6D.中位数是87.某商场将...

On a hot doyBD carry on小You can try to41D.have savedinside willIn the atmosn人y1.If you take your fingers off the balloon.the airYes.running quickly...

由(y=kx+2,r+y2-2x=0.消去得(1+k2)x2+(4-2)x+4=0.所以x,+,=2-4k+所以虎+k=上+上=西+离XX:XX2=(,+2x:+(,+2)x1_2kxx2+2(,+x)XX1XX:2×2-4=2k+1+=141+k图所以k+k,为...

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A 22.What is not allowed during the festival event?A 31.Why can music play a role in dealing withA.The use of hard objects.dementia?B.The fight betwee...

EDBFQ→CmBPsinEBCxx1255所烈以=，放0正确当t=6时，BP=6×1=6cm,BQ=BC=10cm,如图，AEDPcO)此时，AE=BP=6Cm,BE=B?=10cm,∠AEB=∠EBC,所以△ABE=△PQB,故②正确；由O知，i...

讲三步一体高效训练记cord;more likely to be poor or have financial problems;and they were more likely to be singleparents.Parents can help their childr...

2版沪科八年级参考答案第3期数学周刊2LECF=2(∠EBC+∠E).因为BE平分∠ABC,所以∠ABC=2∠EBC.所以∠ACF=④当∠E=2∠0时，则24=290-5∠A解得∠=∠ABC+2∠E.又因为∠ACF=∠ABC+∠A,...

B.The cameras. C.The models. D.The volcanoes. 50.What can be the best title of the passage? A.How drones can monitor explosive volcanoes B.How drones...

D Adults are often embarrassed about asking for help.It's an act that can make people feel weak.The moment you ask for di- rections,after all,you reve...

tal energy capacity.There must be a delicate balance between meeting the energy needs of a nation and preserving the environ ment,and in the Amazon,we...

28.What phenomenon is described in paragraph 1? A.Many people prefer to read on their smartphones. B.Smartphones are equipped with eye-friendly screen...

M:There's one on Queen's Road. W:Thank you,and how can I get there? M:It's not far from here.Walk along this road and after two blocks you'll see a po...