2022-2023学年湖南省怀化市中考数学专项提升仿真模拟试题（一模二模）含解析

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2022-2023
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19᝞Ëa»zq8c¬Ìᑮ¢oᱥqgᑗAḄ᪆!y=-x+p,¢oᱥqὶ¤U-22X3᦮ᳮjx+p-3=஺++21A=32-4(/?-3)=0,Ôᵨ,71;»᜛=1½ᐭf—3x+p—3=0,x==,?1s»x=×½ᐭy=-x2+21+3y=Ø315ᓽ^»Ḅᕜ!ÛAPḄᙶ᪗!ÜÝ)33»Þ=1½ᐭy=-x+3y=1539ᑣßA᳘à_:=,424ã!§PEF!VῪzPE=FE=)*^=W^428ᑣ§PE/7Ḅᕜ!2(a+1)4(3)ᙠ.æW8(3,0),C(0,3),aG(m,-w2+2/n+3),N(l,஻)ë8c!¬®¯qA᪷²³ì+1=3,m=2,ᑣGᙶ᪗!(2,3)ëBC!¬®¯qAî᪵ᑭᵨ²ᙶ᪗³"+3=1ᡈð-3=1,ᵨ=-2ᡈñ=4ᑣGᙶ᪗!(-2,-5)ᡈ(4,-5)ᦑGᙶ᪗!(2,3)ᡈ(-2,-5)ᡈ(4,-5)ᫀG14⚓ᐳ41⚓

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212022-2023
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4.<=>?Ḅ)@᝞ᡠᑣB=>?CD!D.ᫀ16⚓ᐳ41⚓

222x+l>35.Lᨵ4NOPḄQRᙠᦪT⊤Ḅ)3%-5<1C--0---2PD-6h-3^7.ᙠ᪥\]Ḅ^_`abcdef᪷hijkᡠlḄᑖᦪᑴop᝞6⊤q:+ᙳᦪᦪtᦪ.u8.58.38.10.15᝞xyᣵ<ᑖ(<ᑖᑣ⊤ᦪh{Lᨵ|}~ᓄḄ!A.+ᙳᦪB.tᦪC..uD.ᦪ8,ᦪ2m+6!x2+1-m!xcᦪᑣmḄ!A.m=-3B.m=lC.m=3D.m>-39.᝞ᙠABCDAD=6,AB=4,EஹGஹHஹFᑖᙠABஹBCஹCDஹAD±,AF=CG=2,BE=DH=1,P&-EFஹGH0PEஹPFஹPGஹPH,ᑣ▢☢¡Z^PEF(4PGHḄ☢¡(!4¤!A.7B.8C.12D.14ᫀ17⚓ᐳ41⚓

2310.¥¦§ᱥ-(&-/ᙠ&*ᙶ᪗¬Ḅ᝞ᡠ§ᱥ-Ḅ®¯&-°=-1,P\xi,!ஹ2X2yz'§ᱥ-TḄP3±”!&-/TḄ-1Vxiy2>y3B.y2>yi>y3C.j^3>yi>yiD.^>^2>>ஹ@A⚪B11.y=2yix-5+15-x+2,ᑣx=,y=.l12.ᑖQ¹N஻-4=.13.᝞»¼Ὺ¾60cm,⚔*120஺Ḅ4Ὺ)*ÁÂOABÃÄ<ḄᡧOCD,ᵨÆÃ6ḄᡧÁÂÇᡂ<ᙊ┵ḄË☢LᨵÌÍὑ!ᑣBᙊ┵ḄÏcm.O14.¥¦AABCḄᕜ¾20,AABCḄᑁᑗᙊÒÓAB3ᑗ¤D,AD=4,ÔÕBC=.415.᝞ᙠ&*ᙶ᪗¬&-y=6-xÒÖ×-Ø=—x>0
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25A21.;

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272022-2023
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28ூᑖ᪆1ᵫTU1UVWXYE;FGD&'=>.ூZ[௃VZDPF=ZBAF,0.AB//PDBE;FGD&'=>C.ᦑ⌱A.⚪]⌕ὃ^_`3a=>'Ḅᑨ"ᳮ[⚪cḄde4[f_⚪Ḅᐵh.3.iᑡklḄ4BCA.3a2+5a2=8a4B.a6,a2=a12C.a+b
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Aஹ#n=8a2,ᦑA⌱⚗┯Bஹ#n=a8,ᦑB⌱⚗┯Cஹ#n=a2+b?+2ab,ᦑC⌱⚗┯Dஹ#n=1,ᦑD⌱⚗.ᦑ⌱D.$
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320.AE=CH,ᙠ÷/£■ûaZkCG¬ZE=CH",0.EG=FH,EGHF■:4PEFḄḄ஻ᑮEFḄ:.APEFAPG”Ḅ☢=gxEGHFḄ☢EGHFḄ☢=4x6-gx2x3-yxlx)6-2*-yx2x3-yxix)6-2*=24-3-2-3-2,=14,"EFAPG”Ḅ☢=gx14=7.ᦑ⌱A.10.234ᱥ/ᙠ89:ᙶ᪗=>Ḅ?@᝞?ᡠC4ᱥḄDEFGH=-1,P\)xiyi*ஹPi)JK2*4ᱥLḄPy)X3g*/LḄN-IVxi2ஹ”ḄᜧUᐵ=G)*A.y]>y2>K3^.yi>y\>y3C.y3>y\>y2K௃ூYZ[ᫀ௃C[ᫀ^27⚓ᐳ41⚓

33ூᑖ᪆௃cd)-1,%*G4ᱥḄ⚔᪷hiᦪḄᓫlឋ4ᱥnoᔣqᓽstu%>%,v᪷hwxiᦪḄឋywxiᦪ?@ᓽstu᜜>{>J|}ᓽstuJ<~-1L4ᱥyXḄᜧ}U-1<᳝y>y'0t2%<<•ᦑ⌱c.⚪ὃwxiᦪḄឋyஹiᦪḄឋywxiᦪḄ?@⚪Ḅᐵcᐘ)-1,%*G4ᱥḄ⚔᪷h)wx*iᦪḄឋyuG.wஹ⚪11.y=2>Jx-5+yj5-x+2,ᑣx=,y=.ூYZ[ᫀ௃জ.5ঝ.2x-5>0,ூ௃ᵫ⚪£tdSctx=5,y=2,5-x<0ᡠx*=25.ᦑ[ᫀG25.12.ᑖ¤¥஻?2-4=.ூYZ[ᫀ௃)§+2*)§—2*[ᫀ^28⚓ᐳ41⚓

34ூᑖ᪆௃ª᪷h«¬¥|¤¥ᑖᓽs.ூ௃m~-4=(m+2)(w-2),ᦑ(§+2)(§-2)⚪ὃᑭᵨ«¬¥|¤¥ᑖ⚪ᐵᙠ°±²³«¬¥.13.᝞?´9µῪ·G60cm,⚔:G120஺ḄῪ¹:º»OAB>¼u9½ḄᡧOCD,ᵨ¼qḄᡧº»¿ᡂ9½ᙊ┵ḄÃ☢(ÄᨵÆÇὑ)ᑣÊᙊ┵ḄGcm.ூYZ[ᫀ௃2072ூᑖ᪆௃ËOÌOELABE,᪷hῪ¹:ḄឋytᑮOEḄ·vᑭᵨÍ·¬¥ÆÎuÍCDḄ·cᙊ┵ḄÏ☢ᙊḄÐÑGr,᪷hᙊ┵ḄÃ☢Òn?GᡧÓ½ᡧḄÍ·ᙊ┵Ï☢Ḅᕜ·tᑮr,ᯠÖᑭᵨ×ØÙᳮÆÎuᙊ┵Ḅ.ூ௃ËOÌOE_LABE,OA=OB=60cm,ZAOB=120°,/.ZA=ZB=30°,•*.OE=yOA=30cm,.,,..120ᐔx30/ஹ3nT..ÍCDḄ·=---------=2OK(cm),180cᙊ┵ḄÏ☢ᙊḄÐÑGr,ᑣ27n=20ᐔtÜ10,.•.ᙊ┵Ḅ=,3()2-IO?=20g(cm).ᦑ20Ý.⚪ὃᙊ┵ḄÆÎᙊ┵ḄÃ☢Òn?GᡧÓ½ᡧḄÍ·ᙊ┵Ï☢Ḅᕜ·,ᡧḄÐÑᙊ┵ḄÞ·.14.ß3AABCḄᕜ·G20,ZiABCḄᑁᑗᙊâABãᑗD,AD=4,äåBC=_____.[ᫀ^29⚓ᐳ41⚓

35ூYZ[ᫀ௃6ூ௃᝞?,cBD=x,CF=y,æ!JBF=x,CE=y,,/ZUBCḄᕜ·G20,.,.2x+2y+S=20,.,-x+y=6,/.BC=x+y=6.ᦑ[ᫀG6.ì⚪ὃ¹:Ḅᑁᑗᙊâᑁíஹᑗ·Ùᳮî°±²³ᑗ·ÙᳮïËcuð3ᦪtuñòó⚪Ḅᐵ.415.᝞?ᙠ:ᙶ᪗=>y=6-xâôõö=9(x>0)Ḅ?@ã÷AஹB,cxAḄᙶ᪗G(m,n),äåmG·nGúḄûḄ☢ᕜ·ᑖüG,.ூYZ[ᫀ௃জ.4ঝ.12ூ௃..,/(§ᙠy=6-xâôõy="Ḅ?@L,x.,4..஻=6-m,n=——tnᓽni+n=6,mn=4,wwG·ஹ஻GúḄû☢G""?=4,ᕜ·G2(m+n)=12.[ᫀ^30⚓ᐳ41⚓

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ᦪḄ⚪⚪ᡠḄᩩᩩḄὶ᪷᦮ᩭ.16.᝞#AABC$AC=6,AB=4,D%Aᙠ'(BCḄ)*+NACD=NABC,CD=2,E,(-BC./(0Ḅ124DCE4ABC345(-CEḄ/6.ூᑖ᪆௃᪷⚪;$Ḅᩩ<=>Ḅ34?@ACEḄ/⚪A@.ூB௃C•.•DDCE%aABC34ZACD=ZABC,AC=6,AB=4,CD=2,.\ZA=ZDCEEABACGABAC—=—ᡈG=—,CDCECECD46-46ᡠ@_=---ᡈ=2CECE24ACE=3ᡈG34ᦑ3ᡈG.3⚪ὃP34<=>ḄឋR⚪ḄᐵT,UV⚪WXYᡠ⚪◤⌕Ḅᩩᑭᵨ<=>Ḅ34^.CஹD%⚪:17._`CV?-aᐔ-2016
°+|^3-2|+2sin60°.ூcV^ᫀ௃3^ᫀe31⚓ᐳ41⚓

37ூᑖ᪆௃'hᑭᵨiḄឋR@j=Ḅ<=
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ᦪwᔠy`.18.᝞#A,C,D,Bzᐳ(+AC=BD,ZA=ZB,ZADE=ZBCF,{CDE=CF.ூcV^ᫀ௃{U|᪆ூᑖ᪆௃᪷ᩩ?@YAD=BC,}{U4AED~ABFC,ᵫᐰ<=>ḄឋR?@AY.ூB௃VAC=BD,E.AC+CD=BD+CD,AD=BC,ᙠ4AEDaBFC$ZA=NBḄᑨ%ឋRᐰ<=>Ḅᑨ,⚪ḄᐵT.19.$◤ᙠஹ/ஹஹz⚗;$ᔜ⌱G)$~.᪷5ᡂ¢£ᔜ⚗;¤ᐭ¦⌱Ḅ§¨©ªᑴᡂ᝞¬ᨵ¯᦮Ḅ°_#C^ᫀe32⚓ᐳ41⚓

386°;a2´⊡ᐰᩩ>°_#¶᪗UᦪEa3´ᙠ⚗;$ᵱ§º⌱$Ḅᭆ᳛.ூcV^ᫀ௃a1´25,72Ea2´⊡ᐰ#>|᪆;4a3´⚗;$ᵱ§º⌱$Ḅᭆ᳛6G.9ூB௃À⚪ᑖ᪆Ca1´ᑭᵨᩩ>°_#@jᡧ>°_#AY⚗;ḄÂᦪᡠᓰÄᓽ?AY¦⌱Ḅ§ÆÂᦪEᵨ⚗;ḄÂᦪ◀@ÆÂᦪAᑮ⚗;ᡠᓰsᑖÄ}É@360஺ᓽ?Y⚗;ᡠÍᙊÏ=ḄÐᦪEa2´ᐜY/⚗;ḄÂᦪÒÓ᝕§ÂᦪAY/⚗;Ḅᵱ§Âᦪ᪷ÆÂᦪ625Y⚗;Ḅ᝕§Âᦪ¤Õ⊡ᐰᩩ>°_#Ea3´ᵨ⚗;$Ḅᵱ§Âᦪ◀@ÆÂᦪᓽ?.À⚪᪆Ca1´ᵫᡧ>°_#ᩩ>°_#?AC¦⌱Ḅ§ÆÂᦪ6Ca5+3´+32%=25a´C3+2ᡧ>°_#$⚗;ᡠÍᙊÏ=ḄÐᦪ6C——x360°=72°.25ᦑ^ᫀ625,72Ea2´/⚗;Ḅᵱ§Âᦪ6C25*12%-2=1,⚗;Ḅ᝕§Âᦪ6C25-3-2-1-2-5-3-4=5.᝞¬#C^ᫀe33⚓ᐳ41⚓

39(3)•••¦⌱$ḄÆÂᦪ69Â⚗;$Ḅᵱ§ᐳᨵ4Â_4⚗;$ᵱ§º⌱$Ḅᭆ᳛=G.9ὃCᭆ᳛ÞrEᡧ>°_#Eᩩ>°_#.20.᝞#AABC$AB>AC,BC=6,BCã0ḄAN=4.'=å>DEFGḄêEFᙠBCã0EF=4,DஹGᑖnᙠãABஹAC±,+DG஻EF,GF±EF,ᚖî6F.ïGFḄ/6x,'=å>DEFGḄ☢ñ6y,yᐵóxḄ
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40ூMNGᫀ௃P1QkḄE(-11RP2QXI2+X22+8=66.ூUV௃W⚪ᑖ᪆)P1Q:;ᨵ?@Aᦪ᪷
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