2022-2023学年河南省周口市中考数学专项突破仿真模拟卷（一模二模）含解析

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2022-2023
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62022-2023
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7ᦪᵫ23807.19.᝞cᙠ£☢¥¦ᙶ᪗©Aªᦪ«mx+n(m/))Ḅc¯°±ªᦪy=±(k#0)Ḅcx¯¶ஹ¸¯▲ᑁḄAஹBN&°y¼¶&C,¾&BuBMJ_x¼ᚖÃM,BM=OM,OB=2j],&AḄÇᙶ᪗4.(1),g±ªᦪªᦪḄw᪆Édxூᑖ᪆௃(1)᪷G⚪ÊË,&8Ḅᙶ᪗/ÌË,±ªᦪḄw᪆ÉÌ,&AḄᙶ᪗/ÌË,ªᦪḄw᪆Éd(2)᪷G(1)AḄªᦪw᪆ÉË,&C,&Mஹ&8ஹ&஺Ḅᙶ᪗/ÌË,?Î`M80cḄ☢Ð.ூzw௃(1)ᵫ⚪ÊBM=OM,஺8=2Ñ.BM=OM=2,19⚓/56⚓

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262022-2023
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322022-2023
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42ஹ6⚪ᜧ⚪ᐳ8⚪ᑖ75ᑖ16.ᐜᓄ
222—x—21ᐸx&ᨵx-1ḄX2-4x-222᦮ᦪ6.ூᫀ௃ூW6௃ூᑖ᪆௃ᐜ᪷ᑖḄ/ᑣ_`ᓄᯠ¡ᨵḄ᦮ᦪ6¢£ᔠᩩ¥ḄxḄ
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6⚪Ḅᐵ8&·¸¹ºᑖḄ/ᑣ.17.¼ᑭᵨ¾Ꮇ_`mᔠAÀÁÂᑭᵨÃÄ1ᔁÆÃÇÈÉᡠÊËᵬË{4☢ÎÏᜧËÐËḄÑÒÓ¼ᵨᔁÆÃᵬËÔAE&8m,ᵨÃÄᙠᵬË⚔Eᜐ{AᜐÃÐË⚔ÙDḄÛᑖÜ37஺142஺ÞᙠAᜐÃÐËßÙBᜐḄá32஺â᪷¼ÃᦪãÁ©ᵬஹÐ[KËḄÑÒ.ᑮ0.01mcos32%0.85,tan32°^0.62,cos42°^0.74,tan42°^0.90,cos37°~0.80,tan370^0.75e43⚓/g56⚓

43ூᫀ௃ᵬËḄÑ60.8m,ÐËḄÑ24.8m.ூᑖ᪆௃ðAñAN_LBDòN,tan37°=—«0.75=-,óDN=3x,ᑣEN=4x,᪷EN4DNBNtan42°=——xḄ
ôõDN=36ஹAN=40,᪷tan32o=——BNḄᓽANANᑮᫀ.ூW6௃6ðAñAN_LBDòN,3=0.75=-,EN4óDN=3x,ᑣEN=4x,ᙠRtADNA111,ᨵDN=3xஹAN=4x-8,DN3xantan420=-----,ᓽ------~0.9,AN4x-86x=12..♦.DN=36ஹAN=40,ᙠRtABNAᵫ⚪Cö/NAB=32஺,BNVtan32°=----->AN/.BN=ANtan32o~24.8,DB=DN+BN=36+24.8=60.8,AC=BN=24.8,e44⚓/g56⚓

44ᵬËḄÑ60.8m,ÐËḄÑ24.8m.⚪ὃ%=6UḄ÷ᵨ6⚪Ḅᐵ8&øùᩖḄA▭(⚪᪀⌼¡Uý⌱ÿᔠ〉Ḅᐵ.18.2018ᓭὃ4ᨴ1!"#$%ᐝ'()**+᪥-.ᐰ(012Ḅᡂᦔ%ᙠ᪥ᑁ78#$*9:%;<-.(1)?Ḅ9:ᡂ@ᢥAஹBஹCஹDGHI.#$JK%LJKMNOᑴ᝞RSTJKU%VWUᡠYZ[\Rᑡ^⚪`(a'`A.`65ᑖ~70ᑖgB.`60ᑖh65ᑖgC.`55ᑖ~60ᑖ0gDH:55ᑖiR)jA36__U____ri6_>0ABCDEF(1)-.(1)?ᐳᨵI,D.(0ᡠᙠḄᡧnᙊpḄqᦪ)____g(2)V⊡ᐰᩩnJKUvᡧnJKUg(3)x?(0ᡂ@ḄyᦪzᙠI.ᑁg(4){x᪥-.(0ᐳᨵ800|%VW}K~ὃA.B.Ḅ(0ᐳᨵ|ூ\ᫀ௃(1)60,36஺g(2)᪆(3)Ag(4)~ὃA.B.Ḅ(0ᐳᨵ680|ூ௃ூᑖ᪆௃(1)ᐜ᪷JKU|ᦪ%ᓽᑮD.|ᦪḄᑖ%D.(0ᡠᙠᡧnḄᙊpḄqᦪg(2)᪷⚪⊡ᐰUnᓽg(3)ᦪᑮᜧ#$᣸ᑡ%ᨬḄᦪ(ᡈSᦪ)Ḅ£ᙳᦪ)ᓽ)yᦪg(4)ᵨ-.(0ᦪ¦i~ὃA.B.Ḅ(0ᡠᓰḄᑖᓽ.ூ௃(1)|ᦪ=36+60%=60(|)%D.(0ᡠᙠḄᡧnᙊpḄqᦪ)9*360஺=36஺%60ᦑ\ᫀ)60,36°g(2)B.Ḅ|ᦪ)`60-(36+3+6)=15|%ᑖ)"x=25%,60D.Ḅᑖ)10%g²45⚓/56⚓

45⊡ᐰᩩnJKUvᡧnJKU᝞R:(3)ᵫ⚪%᣸·¸²3031HᦪᙠAI.ᑁ%ᦑx?(0ᡂ@ḄyᦪzᙠI.Aᑁ%ᦑ\ᫀ)Ag(4)800x(60%+25%)=680|%\`~ὃA.B.Ḅ(0ᐳᨵ680|.+⚪ὃ¹*ᩩnJKUvᡧnJKUḄºᔠ»ᵨ%¼½JKU%¾ᨵ¿ḄJKUᑮÀ⌕ḄZ[Â⚪ḄᐵÃ.19.᝞U%ACÂ00ḄÄÅ%ÆPᙠÇjACḄÈÉÇÊ%ËPC=CO,ÆBᙠ஺OÊ%ËZCAB=30°.(1)Ì`PBÂ஺OḄᑗÇg(2){D)ᙊOÊÎÏÐÆ%஺0ḄÑÅ)5cm%ÒÓCDÉ)%GnADPB)Ôn%ÒÓCDÉ)%GnADCB)Õn.ூ\ᫀ௃(1)Ì'᪆(2)—cm,——cm33ூ௃ூᑖ᪆௃(1)Ö×OB,⌕Ì'PBÂᑗÇ%Ø◤Ì'OBLPBᓽ;(2)ᑭᵨÔnஹÕnḄឋÝ%ᙊpNCODᓽÞ^⚪.ூ௃(1)᝞UÖ×OBஹBC,²46⚓/56⚓

46VOA=OB,.,.ZOAB=ZOBA=30°,JZCOB=ZOAB=ZOBA=60°,'.'OB=OC,**•AOBCÂIßn%.e.BC=OC,VPC=OA=OC,ABC=CO=CP,.e.ZPBO=90°,AOB1PB,PBÂG»OḄᑗÇgà2জজḄÉ)^cm%GnADPBÂÔn,GnADPBÂÔn%ZADB=AACB=60°,.,.ZCOD=2ZCAD=60°,ঝÒGnADCBÂÕn%᧕äNCOD=120஺,,_-,...120•æ510ç■•CDḄÉ=-----=----cm,1803²47⚓/56⚓

47B+⚪ὃ¹*ᙊḄºᔠ⚪%èéᑮᑗÇḄᑨஹÕnḄឋÝஹÔnḄឋÝஹÓÉëìIäí%îïðñòÇஹᮣô»ᵨõᐵäíÞ^⚪ÂᐵÃ.20.'ö÷øùú%¿Ï%ᝤᝤøi50ü/ᑖḄýqþö%'ᑮø¸ÿ⌕ᓽᝤᝤ250/ᑖḄᓽ250/ᑖḄᢚᝤᝤ!.᝞$%&'(Ḅ)(*()-./Ḅ01x(ᑖ)41Ḅ5ᦪ$7.(89:ᝤᝤ;<ᙠ!ᩩ?@ḄABCD$7AஹCஹDIJᙠᩩ@K)(1)MKN8cḄ5ᦪ⊤RS.(ᑏ.UVWḄXZ)(2)MJOᙶ᪗^J஺Ḅ`▭bc.(3)exḄXf0-ᝤᝤg)1500.ூijkᫀ௃(1)KN5cḄ⊤RSfy=-150x+7500(304x445)t(2)0(50,500),`▭bc9vᙠ50ᑖw0(500Ḅᙢyv〈ᑮᝤᝤ|}t(3)ex=10ᡈx=300-ᝤᝤg)1500.ூ௃(⚪ᑖ8ᑖ)(1)45X50=2250()JCḄᙶ᪗f(45,750)............................1ᑖ30஻+6=3000KNBCḄ5ᦪ⊤RSf9y=kx+b,(30,3000),(45,750)ᐭ”,K45k+6=75048⚓/56⚓

48k=-l50:%=7500Ay=-150x+75003ᑖACḄ5ᦪ⊤RSf9y=k|X+b|M=3000(0,3000),(45,750)ᐭ4541+8=75041=50:%=3஺஺஺y=-50x+3000ᝤ5ᦪ⊤RS9y=-50x+3000.......4ᑖ750+250=3ᑖAE(48,0)EDḄ5ᦪ⊤RS:y=250x-12000.......5ᑖy=-50x+3000x=50,.Iy=250x-12000ஹ=500.".D50,500............................6ᑖᐸᑖ310ᡈ30....................................8ᑖ21.□ᐝ£¤ᵨ¦ᖪ¨ᙠ©ª«¬;ᜓ¯°AஹB&±£¤ᘤᩞᐳ100µ°C¶&±£¤ᘤᩞḄ°·ஹ¸·᝞⊤ᡠº9A±ᘤᩞB±ᘤᩞ°·ᐗ/µ2228¸·ᐗ/µ3044¼kᑡ¾⚪91᝞¿ᡠ¯°Ḅ¶100µ£¤ᘤᩞᐰÁ¸.¼¾Â£¤ᵨ¦Ã¨Â᝞Ä°ÅÆÇÈᑭÊÇRᑮ1264ᐗ˼^ᳮᵫt2⌕ÈÎÏᡠÐᑭÊÑᡠÐᑭÊÒᨵÔÕ°Å·ÖḄ50%,¼ØÙ£¤ᵨ¦ᖪ¨ÚÛ°Å᝞Ä°ÅÆÇÈᑭÊËᑭÊ%ÜÝËூijkᫀ௃1A±ᘤᩞf42µᑣB±ᘤᩞf58µt2A±ᘤᩞf40µᑣB±ᘤᩞf60µᑭÊ,ᑭÊ%1280ᐗூ௃ூᑖ᪆௃1A±ᘤᩞfxµᑣB±ᘤᩞf100-xµ᪷á⚪bᑡ.ᐗy49⚓/56⚓

49ã°Ckᓽä;(2)A±ᘤᩞfaµᑣB±ᘤᩞf(100-a)µ᪷á⚪bᑡÒᨵçSäM.aḄXZᑭÊfy,᪷á⚪bᑡ.y-aḄ5ᦪᐵéSᯠᑭᵨ5ᦪḄឋì°Ckᓽä.ூ௃(1)A±ᘤᩞfxµᑣB±ᘤᩞf(100-x)µä9(30-22)x+(44-28)(100-x)=1264,9x=42,100-x=58(µ)k9A±ᘤᩞf42µᑣB±ᘤᩞf58µt(2)A±ᘤᩞfaµᑣB±ᘤᩞf(100-a)µä(30-22)a+(44-28)(100-a)<50%[22a+28(100-a)],9a>40,ᑭÊfyᑣä9y=(30-22)a+(44-28)(100-a)=-8a+1600,ñf%ò5ᦪᡠex=400,ᑭÊᓽᑭÊ=-40x8+1600=1280(ᐗ)k9A±ᘤᩞf40µᑣB±ᘤᩞf60µᑭÊᑭÊ%1280ᐗ.⚪ὃôõ5ᦪḄöᵨᐗyãḄöᵨᐗÒᨵçSḄöᵨ÷ø⚪bùᑮçWᐵéᑡ.yãùᑮÒᨵçᐵéᑡ.ÒᨵçS᪷áᦪWᐵéjú5ᦪ᪆S%⚪Ḅᐵû.22.᝞$ᙠAABCüJNfACþḄÿ
DAB
NMPNḄ⚔PCD
ᐸᑖBC,ACMஹN,/MPN+NACB=180஺.PM(1)᝞*1,AC=BC,ZACB=90°,DABḄ./ᑣ——=,2345Ḅ678PM(2)᝞*2,BC=m,AC=n,ZACB=90°,DABḄ./ᑣ——=PNBDPM(3)᝞*3,——=k,BC=m,AC=n,2>?ᑏA——ḄB.(ᵨk,m,n⊤E)F50⚓/I56⚓

50knூLMNᫀ௃(1)1,34QR᪆8(2)—8(3)mூᑖ᪆௃(1)᝞*1.TPGJ_ACG,PH_LBCH,U◤34WPHMs/\PGN,᪷YZ[\]^_`ᡂbcᓽef8PMPH(2)᝞*2.TPGJ_ACG,PHJ_BCHgh34APHMsaPGN,ef——=——PNPGPMHi᪷Y/kPHCs^ACB,PG=HC,ᓽef——=—8PNm(3)᝞*3.TPGJ_ACG,PH_LBCH,DT_LACT,DKJ_BCK,᧕3WPMHsWPGN,LACDTaddkkn—PMPH,S4ACDef=-ᵫ--------=—■.fA-^=78~7\~i᪷YDT஻PG,PNPGQV^BCD-BCDKBDDT(l-k)m2PHCPPGPHDKknDK஻PH,ef——,pqersfAt=ᓱ=v,Ywx⚪fzRDKCDDTPGDT(l-k)tn{.ூ|R௃(1)᝞*1.TPGJ_ACG,PH_LBCH,*1VAC=BC,ZACB=90°,DABḄ.,...CD}ᑖZACB,~PGJ_ACG,PH_LBCH,8.PG=PH,VZPGC=ZPHC=ZGCH=90°,8.NGPH=NMPN=90°,.♦.NMPH=NNPG,VZPHM=ZPGN=90°,.•.WPHM^APGN,F51⚓/I56⚓

51.PMPH••------=------=1!PNPGᦑ18(2)᝞*2.TPG_LACG,PH_LBCH,,rZPGC=ZPHC=ZGCH=90°,AZGPH=ZMPN=90°,AZMPH=ZNPG,VZPHM=ZPGN=90°,.•.WPHM^APGN,.PM_PH^~PN~~PGfVPG=HC,.PMPH^~PN~~HCDAB.ADC=DB,AZDBC=ZDCB,AAPHC^AACB,PH_AC.PMPHAC_n,•MKMKNF,,nᦑ
8mB^fHC*2(3)᝞*3.TPG_LACG,PH_LBCH,DT_LACT,DK_LBCK,F52⚓/I56⚓

522efWPMHs^PGN,PMPHPNPG1ACDT°AACD2_______ADS^BCD1BCDK2DKkn'~DT~~DT஻PG,DK஻PH,.PHCPPG"~DK~^D~~DT'PH_DK_kn'^PG~~DT~'PMkn⚪ὃZ[\]^Ḅᔠ⚪Z[\]^Ḅᑨឋஹ]}ᑖḄឋᳮஹ\]^Ḅ☢R⚪Ḅᐵᮣᵨᡠஹ᪀⌼>]\]^R{x⚪._323.᝞*ᙠ}☢>]ᙶ᪗¥xOy.©ᱥy=ax2+bx--xA(1,0),B(-3,0)2®ᨵAḄ>1~y=kx+biyC,©ᱥ,Ḅ±²D.(1)³©ᱥḄ´ᦪ⊤¶·8(2)DᙠF¸¹▲»¼CD=5AC,³w/>1ḄR᪆·8ᙠwᩩ¾¿E>1¿Á©ᱥḄ
³4ACE☢ḄBóAw/EḄᙶ᪗~(3)᝞*ÄPᙠ©ᱥḄ_ÅᙠF¸¹▲ᑮxḄÇÈ4,Qᙠ©ᱥzA,D,P,Q⚔ḄÊ^Ëᔲᡂ}ÍÊ^ÎË2>?ᑏAQḄᙶ᪗8ÏᨵË2Ð4ᳮᵫ.F53⚓/I56⚓

53139ூLMNᫀ௃(1)y=-x2+x--8(2)Ñx=-2/SAACEᨵBB
w/Eᙶ᪗(-2243352,--)8(3)(-2,-Q)ᡈ(-4,5)ᡈ(y/j,2+5/7)ᡈ(-yfj,2-ypj).ூᑖ᪆௃(1)᪷Y©ᱥxA(1,0),B(-3,0)ÕwÄ·y=a(x-1)(x+3),Ö×ØᑭᵨÚᦪ⚗fᑮᐵaḄÁÜRÁܳAaḄBᓽef8(2)TDF_LxF,EM஻yADM,᝞*1,᪷Y}ÍᑖᡂbcᳮefᑮOF=5OA=5,i᪷Y©ᱥR᪆·fᑮD(-5,6),ᑭᵨà¥ᦪá³f>1311ḄR᪆·y=-x+1,ÄE(x,—x2+x-â)ᑣE(x,-x+1),pqME=-5x2-2x+-,ᯠØᑭᵨ\]^☢ä·ersfASAACE=(-,X2-2X+9),i᪷Y2222¸æ´ᦪḄឋᓽeR{x⚪813(3)ᐜMP(-l,4),ÄQ(t,-t2+t--),ᯠØᑖêë~AP}ÍÊ^APDQḄ
ᡈAP}ÍÊ^ADPQḄ_]ìêëᑖí7ᓽef.ூ|R௃(1)Ä©ᱥR᪆·y=a(x-1)(x+3),ᓽy=ax2+2ax-3a,31-3a=-—,Rfa=
,2213.••©ᱥR᪆·y=—x2+x--822(2)TDF_LxF,EM஻yADM,᝞*1,~OC஻DF,ACAOF54⚓/I56⚓

54qCD=5AC,AOF=5OA=5,ᓽDḄïᙶ᪗-5,13Ñx=-5/y=—x2+x----=6,ᑣD(-5,6),22k+b=0{fc——1ðA(1,0),D(-5,6)ñᐭókx+bif<õ',,Rf÷
5%+4=6[a=1>1ḄR᪆·y=-x+1,13ÄE(x,—x2+x----),ᑣE(x,-x+1),221315/.ME=-x+1-(—x2+x----)=------x2-2x+—!2222111,5ஹ1.51/ஹ••SACE=SAME-SCME=-x1EM=—(----x-2xH—)=x2-xH—=-----(x+2)AAA22224442+2,493Ñx=-2/SAACEᨵBB
w/Eᙶ᪗(-2,--)842(3)©ᱥḄ_Å>x=-1,qPᙠ©ᱥḄ_ÅᙠF¸¹▲ᑮxḄÇÈ4,.t.P(-1,4),13ÄQ(t,—t2+t----),22ÑAP}ÍÊ^APDQḄ
/᝞*2,A(1,0)ᔣù}ú2²ᓫüᔣ}ú4²ᓫüfᑮP(-1,4),ᑣQᔣù}ú2²ᓫüᔣ}ú4²ᓫüf13ᑮD,ᑣD(t-2,-t2+t--+4),221313131ðD(t-2,—t2+t--1-4)ñᐭy=—x2+x-—f
(t-2)?+(t-2)--=—t2+t222222233--+4,Rft=-2,w/Q(-2,--)822ÑAP}ÍÊ^AP0DḄ
/A(1,0)ᔣù}ú2²ᓫüᔣ}ú4²ᓫüfᑮP(-1,4),ᑣQᔣý}ú2²ᓫüᔣ¿}ú4²ᓫüfᑮD,ᑣF55⚓/I56⚓

5513D(t+2,-t2+t---4),221313ðD(t+2,—t2+t-----4)ñᐭy=—x2+x-----f222213135
(t+2)2+(t+2)——=-t2+t-------4,Rft=4,w/Q(-4,-)~22222ÑAP}ÍÊ^ADPQḄ_]/᝞*3,APḄ.ᙶ᪗(0,2),,123ÄD(m,n),ᑣ"•=(),஻+2'+'-2=22115..m=-t,n=----122-t+—!22./111ஹ..D(-t,-—t2-tn----),22ðD(-t,-—t2-t+—)ñᐭy=—x2+x--—t2-t--=-—t2-t+—,22222222Rfti=J7,e-R,w/Qᙶ᪗(R2+J7)ᡈ(-J7,2-R),35ᡠÿQ
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ᙶ᪗1Ḅᐵஹ345
ᙶ᪗6"789:;<=>ᮣ@AᵨBᐵ89C+⚪DᐵE.G56⚓/I56⚓