2022-2023学年贵州省铜仁市中考数学专项突破仿真模拟试卷（一模二模）含解析

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2022-2023
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82022-2023
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ᓄ⌕Ḅᓤ10□ᐝ᯿ᑮḄ᜜ᜋ"a᝞F.73'23.*12ᑖ',-⌴/0123456ᦔ᳛9ᑜ;4ஹ8?@ABḄCᘤEᩭGHIᱥKLMNAACᘤEOMNBACᘤEMᜩPGH20ᔴRS3NTACᘤEU2N8ACᘤEMᜩᐳGHIᱥ460ᔴ.*1'XMNAACᘤEUMNBACᘤEMᜩᑖYGHIᱥPᔴ"*2'MN/ACᘤE[\3]ᐗMN8ACᘤE[\2]ᐗ/09ᑜ_;4ஹ8?@ABḄCᘤEᐳ20N`abcMᜩGHḄIᱥdef1800ᔴg᪷ij⌕XXk/ஹ8?@CᘤEᑖY_;PNᡠ◤nᵨ"nᵨpP"qஹ*rᜧ⚪bᑖ12ᑖ'24.*12ᑖ'᝞vwLxR3Cᑁ|fOO,T8pḄNC/BḄᑖBCfD,஺஺fEbcEB,dNBEF=NCAE,Ḅf.*1'XEFp஺஺Ḅᑗ*2'eBF=IO,EF=20,XḄU4஺Ḅ.roJBFஹ*rᜧ⚪bᑖ14ᑖ'25.*14ᑖ'᝞vᙠx/BCN4CB=90°,8C=6«cm,4c=12an.pC4ḄP¡Ck¢jM£2cCḄ¤¥¦C4§ᔣᒴ¤HjCP16ªxCP038⚓/¬61⚓

38*8ஹ஺ᙠZC®¯'°HḄ5±1x£x48C³xCP0ᚮµ¶ᑖḄ☢¸1S.*1'¹஺ºᙠxRBCᑁ¶X»xZBC³xCP0ᚮµ¶ᑖḄ☢¸S*ᵨ½xḄ¾ᦪÀ⊤Âd⌕XᑏxḄÄÅÇ'*2'¹஺ºᙠ48X»xNB஺³xCP஺ᚮµ¶ᑖḄ☢¸SḄÅ*3'¹஺ºᙠx/BCᑁ¶X»xZBC³xCP஺ᚮµ¶ᑖḄ☢¸S*ᵨ½xḄ¾ᦪÀ⊤Â'.39⚓/¬61⚓

392022-2023
ḕὃᦪ⚗ẚᔁLஹ⌱⌱*rᜧ⚪ᐳ10ÊË⚪MË⚪4ᑖᐳ40ᑖ'r⚪MË⚪ᙳᨵAஹBஹCஹDÎÊᜓ⌱ÐᫀᐸÓ⌕ÊpÔÕḄgÖ×ÔÕÐᫀḄØBÙÚᙠÛÜḄÐ⚪ᓱ.1.2021Þ2ᨴ25àᐰâῃäåæ¬ç⊤èᜧéᙠêëìᙠᜧéíîïð“ᡃâῃäåæᡊÄô2ᐰ☢õᑭ.÷pâEøḄùᜧᐝ₫pâḄùᜧᐝ₫pûøüḄùᜧᐝ₫ý”ÿ᪗9899᩟ᐰῃ⌼Ḅ᜻.98990000ᵨ!ᦪ#⊤%&')A.9.899X106B.98.99X107C.9.899XIO8D.9.899XI07ூᑖ᪆௃!ᦪ#Ḅ⊤%./&“X10”Ḅ./ᐸ1஻&᦮ᦪ.45”Ḅ78⌕:;<ᦪ=ᡂ஺8@ᦪABCDEF஻Ḅ7G@ᦪABCḄFᦪHI.J<ᦪ7K108”LM᦮ᦪ.N:98990000=9.899X107.ᦑ⌱RD.2.᝞TLU☢&WXYZ[ḄMY\]^Ḅ_`TL')ூᑖ᪆௃aᑮcM☢:ᡠeᑮḄT[ᓽg.NR᝞Tᡠ%ḄMY\]ᐸ_`TLh[h[iᜮᨵᩩmᔣḄop.ᦑ⌱RA.3.ᨵ6FqrᦪstᑖᦪᑖuLR125,130,130,132,140,145,ᑣwxᦪyḄ1FᦪL')A.130B.132C.131D.140ூᑖ᪆௃᪷y1FᦪḄ{|}Nᓽg.~40⚓/61⚓

40NRwxᦪyc@ᑮᜧ▰ᑡᜐᙠiᜮᙢFḄiᦪḄᙳᦪ&■=131,2ᦑ⌱RC.4.ᑡW/M4ḄL()A.|-3|+tan45°=-2B.Cxy)54-(A)5=10xyC.(ab)2=a2+2ah+b2D.x3y-xy3=xy(x+7)(x-y)ூᑖ᪆௃ᑭᵨᑖ/Ḅ◀#ஹ/#G/#ᑖN/ஹZḄYZᦪ}Nᓽg.NRA.|-3|+tan45°=3+1=4,ᦑNᔠ⚪{558.(1)5+(A)555.^5,5.y^10ᦑ8ᔠ⚪{=xy4=x>=yjyyxC.(a-b)2=a2-2ab+b2ᦑCᔠ⚪{fD.x3y-xyi=xy(x2-/)=(x+y)(x-y),ᦑ஺ᔠ⚪{ᦑ⌱RD.5.p48ஹBCஹCDஹEG᝞Tᡠ%Zl=Z2=80°,Z3=40°,ᑣᑡ¢£┯¥ḄLB.ZEBF=40°C.N/CG+N3=N2D.EF>BEூᑖ᪆௃᪷ypḄᑨ5ஹ§⚔ZHW©YZ[Ḅ᜜Z5ᳮ}Nᑨ¬ᓽgeN.NRVZ1=Z2=8O°,'.AB//CD,ᦑM4ᔠ⚪{;VZ3=40°,/¯ᕷ=N3=40°,■:NU/EBF+/EFB,N£8/=40°=/EFB,~41⚓/61⚓

41'.EF=BE,ᦑ8M4ᔠ⚪{ᦑ஺┯¥ᔠ⚪{VZ2LḄ᜜ZAZFCG+Z3=Z2,ᦑCM4ᔠ⚪{Rᦑ⌱RD.6.ᵨ᜜[ஹᜧ@±ᐰHIḄ²ᡈ´²☢T[µ¶·¸¹ºᶇ¼◣ஹᚮ¿ᙢÀᡂᱏwÂL☢T[Ḅ╨Ä.ÅÆᏝÈᵨᑡɲ᜜[ஹᜧ@±ᐰHIḄ²ᙢẈᙠ᦮Ḅᙢ☢Ë╨Ä')A.WXYZ[B.M.[C.MÌX[D.MÍX[ூᑖ᪆௃MDX[╨ÄᨵYᩩÎRজXÐHWঝ⚔Aᐳঞᙠ⚔AᜐᔜMDX[ḄᑁZºÖ&360°.ᑨ¬²ᡈ´²T[ÈᔲÈØ╨ÄÙ◤::¶ᙠq⚔AᜐḄ´ZÈᔲ᪀ᡂᕜZÝÈ᪀ᡂ360°,ᑣ▊ßÈص☢╨ÄIºᑣÈ.NRZ⌱⚗WXYZ[ḄᑁZ&60°,360°+60°=6')ᡠá6WXYZ[gáᙠ⚔Aᜐ±ᡂᑁZºÖWâ360°,ᔠ⚪{B⌱⚗M.[ḄᑁZ&90°,360°+90°=4')ᡠá4M.[gáᙠ⚔Aᜐ±ᡂᑁZºÖWâ360°,ᔠ⚪{C⌱⚗MÌX[ḄᑁZ&108°,360+108°=3ÅᡠáMÌX[Èᙠ⚔Aᜐ±ᡂ3ᑁZºÖWâ360°,ᔠ⚪{஺⌱⚗MÍX[ḄᑁZ&120°,360°4-120°=3')ᡠá3MÍX[gáᙠ⚔Aᜐ±ᡂᑁZºÖWâ360°,ᔠ⚪{ᦑ⌱RC.7.W/x«p-3x/0ḄNãᙠáᦪä⊤%1M4ḄL')[7-2x<5A.01234B,01234~42⚓/61⚓

42—6_-1_►—~~1_►C.01234D.01234ூᑖ᪆௃NiᐗW/æᙠᦪäËçèiW/ḄNã.N:(9-3x>°®17-2x<5ঝNW/জeRx<3,NW/ঝeRxel,᝞TᙠᦪäË⊤%W/জஹঝḄNãgðᡠ}W/xḄNãLRlWx<3.ߟτ—•---1---6»►01234ᦑ⌱RB.8.ñðpò=ó+2õஹöஹY÷▲ᑣpù=ó+2Gúᱥpù=f-2x+3ḄüAᦪ&()A.0B.1C.2D.1ᡈ2ூᑖ᪆௃ᐜᑨ¬᝕ḄMÿឋ
.
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439.᝞7
ᙠRtA48C9,9c=90°,48=10,BC=8,ᢥ<ᑡ>?@7:>?1BZ.ᙊD
EF/CḄG.HI@JᑖZCஹAB\]DஹE.>?2ᑖB஺ஹE.ᙊD
ᜧFNOEḄG.HI@J
OJF2>?3@PAMBCFF.ᑣ/RḄG.ShC.473D.6Tூᑖ᪆௃ᑭᵨXY@7(ᑮ“\]ᑖNB4C,ᡝ@RF

᝞7
᪷`a]ᑖḄឋb(ᑮF"=FC,᪷`cdeᳮghi/C=6,j“'=x,ᑣF”=x,ᯠmᑭᵨ☢op(ᑮNX10x+NX6X=LX6X8,(X=3,ᑭᵨcdeᳮghᨴrḄG.222ᵫ@p(tr]ᑖ/8/C,iF]dFHL4B\H,᝞7
R]ᑖNB/C,FHLAB,FCA.AC,'.FH=FC,ᙠ*4BC9
VZC=90°,AB=[0,BC=8,,
,/,C=VAB2-BC2=6,jCF=x,ᑣF
=x,,SAABP^S2ACF-S>ABCI.♦.JLX10X+NX6X=LX6X8,(X=3,222ᙠRtCF9
AF=JA\2}F2=J62+32=3ᦑ⌱B.144⚓/461⚓

44B10.~$ᱥy=ax-hh2+4#xᨵON-1,0
,B3,0
,$ᱥy=ax7?-2+4#xḄS4,0
,ᑣḄSA.5B.-1C.5ᡈ1D.-5ᡈ-1ூᑖ᪆௃ᐜᑭᵨᦪḄឋb(ᑮO$ᱥḄ
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(ᑮḄ.•..$ᱥy=ax-A
2+%Ḅ.x=஻
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]mḄ.S4,0
,ᑣ"?=4--1
=5B3,0
]mḄ.S4,0
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ᑣx+IWO,x+1(xW-1.ᦑxK-1.12.ghS«+¬SV3-V2=3ூᑖ᪆௃ᐜ᪷ᓄ.ᨬ°᪷
ᯠmᑭᵨ]±²gh.³=3ᢚ3ᡃVs-V2=3S¶&SV3-V2145⚓/461⚓

45=3X(3-2)=3.ᦑ¨ᫀ.3.13.¸ᵬஹºO»¼P½¾¿ḄᡂÀ(ᓫÃÄ)᝞<ᵬ6,7,8,9,10º7»8,8»8»9.ᑣᵬஹºO»P½ᡂÀÅÆÇÈḄº(ᵬᡈº).ூᑖ᪆௃᪷`±Ḅe¡
±ÉEᦪ`ÉÇÈᓽÊ.ᵬḄ]ᙳᦪ.6+7+8+9+10=8,5ºḄ]ᙳᦪ.7+8+8+8+9=8,5sᵬ2=Ì[(6-8)2+(7-8)2+(8-8)2+(9-8)2+(10-8)2]=N(4+1+0+1+4)5=2,Sº2=ᔁ[(7-8)2+(8-8)2+(8-8)2+(8-8)2+(9-8)2]=N(1+0+0+0+1)5=0.4,ᵬ2>sº2,•••ºḄᡂÀÅÆÇÈ.ᦑº.14.᝞7
ÏÐ஺Ḅ⚔/ᙠÒÅÓᦪy=KḄ7
ÏÐ/8OCḄ☢o.3,ÔDX=3146⚓/461⚓

46ூᑖ᪆௃᪷`ÒÅÓᦪÕᦪ4Ḅ×Ø¡(i¨ᫀ.ÏÐ/3O஺Ḅ☢o.3,M=3,0,'k>0,'.k=3,ᦑ3.15.᝞7ᡠßàhá⊤ß7
¸ãᐭ1,ᑣãᐭḄåæ66|Oᐭx|-►Qᓝ2r+3]—►|Ry>9||T|ߟ►[OW]XxḄZ[1\]^_Oᐭ◄—ᔲூᑖ᪆௃ãᐭxḄ.1,ghi᜛=6,⌱éᔲḄá1ãᐭxḄ.7,ghiy=66,⌱éḄá
ãᐭᓽ.x=lí
y=l+2+3=6,V6<9,...⌱éᔲḄá
.,.6+1=7,x=7í
49+14+3=66,V66>9,...⌱éḄá
ᦑ66.147⚓/461⚓

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2N3N
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BúûᦪøḄ᦮ᦪýᑖþÿḄ᦮ᦪIᑖᦪᑖḄᑖ2Ḅ"”1ᑖ1,ᯠᓽᑏ"⚗Ḅᦪ.ᑡᦪ"1#2—,3#4#…ஹ24816•••'ᑡᦪ(ᑏᡂ2#4*+…"⚗n-^—,2nᦑn-^-.2n17.᝞/012"1Ḅ34/8C஺67/9:┐<=30°ᑮ/▢஺஺|ḄᙢBᑣᨩEᑖூᑖ᪆௃IJZE,᪷L<=ḄឋNOPᵫR30STḄUTVT4⊟ឋNWDE=---,ᵫ/(WSᨩEᑖ=2S34N5CQ-S4DEB1Z0[ᐵᦪ]^ᐭo`ᓽ.᝞/48⚓/b61⚓

48IJZE,᪷L⚪de=40=I,ZBi=Z£>=90°,/ᕒ48i=30°,ᙠRtA/lBiEhRt/\ADEi,rAE=AE'AB[=AD'r.Rtuv81EyRtz^/DE(HL),VAB\AE=ZDAE=—ZBiAD=30°,2DE=1,Wr)E=ADV33_•,•S1xoEBi=2S/VIOE=2Xm0ADXDE=y'^,23rSᗗEᑖ=2S34/sc஺-S14v஺1Z=2XI-=2-2^^OOᦑ218.᝞/EஹFᑖ3443஺Ḅ1/8ஹ3cḄ74E=8IJCEஹDF,[7G,IJ/G,34Ḅ12"2.ᑣZGḄᨬ]"ூᑖ᪆௃᪷L34ḄឋNW/B=8C=2,NB=NDCF=9G,ᯠᑭᵨ“1T1”uDChuCBEᐰ᪷LᐰVT4T[hTḄT[WNQGC=90°,vGᨬ:GḄᙢB᪷L¡ᳮW£¤.᝞/1,¥CDḄi7H,IJGH,49⚓/b61⚓

49ᙠ34/BCZiAB=BC=2,ZB=ZDCF=90a,•'AE=BF,:.BE=CF,ᙠDCFhC3Ei'CD=CB>ZDCF=ZB-,CF=BE'./\DCF^/\CBE(.SAS},'.ZCDF=ZBCE,■:NDCE+NBCE=9஺",.NCDF+NDCE=90°,:.NCGD=90°,.,.7Gᙠ(஺C"Uªhᙊ᝞/2,IJNC,BD[\]O,¥஺CḄi7ᵫ¡ᳮWZC=*7^=2&,,:Eஹᑖ34N8C஺Ḅ1/8ஹ8cḄ7,50⚓/b61⚓

50/2...7Gᙠ(“"ᙊC”"®ªḄ#ᙊ¯°7G±஺²ᔠ:4Gᨬ4µ:AG=A0=^AC=y/2<ᓽ/GḄᨬ]=⊟.ᦑ⊈;Vஹ¹⚪º»ᜧ⚪ᐳ4¾⚪¿⚪10ᑖᐳ40ᑖ⌕ᨵ⚪Ḅ⌕ÂÃZ19.º10ᑖZÆÇÈÉÊËÆÌÇÈḄÉÊ¿ÍÉÊḄÎÏ16ºÑᐗZ.°¿ÍÓÏ"22ºÑᐗZ:¿ᨴ4ÍÉÊ.᪷LÕÖ×Ø᝞ÙÚÎ×ÛÏ.ÜÂÕÖÝÞWᑮß¿ÍÛÏḄàᵨáºÑᐗZ±ᨴâxºÍZºxä4ZÆÌåᦪᐵæḄçèᦪL᝞é⊤X4567800.511.52º1Zíî᪷LᡠðᩞᧇhóiᡠôḄåᦪeõᑏ“±xḄᐵæöw=ø-2ºx/4Z.:º2Z¿ÍúÓÏ"22Ñᐗûὃ⇋ᐸÿᡂ
ᨴᑭ>=-yi-x,᪷ᩩᨴ!xx>4$%&'ᑭ(ᑭ)%&(ூᑖ᪆௃1ᵫ⊤1ᦪᑨ456xᡂ7ᦪᐵ9:2᪷<=>ᨴᑭ᜛=-yi-x,ᑭy6x@Ḅᐵ9ᑭᵨCD7ᦪḄឋFᑭGHᨴ!.J>1ᵫ⚪LMN>஻6xᡂ7ᦪᐵ9PQ=RRZW0,Vx=4'yi=0,x=6'yi=LY51⚓/]61⚓

51.j4k+b=0,16k+b=lJc>d2,b=-2vi=—x-2(x4).2ᦑyi=/x-2(x24).(2)ᵫ(1)c>yi=-^x-2(x24),:.y=[22-(A-x-2)-16]x=-Ax2+8x=-A(x-8)2+32,>.x=8'op=32,q>ᨴ!$8'ᑭ$32rᐗ.20.(10ᑖ)᝞uAB[CD\]O,ᙠwZOC6w80஺{ᨵ}ᑡᩩ>জOC=஺஺,@AC=BD,ঞN/=N8.ᙠᩩ{⌱$ᩩ$ᩩᩭḄḄ(◤ᑏ-Ḅ⌱).(1)⌱Ḅᩩ$জஹঞ$(2):(2)Ḅ.ூᑖ᪆௃(1)᪷ᐰḄᑨᓽM⌱ᩩஹ;(2)ᵫ⌱Ḅᩩw4OC¢w80஺ᓽMc.(1)J>ᵫ44S,⌱Ḅᩩ)>জঞ)ঝᦑজঞঝ(qᫀ¦):(2)>ᙠwZOCHw80஺{'NA=NB•A0C=ZB0D>OC=ODL/\AOC^/\BODCAAS),Y52⚓/]61⚓

52'.AC=BD.21.10ᑖ«᪥®¯⚪$“■²³´N%&”Ḅ¶·¸¹º»ᑖᐜ½¾¶·¶·¿ᔁPÁºÂóºJஹ8>ÄźJஹC>Æ
ºJஹD'¦ÇºJÈÉ⌕ᐜ½ËÌËᐸ{ḄÉιÏи᪵ḄÒ=᪷¶·ÓÔᑴᡂ᝞uᡠצØÙḄ⚣ᦪᑖÛ⊤H⚣ᦪᑖÛÜÒu᪷ÝÞßàq}ᑡᡂá:É⚣ᦪ⚣᳛A200.4B15bC100.2Da0.11⚣ᦪᑖÛ⊤{5,b=0.3,ä⚣ᦪᑖÛÜÒu⊡ᐙØÙ:2çè᪥ᨵᐜ½100é᪷¸᪵¶·Óêëè᪥“óºJ”H“ÄźJ”■²³´Ḅᐜ½ᐳᨵ%&é(3ᙠ“óºJ”■²³´Ḅᐜ½{«íᨵ5ᐜ½ᐸ{3ᵱ2᝕ðᑜᙠ5ᐜ½{Ïи⌱oᐭ■²óôὅö÷ᵨᑡ⊤ᡈù᪛ûuḄÒᡠ⌱ᐜ½{ü&ᨵ᝕½Ḅᭆ᳛.ூᑖ᪆௃1᪷⚣᳛=M᦮Mðëc]ᦪÿ
஺ஹbḄ⊡ᐰ⚣ᦪᑖᦪ;2᪷᪵“”“"#”ᡠᓰḄ&ᑖ"'()1000,“”“"#”Ḅ,ᦪ-3ᵨᑡ⊤2⊤34ᑗ67
8Ḅ9:;<=>
?@ᐜBCDᨵ4@᝕BḄᭆ᳛.J53⚓/61⚓

53Pপ204-0.4=50,,a=50X0.1=5,6=154-50=0.3,ᦑ5,0.3-2
1000X0.4+0.3
=700,TPU᪥1000ᐜB“”W“"#”■YZḄᐜBᜧ\ᨵ700,;3
ᵨᑡ⊤2⊤34ᑗ67
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