百色市重点中学2022-2023学年数学八上期末学业水平测试模拟试题含解析

《百色市重点中学2022-2023学年数学八上期末学业水平测试模拟试题含解析》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

2022-2023
ᦪᔁὃ1.⚪ὃஹஹஹὃஹᑏᙠᔁ!ᑁ#$%ᙠᔁ&'(᪗*஺2.,-.ᑖ⌱1⚪23⚪⌱4ᫀ6#◤ᫀᑏᙠᔁᢣ9Ḅ;ᑁ#,<.ᑖ=⌱1⚪ᫀᑏᙠᔁ⚪>ᢣ9Ḅ?஺3.ὃ@ABC⚪ᓱḄ᦮F஺ὃGH6#IᔁJ⚪ᓱ-KLM஺-ஹ⌱1⚪N2⚪4ᑖ#ᐳ48ᑖP1.2019
QR
SᾙUVW#XYZSᕜ\]^_`abcd#ᱥfghi_`ḄjklZ0.00000032mm,ᦪm0.00000032ᵨo*ᦪp⊤rstḄXNPA.3.2xlO7B.3.2xl08C.3.2x10-7D.3.2x10-8x=-32.᝞vw#Xxyax+a-2
y=0Ḅ-z{#ᑣaḄ}XNPA.1B.-1C.2D.-23.~⊤Ḅ“E”ᨵᔜ^$Ḅ᤮xᔣ#Qᑡ“E”$ḄXNPA.
B-LULUcEmD#EE4.᝞#NACB=90஺#AC^CD,஺&ABḄᚖ!#LABḄ!E,=ᑣN8ACḄ¡ᦪZ
5.᪷mQᑡ⊤£#$¤t9ᐹ¦?ḄXNPA.ᦟᑁḄ3᣸4ᑡB.©ª╋¬ᑭ⊙⍝15C.ᓭ±²30°D.³´108஺#ᓅ¶53஺6.·¸AABCZj¹ᙶ᪗»'?Ḅ-¼¹½#hA48CḄᔜ⚔¿Àᙶ᪗ÁÂ-1,%ᑮAA151G,ᑣÄ\AA8CḄ?ᐵ»XNPA.ᐵxB.ᐵyC.ᐵÆ¿D.ᐵj!y=x7.4ḄÇx᪷XNP

1A.4B.±4C.±2D.28.ᙠஹஹᨬ᪷Ḅᦪ()A.1B.2C.3D.49."ᑡᔜ%&ᵨ()*+,-Ḅ.()A.(2x-y)(x+2y)B.(-2x+y)(-2x-y)C.(-x-2y)(x-2y)D.(2x+y)(-2x+y)10.^(y-5)(y+3)=y2+my+n,ᑣm,nḄ;ᑖ=()A.m=2,n=15B.m=2,w=-15C.m=—2,/i=-15D.m=-2,n=152x+211.Bᑖ)C---=3DEᑖFGHIx-11-xA.2+(x+2)=3(x-l)B.2-x+2=3(x-l)C.2-(x+2)=3(l-?)D.2-(x+2)=3(x-l)12.᝞MᙠNOIABCDAD//BC,NZ)=90°,AD=4,BC=3.ᑖ=STA,CᙊVᜧXgACZ[\]^_^`XTE,]bcBE`ADXTF,`ACXTO.fTO.ACḄTᑣCDḄZ()A.272B.4C.3D.V10ஹij⚪(l⚪4ᑖᐳ24ᑖ)13.ᙠAA5Ca,b,cᑖ=.NA,NB,NCḄpO#(a-1)2+|Z>-75I+A/C^2=0,ᑣuvIwx..14.ᙠRtMBCZC=RtZ,BC=\,AC=2,ᑣAB=.15.᝞MTDஹEᑖ=ᙠc|AB,AC±,AE=AD,%}~Ḅc|F⌕

2AABE^AACD,◤}~Ḅwᩩ.ᑏwᩩᓽ.;.______17.᝞"Mᙠ(☢vᙶ᪗pAABCḄpHᣚfᩭTAᙶ᪗.a,஺ᑣ¡2019HᣚGᡠ£ḄATᙶ᪗..18.¤¥¦'=2,a"=3,¨©.ஹBª⚪ᐳ78ᑖ19.8ᑖ,-«+1-¬஺=—20.8ᑖ᝞M1,¤¥c|ABஹCD`XTO,®¯ACஹBD,ᑣᡃ±²I᝞u᪵ḄMI“8´”.1
¶·¸NA+NC=NB+D2¹ºM2,fNCABNBDCḄ(ᑖcAPDP`XTP,»¼CDஹABᑖ=`XTMஹN.জSc|ACOḄ“8´”ᨵSTO`TḄ“8´”ᨵ¿ঝfNB=100஺ZC=120°,¶NPḄÁᦪ¿ঞfv(ᑖcvḄᐵᦋ"NCAP=NCAB,NCDP=ÅNCDB"ÆÇÈNP33¼NBஹNCÉÊËᙠḄᦪÌᐵÍ·Îᳮᵫ.21.8ᑖᵨAABCNC4B=9OAC=4,AB=8,M,Nᑖ=.O43

3CBḄÈ¿#ᙠÉ4AN+MN}ᨬ3ËḄ½#KjÌᑏ4AN+MNḄᨬ3}Z—.C11a-1+—ᐸa=32—a,a(a-2)*23.10ᑖPᵬஹÐÑᑖÒÓÔஹÕᙢË4g#ᒴØÙᔣÚÛ.ᵬḄØ¡ᜧÐḄØ¡#ᵬᑮÝÕᙢ6#ÐÞßÛ.à4gM6#ÑÙáPÚâᢚ!⊤rÓÑ4gäÐᑮÝÔᙢḄyy\xåæḄçᦪᐵ».᪷mèé#ê:1¿BḄᙶ᪗#KìâÄḄí▭ï;2ᵬஹÐÑḄØ¡.24.10ᑖPñò:x+62(1)x?—4x—2X2-x+D-x2-\25.12ᑖP᝞#ᙠÇ☢j¹ᙶ᪗»#Ḅ⚔¿ᙶ᪗ᑖÒZA-1,1,B3,1),C(2,3).

4(1)&4AABCᐵXḄ½AA4GKᑏ4G¿Ḅᙶ᪗ô(2)êA4,4GḄ☢õ.26.᝞#ᙠAABC,EXCA!-¿,AD_LBCD,EGBCG,ZE=Z1.êCN1=N2.÷ὃᫀ-ஹ⌱1⚪(2⚪4ᑖ#ᐳ48ᑖ)1ஹCூᑖ᪆௃o*ᦪpX-^*ᦪḄxp஺ý-ᦪ⊤rᡂa\10Ḅnÿ
Ḅ(lW|a|<10,n᦮ᦪ)ᦪᦪ.ூ௃ᦪ0.00000032ᵨᦪ⊤3.2x10-7,ᦑ⚪ᫀ⌱C.ூ"#௃⚪ᐵ%ᙠ'()ᦪḄ*+ᦪḄ,ᵫ./ᦪḄ01ᡂḄ⊤axlO",ᐸ45/6ᦪa75/6ᦪ10".2ஹB

5X=—Jூ᪆௃;<,>ᐭ@Aax+(a-2)y=0BC-3a+a-2=0.[y=lBCa=-l.ᦑ⌱B.3ஹDூᑖ᪆௃᪷./FᡂGHIḄ*+CJ5/FKḼM5ᩩOPᢚR᝞TUVWX75/FYᔠ[\I./FᡂGHI⌲5ᑖ᪆ᓽ_.ூ௃CA⌱⚗4./“E”ᡂGHIᦑ⌱⚗abᔠ⚪cdB⌱⚗4./“E”ᡂGHIᦑ⌱⚗abᔠ⚪cdC⌱⚗4./“E”ᡂGHIᦑ⌱⚗abᔠ⚪cdD⌱⚗4./“E”aᡂGHIᦑ⌱⚗bᔠ⚪cdᦑ⌱D.ூ"#௃e⚪ὃgḄ,./FᡂGHIḄhi()./FᡂGHIḄ*+,je⚪Ḅᐵ%.4ஹCூᑖ᪆௃klAD,mnACஹDEo'M,pqNCAB=NCDM,᪷ᐰstuḄᑨ*BqaACBwDCM,pqAB=DM,pqAD=AM,᪷sῪtuḄឋzBqᓽ_.ூ௃CklAD,mnACஹDEo'M,{NDAC=NADC=45°,'ZACB=90°,DE1AB,/.ZDEB=90°=ZACB=ZDCM,VZABC=ZDBE,:.ZCAB=ZCDM,ᙠaACB|DCM4

6ZCAB=ZCDM

7.]^ABC+AAB'CᐵCyD0E
ᦑ⌱B.ூ௃!⚪_⌕ὃ#$'☢56ᙶ᪗78Z[ᐵCᙶ᪗DᡂD0EḄḄᙶ᪗ᱯ
abcᓫ.7ஹCூᑖ᪆௃᪷M'e᪷ḄឋO
fᦪᨵZ['e᪷ghiXYᦪ
jeIJᓽ.ூKJ௃•••1[fᦪᨵZ['e᪷ghiXYᦪ]4Ḅ'e᪷F±"=±2ᦑ⌱C.ூ௃!⚪_⌕ὃ#'e᪷ḄឋO
l@1[fᦪᨵZ['e᪷mhiXYᦪFJ⚪Ḅᐵn
oᑖ'e᪷+pq'e᪷F᧕┯.8ஹAூᑖ᪆௃᪷Mᨬc]u᪷vḄw
⌲1ᑨz⌱⚗
ᓽ|ᑮ~ᫀ.ூKJ௃:==3,=3/,]ஹஹFᨬc]u᪷v

Fᨬc]u᪷v
ᦑ⌱A.ூ௃!⚪_⌕ὃ#ᨬc]u᪷vḄw
“jeᦪḄᦪF᦮ᦪ
vF᦮vjeᦪ8j|eḄᦪᡈv''Ḅ]u᪷vFᨬc]u᪷v
FJ⚪Ḅᐵn.9ஹAூᑖ᪆௃᪷Mv(a+b)(a-b)=a"b2ḄḄv
ᑨzᔲᵨ.ூKJ௃JAஹᵫCZ[8xஹy⚗Ḅ7ᦪX
ᦑᵨ'ev
ᦑ⌱⚗fBஹZ[8
y⚗ḄX
1ḄXY
ᦑᵨ'ev
ᦑ⌱⚗┯CஹZ[8
x⚗ḄXY
y⚗ḄX
ᦑᵨ'ev
ᦑ⌱⚗┯DஹZ[8
yX
2xḄ⚗ḄXY
ᦑᵨ'ev
ᦑ⌱⚗┯;

8ᦑ⌱A.ூ"#௃⚪ὃg}~@.c./45⚗b
5⚗b
Vᵨ~@.10ஹCூᑖ᪆௃ᐜ᪷⚗⚗Ḅᑣ(>-5)(>+3),᪷⚗
sḄᩩᓽ_pqmஹnḄ.V(y-5)(y+3)=/+3y-5y-15=/-2y-15,(y-5)(y+3)=y2y+m+n>y2+my+n=y2-2y-l5,m——2>n——15.ᦑ⌱CC.ூ"#௃⚪⌕ὃg}⚗⚗ḄᑣC(a+/?)(m+஻)=M+a஻+/wJ+.ca⌕⚗ᨵ⚗Ḅᔠ⚗.11,D2x+2ூ᪆௃⚪ᑖ᪆C@A+^^=3,.¡¢x-1£ᑖ¤BC2-(x+2)=3X-11-X(X-1),ᦑ⌱D.ὃ"Cᑖ@AḄ¥¦.12ஹAூᑖ᪆௃klFC,᪷§¨F_BOEᚖO~ᑖAC,ᵫᚖO~ᑖPḄឋzBqAF=FC.᪷ASAª«AFQ4¬ABOC,[\AE=BC=3,s>ᣚBᑮFC=AF=3,ᑭᵨP±Ḅ|ᐵ²pqAF=1.ᯠ¤ᙠOuAFOC4ᑭᵨ´µ*ᳮpqCDḄn.B

9C᝞FklFC,ᑣ■.■AD//BC,.ZFAO=ZBCO.ᙠAEOAXABOC42FAO=ZBCO

1014ஹ75ூᑖ᪆௃᪷MÀÁᳮ5ÃIÄABÅᓽ.ூKJ௃TNC=90஺
BC=1,AC=2,.,.AB=7BC2+AC2=VS
ᦑ~ᫀi5ூ௃!⚪F0ÀÁᳮḄὃ#
lÆÀÁᳮFJÇ!⚪Ḅᐵn.15ஹZB=ZC(~ᫀÈ1).ூJ᪆௃ᵫ⚪|
AE=AD,NA=NA(ᐳ6)
⌱ÊᑭᵨAASஹSASஹASAÌÍᐰḄᑨ
~ᫀÈ1ÏÐ
ᵫAASᑨAABEgA^ACDÏÑÒAB=ACᡈDB=ECᵫSASᑨAABE^AACDÏÑÒNADC=NAEBᡈNBDC=NCEB,ᵫASAᑨAABE^AACD.16ஹ-1ூᑖ᪆௃᪷MÓwḄÔpÕᑣᓽIÄ~ᫀ.ahூKJ௃J:l*(-1)=2,]1T---=2,ᓽa-b=2,1—1/1ஹ“—ab1z,ஹ1_...(-2)*2=----F—=——(a-b)=——x2=-1.v'-222'72ᦑ~ᫀiT.ூ௃!⚪ὃ#×ᦪvÔp
J⚪ḄᐵnFlÆÔᵨ᦮ḄØÙ.17ஹ(-a,b)ூᑖ᪆௃ÚÛÜ@ÝÞu0Ei1[ßàáâußà
ᵨ2013◀4,ᯠå᪷MᖪçèᦪḄéêÄVᣚåḄAᡠᙠḄî▲
ᯠåJ~ᓽ.ூKJ௃Að1uᐵCxD0EåᙠðÞî▲
Að]uᐵCyD0Eåᙠðñî▲
AðñuᐵCxD0Eåᙠð]î▲
AðÞuᐵCyD0Eåᙠð1î▲
ᓽAòᑮóô
ᡠ
ÝÞu0Ei1[ßàáâußà
2019+4=504è3,•••õð2019uVᣚåᡠ|ḄA+ðñuVᣚḄX
ᙠð]î▲
ᙶ᪗i

11(-a,b).ᦑᫀ(-a,b).ூ"#௃⚪ὃg}GHIḄឋz"Ḅᙶ᪗ÐᣚÑÒÓÔ⚪ÕÖ×ØÙq¾ÚÂHI5/ÛÜ1ÀÂÛÜ,⚪Ḅᐵ%Ý,⚪Ḅ¸".18ஹ1ூᑖ᪆௃᪷⚪cOlᑭᵨÞᦪḄßᑣàᔠḄ@ßᑣBqᫀ.ூ௃C•••""=2,á=3,...*+2.=(஺,")3*(d)23X32=1.=2ᦑᫀC1.ூ"#௃⚪⌕ὃgÞᦪèḄßÍéḄ@ßßᵨ
ᐵßᑣêë;ìÉÊÐ,⚪Ḅᐵ%.tஹ⚪(ᐳ78ᑖ)19ஹ3ூ᪆௃ì=2+1=320ஹপª«î᪆dফজ3,4ঝNP=H0஺dঞ3NP=NB+2NC,ᳮᵫî᪆.ூ᪆௃পᵫtuᑁu|BᑮNA+NC=180஺-NAOC,ZB+ZD=180°-ZBOD,ᵫH⚔u
sBñUNAOC=NBOD,6òNA+NC=NB+NDফজP±AC¡Ḅ“8”ᨵ3/Oo"Ḅ“8”ᨵ4/dঝ᪷(1)Ḅà÷Mo"“8ø”4NP+NCDP=NC+NCAP,No"“8ø4ZP+ZBAP=ZB+ZBDP,.s
Bᑮ2NP+NBAP+NCDP=NB+NC+NCAP+NBDP,ᵫAP|DP,u~ᑖPBñIJZBAP=ZCAP,NCDP=NBDP,ùòNP=L(/B+NC),ᯠ¤;NB=100°,2ZC=120°>ᐭᓽ_dঞXঝḄª«@5᪵Bᑮ3NP=NB+2NC.ூ௃C(1)ᙠF14ᨵNA+NC=180஺-NAOC,ZB+ZD=180°-ZBOD,VZAOC=ZBOD,...NA+NC=NB+NDফCজP±AC¡Ḅ“8ø”ᨵ3/C

12pcB"oo"Ḅ“8ø”ᨵ4/:No"“8ø”4ᨵNP+NBAP=NB+NBDP.,.2ZP+ZBAP+ZCDP=ZB+ZC+ZCAP+ZBDP,VAP>DPᑖi~ᑖNCAB|NBDC,.NBAP=NCAP,ZCDP=ZBDP,.,.2ZP=ZB+ZC,VZB=100°,ZC=120°,AZP=-(ZB+ZC)=-(100°+120°)=110°22ঞ3NP=NB+2NC,ᐸᳮᵫ,CVZCAP=-ZCAB,ZCDP=-ZCDB,3322/.ZBAP=-ZCAB,ZBDP=-ZCDB,33Mo"“8ø”4ᨵNP+NCDP=NC+NCAP,No"“8ø”4ᨵNP+NBAP=NB+NBDPAZC-ZP=ZCDP-ZCAP=-(NCDB-NCAB),32NP-NB=NBDP-NBAP=-(ZCDB-ZCAB).3.2(ZC-ZP)=ZP-ZB,.,.3ZP=ZB+2ZC.ᦑᫀC(1)ª«î᪆d(2)জ3,4ঝNP=110஺dঞ3NP=NB+2NC,ᳮᵫî᪆.ூ"#௃⚪ὃg}tuᑁu|*ᳮCtuᑁu|,180°.Ýὃg}u~ᑖPḄ*+.3221ஹ¨Fî᪆y

13ூᑖ᪆௃¨A"ᐵ'BCḄHI"AAAXBCo'"H,¨A'MJ_AB'"M,XBCo'"N,eýAN+MNᨬÿ
AN,✌ᐜᵨAHḄ᧕ACH^AA'NH,AN=AC=4,ᯠNM=x,ᑭᵨᳮNMḄA'MḄᓽAN+MNḄᨬ!.ூ$%௃᝞()A*ᐵ,BCḄ-.*A',A'A/BC0,*H,1)A'MJ_AB,*M,/BC0,*N,23AN+MNᨬᨬ!AMḄ.A'
AN,ᙠRtZ\ABC6AC=4,AB=8,•BC=VAB2+AC2=V82+42=475V-ABAC=-BCAH22,8x48••AH=—-----4A/55VCA±AB,A'M±AB,.,.CA/7A'M.,.ZC=ZA'NH,ᵫ-.Ḅឋ9AH=A'H,ZAHC=ZA'HN=90°,AN=A'NᙠaACH:ANH6VZC=ZA'NH,ZAHC=ZA'HN,AH=A'H,/.ACH^AA'NH(AAS).*.A'N=AC=4=AN,NM=x,ᙠRtAAMN6AM2=AN2-NM2=42-x2=\6-x2ᙠRtZiAA'M6AA'=2AH=1^^,A'M=A'N+NM=4+x5.,.AM2=AA,2-A'M2=-(4+

14-ö4+X÷2=16-X2J|x=M1232ùAN+MNḄᨬúû=A'M=A'N+NM=4+—=—55ூ௃!⚪ὃ#$ᨬýþÿ⚪ᑭᵨᳮ⚪Ḅᐵ.22a2+a;12ூᑖ᪆௃ᐜᑭᵨᑖ#Ḅ$%ឋ'ᓄ)ᑖ#ᯠ+,a=30ᐭᓽ345ᫀ.,_ci"-1a—1ூ9௃:#=-~-7a-2a[a-2)(a+l)(a—1)a(a—2)——---------------------------X-------------------aA2a—1B஺=3D:#=3?+3=12ூFG௃%⚪H⌕ὃKᑖ#Ḅᓄ)LMNOᑖ#Ḅ$%ឋ'⚪Ḅᐵ.23ஹ(1)B(1,0),BḄT▭VWᵬஹYZ[\]1^D_⍗a(2)6km/h,4km/h.ூᑖ᪆௃পZ[_ᔣjkB_⍗Dy=0%⚪3a2(2)ᑖ᪆mn3oZ[pqᑮ_⍗ᵨ1^Dᵬᵫ_⍗Fᑮtᙢvᵨ]^DYxyz{|⌕ᵨ1^D}~3ᑡ|.ூ9௃(1)AB᪆#y=kx+boFP(0,10),(-,—),421,,15Ak+b=—0ᐭ442,8=101=-104b=10y=-40x+10,By=oDx=i,..FBḄᙶ᪗(1,0),

15FBḄVWᵬஹYZ[ᑖpஹtZᙢDq+\]1^DZ[_⍗.ফᵬḄ஺ᑗ஻஻Ḅ"#$bkm/h,552ᵫo^DDᵬᑮtᙢᑣYx1^D{|ᵬv◤⌕-1=^D333(a+8)x1=10•,J,2b=-a[3a=6.<,,=4ᵬஹYḄᑖ6/஻ஹ4km/h.ூFG௃%⚪ὃKAᦪmnឋ'5⚪D⌕¢VᦪVW.D⌕ᑖ᪆ᔜ▤zḄ{|ᐵ¥¦ᑡ|.ூᑖ᪆௃(1):#ᐜ§ᑖ¨ᑖ©Ḅᑖ#ªᢥᑖ©ᑖ#¬ᑣ®k¯°ᓽ34ᑮ±²a(2):#³´µZ⚗®k§ᑖ¦ᑭᵨᑖ©ᑖ#ᑣ®k¯°·ᑖ+ᓽ34ᑮ±².ூ9௃(1)¸&——+x-4x-2x+6—2(x+2)(x+2)(%-2)~x+2(x+2)(x—2)1:---------«x+2'(2)+2xx"-1x2+2x4-1x2-x2xx2-l(x+1)2x(x-l)2x(x+l)(x-l)_x+l—2ூFG௃

162⚪ὃ=>ᑖ@ḄAᔠCDEFGHCDᑣJ%K⚪ḄᐵL.25ஹ1
)(N%᪆PC,2,-3
.2
S^=4BiClூᑖ᪆௃1
ᑖQ)*A,B,Cᐵ,xRḄ-.*1✌STU
ᓽ;2
WXYZḄ[\:]᪷_XYZḄ☢a@ᓽᑮcᫀ.ூ$%௃%e1
᝞(eAA4GᡠP*Ḅᙶ᪗e2,-3
2
᪷_⚪iA4=4,MBC\A4jḄ]2,,,,SM,4G=]x4x2=4.ூ*k௃K⚪l⌕ὃ=)(——R-.oᣚEFGHR-.oᣚḄq:ឋ9r_2oᣚḄ-s*J%⚪ḄᐵL.26ஹtN%᪆.ூ%᪆௃u⚪ᑖ᪆eᵫAD±BC,EG±BC,ᑭᵨᚖWḄqNEGC=NADC=90஺,ᑭᵨyz{ḄᑨEG஻AD,ᑭᵨyz{Ḅឋ9}N2=NE,Z1=ZL~NE=NLᣚ.u⚪%᪆eteVAD±BC,EG1BC,:.ZEGC=ZADC=90°.EG஻ADAZ2=ZE,Z1=Z1,VZE=Z1,.,.Z1=Z2.ὃ*eyz{Ḅᑨ/ឋ9.