2022-2023学年海南省临高县中考数学专项提升仿真模拟试题（二模三模）含解析

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2022-2023
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72022-2023
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2233456ᦪḄ᪆FGy,-H,xV®y=ax-2(a60)Ḅ=-A,Al=-3a-2,La=-L••6ᦪḄ᪆FGy=-x-2N(2)6ᦪḄ᪆Fy=-x-2OPx=0,QiJy=-2,AD(0,-2),•,FVDᐵxḄXY0.F(0,2),DF=2+2=4,y=-x-2x=-3x=1[\]ீ31Ly=-…’XAB(1,-3),VAADF☢=LXDFXCE=6,2aBDF☢=bXDFX|x„|=2,2.♦.aABFḄ☢=Z\ADF☢+4BDF☢=6+2=8.gh⚪ὃkl┦non6ᦪḄᭆqrstᦪuv6ᦪᐵtF3456ᦪw6ᦪxᡂzᜐᳮᡂzḄᐵ}V~ᵨrstᦪuvL6ᦪ3456ᦪḄ᪆F.23.VOḄ“ᬀ”ᐸᙢᳮ᎛ᩩᡠᬀ✏ᕡ¡¢£ᐗ¥¦§᳛©ª«VḄ¬ᕡ®¯°±²³¡´µḄᓄ±·ᧇ.¹º»᩟᩽ᦋ☩À᩟ÁÂ᪀Ä°À´Å¦᩟ÆÇ[ÈÉÊËÌÍ὏ᙢ1200ÏᐰÑᵨ¡ÒᜧÔÕᬀÖ×☘ᬀÙÚ¡ᬀÛÜᜧÔÕᬀÝÏÞᑭ1000ᐗ,Ö×☘ᬀÝÏÞᑭ1200ᐗ.(1)¹ºà᩟¡ÒḄ1200ÏᬀáâÞᑭ128ãᐗᑣà᩟¡ÒᜧÔᬀḄ☢ᨬGâÏæ(2)çº᩟èéᢝ(1)OᜧÔÕᬀḄᨬ☢¡ÒᜧÔÕᬀÝÏḄÞᑭ4¹ºÄ°ba%N5ᵫÖ×☘ᬀÝÏÞᑭí᩟èᑭᵨîïÌÍ὏ᙢðÖ×☘ᬀḄ¡Ò☢ᙠ¹ºᨬ+23⚓/C52⚓

23â¡Ò☢ḄñẠÛ᡽ᜧ2a%,ôõÝÏᑭö÷Ä°ga%,ø᪵çºᬀḄCᑭöúᑮl2082ãᐗvaḄü.ூþÿᫀ௃1᩟ᜧᬀḄ☢ᨬ800250ூ௃ᑖ᪆1᩟ᜧᬀḄ☢xᑣ☘ᬀḄ☢1200-x᪷#$%᩟&'(ᑭ128*ᐗ,-./0ᐵ2ᜧᬀḄᑭ3+☘ᬀḄᑭ321280000ᐗᑡ./67
2᪷#8%ᬀḄ9ᑭ3:ᑮ<208*ᐗ,-/0ᐵ2ᜧᬀḄᑭ3+☘ᬀḄᑭ3=2080000ᐗᑡ>?71᩟ᜧᬀḄ☢xᑣ☘ᬀḄ☢1200-X,᪷#⚪B-1000%+1200
1200-%>1280000-x<800᩟ᜧᬀḄ☢ᨬ800.2᪷#⚪B-800x1000^1+1«%j+400
1+2a%-1200^1+|a%J=2080000a%=Z,ᑣD>?,ᓄF6஻+17/-10=0-/=J2=KL.ᔠ⚪BN$'223ᡠP2ᡠPa=50.QRS⚪ὃU?ḄᳮXYᵨ⚪Ḅᐵ^_`a⚪Bbcdeᑡ./6[>?ᡠ◤Ḅ./0ᐵ2[/0ᐵ2.24.᝞h1,ᙠjkABCDcACVlmnoCD&QEpCE=CA,qrAE.FABsḄKQtBF=DE,qrFC.u24⚓/952⚓

24(1)zDE=1,CF=207CDḄ(2)᝞h2,QGmAEḄcQqrBGACH,zNBHC+/ABG=60஺7:AF+CE=V3AC.ூᫀ௃(1)3(2)᪆.ூ௃ᑖ᪆(1)ᐜ4OECBF,AB4E=CF=2®1CDrᑣCE=NC=x+l,ᙠRt^ACDc᪷#ᳮᑡ>?7(2)noBGCDḄnomQM,ᐜ/BGgEVG,b,-CE+AF=2CD,ᵫ/Ὺ£lkḄឋ¥[£lk᜜lḄឋ¥,7NA/=/MCG=N/CG=N/8G=15஺bN/CD=30,ᵫcosNH8="-஺஺=®¯஺,°,±X.AC2প:♦.•jkABCD,.-.AD=BC,ZADC=ZABC=90°.•.•ZADE+ZADC=180°,.-.ZADC=90°,•,.zADC=zABC.vBF=DE,/.ADE^ACBF,.AE=CF=2».•.ᙠRtAABCcAD=yfJ,CD=x,ᑣCE=AC=x+l,+x2=(x+1)',-x=3,ᓽCD=3u25⚓/952⚓

25ফnoBGCDḄnomQM᧕AAIBGÂEMG,.-.GM=GB,AB=CD,ZABG=ZM,ÃBF=ED,••.AF=ME.••CE+AF=CE+ME=2CD,qrCG,ᙠRtZ\MCB,CG=MG,/.ZM=ZMCG.ÃCA=CE,tQG_AEḄcQ•ZMCG=ZACG,ÃZBHC=ZM+ZMCG+ZACG,ZBHC+ZABG=60,/.zM=zMCG=zACG=z.ABG=15°»oNACD=30•CDvcosz.ACD=-----,AC■•CD=—AC,2•••AF+CE=y/3AC.QRS⚪ὃU?_1Ḅᐵ^7eNM=/"CG=NZCG=N”G=15஺_2Ḅᐵ^.25.ᡃÒË⍝ÔBKÕ᦮ᦪn×,P°ØÙ᪵Ḅᑖn=p*q
p,q_᦮ᦪtpWq,ᙠnḄKᑗÙᑖc᝞Üp,qÝÞᦪßàḄáᨬâᡃÒãäpxq_nḄᑖ.åæF
n=~.qç᝞12,Pᑖᡂ1x12,2x6ᡈ3x4,ᵫ12-1>6-2>4-3,ᡠP3x4_12Ḅᑖᡠ3PF
12=—.41᝞ÜKÕ᦮ᦪm_ê᜜KÕ᦮ᦪnḄë>ᡃÒä᦮ᦪm_ìᐰë>ᦪ.7VÔBKÕìᐰë>ᦪm,9ᨵF
m=1u26⚓/952⚓

26(2)᝞ÜKÕÝî᦮ᦪt,t=10x+y(lᦪm,m=W(n᦮ᦪ)demḄᑖeF(m)Ḅáᓽ,(2)ᣚtḄÕîsᦪÆᓝîsḄᦪ-ᑮḄôᦪᓃᑣt=10y+x,ᵫ"ᔡἝᦪ"Ḅÿ
xyḄᐵᡠᓽ(3)ᑭᵨ"ᔡἝᦪ"Ḅ
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F(t)Ḅᓽ.⚪᪆!(1)$%&'()ᐰ+,ᦪm,-m=M(n./᦮ᦪ)!|n-n|=0,.nxn1mḄᑖ.•.$%&'()ᐰ+,ᦪm,3ᨵF(m)=2=1n(2)-5ᣚtḄ(78ᦪᓝ78Ḅᦪ:ᑮḄ<ᦪ.=ᑣt=10y+x,?t1"ᔡἝᦪ"(10y+x)-(10x+y)=9(y-x)=36,.*.y=x+4,Vl->5133-S459451I3CுE..'ᑗ"ᔡἝᦪ"GF(t)Ḅ.C.133-594ὃI!JᑖḄKᵨ<
Jᑖ▅MN.O27⚓/352⚓

272022-2023
ᓭḕὃᦪ⚗ᓣ⚪'ஹ⌱'⌱Uᐳ10W⚪XW⚪3ᑖAᑖ40ᑖY1.ᙠ1,0,ᐔ-3ab(ᦪGḄᦪ1$YA.1B.0C.ᐔD.-32.᝞ij☢8ᨵ'(ᳫm'(ᙊopₐrs☠ᙠ'uᑣvwi/Ḅ1UYA.63x102zB.6.3x103zC.6.3*1()6zD.6.3x1஺z4.᝞i}DE1AABCḄG7ᑣSAADE!SABC=()AD.1!45.ᑡᐵ⊈ḄG┯Ḅ1UYA.⊈18Ḅ+,᪷B.2⊈3C./8=±2^D.1ᙠᳮᦪ6.᝞⊤110ᡝᙠ3ᨴḄᵨᵯ¡¢:UᡝᦪY1234ᨴᵨᵯ¤U¥/ᡝY30425052ᑣᐵa10ᡝᨴᵨᵯ¤ḄG7ᦪ1UYA.42B.46C.50D.527.§¨©ª«¬├¬├,1“¯°xᐗḄ§¨ᡭ7ᢚ´µ¶·10ᐗ”ᑣᑡ¹ᦪG,O28⚓/352⚓

28º/⊤»¼ᖪ©¬├,Ḅ1UYA30%Ux-10YB.30%x-10C.70%Ux-10YD.70%x-108.᝞i'¿ᢚᡧÁ´1'(ᡧpᐸGᙊÄÅ.120°,OB=2,AB=3,ᑣᢚᡧÈ☢ÉᑖḄA.1B.71C.7D.7n9.}ᐵxḄ'ᐗCË,ÌÍ2-2x+Ḅ+1=0ᨵÏ(ÐÑÒḄÓᦪ᪷ᑣÔᦪV=H+bḄiغ1UY10.᝞iIA,BᑖᙠxÙஹyÙ8U0A>0BY,ÜAB.ÝÞḄᙊ¯I0,C1^^ḄGIßàAC,BC.ᑡàá:জAC=BCঝ}0A=4,0B=2,ᑣäABCḄ☢åÒ5ঞ}0A-0B=4,ᑣICḄᙶ᪗1U2,-2Y.ᐸG/ḄàáᨵUYஹ01⚪⚪ᨵ6!⚪"#⚪4ᑖ"ᐳ24ᑖ811.ÐÒ3x—2>1Ḅê1.O29⚓/352⚓

2912.ᑖJ!a2-4a=.13.ᙠ'(ÐëìḄíîG¨ᨵ4(ïᳫm6(ðᳫ◀ò⁐Ðu᜜ᐸõöÑ÷øíîG%&᥎'(ᳫ᥎ᑮḄ1ïᳫḄᭆ᳛..14.᝞iᙠAABCGZABC=90°,D1AC8'IAD=AB.}NA=50஺W]ZDBC=_°.15.ᦪÙ8ᨵüIA,B,C,ýA,BÏIþḄÿ
3,B,CḄ
1.A⊤Ḅᦪ
-2,ᑣC⊤Ḅᦪ
16.᝞ᱥy=-x2+2xḄ⚔M,x0ஹAP(a,0)
OA(ᒹ!)#P$yḄ%&'y=(xB,ᱥC,(BC)ᙠBCḄ+,$-.BCDE,CD=2,ᑣ/-.BCDEAOAMᚮ12ᑖ45.6aḄ78:
.<ஹ=>⚪(@⚪ᨵ8B⚪C17-19⚪D⚪6ᑖC20ஹ21⚪1D⚪8ᑖ,C22ஹ23⚪D⚪10ᑖC24⚪12ᑖᐳ66ᑖ)A2517.(1)HIJ|-3|+K><3\(2)=NOJ---+------=1.2x-ll-2x18.ᐜᓄUVW8Jᓃ^ᓝ5<)ᐸ\x=3.x2x19.ᗩ^_`⌕bcd⚪”f4)ᑖghiḄj).
%&j).”
klḄ᝛ᐜᵨop$qr᝞ᡠḄt48CQ,uᑏqr᝞wxyzḄ{|}Wb.{|J᝞ᙠj)./8CD\BC=AD,AB=.C30⚓/52⚓

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.1
W.OABCḄᕜ21.r=ᐜ4ᳫஹ¡ᳫஹ¢£ᳫஹ¤Ꮙ¦ஹ§¨i5⚗ª«Ḅ¬O®¯᪥±²³´2ᑖᐜ4µ¶ᨬ¬Ḅª«⚗¸D¹º⌱⚗¼&r½ᔁ¿´uÀÁHᦪÂᑴᡂ᝞wÅyzḄÁHJ=>wᑡᡂÇ:4ᨬ6᝕M9:;4ᨬ<᝕U9>?ᩩABCD1
m=%,ÊËᐳ³7rÌᐜ¼&¿´⊡ᐰᩩ.ÁH2
ᐰ᪥ᨵ800ÌᐜᑣÎ᪥ÏᨵÐÑÌᐜ¬ᡭᳫÓ3
Ô᪥⚜ᜓ׬§¨Ḅ4¹ØᵱØ᝕\±²⌱72¹¼&ªÛÜÝW³ᑮᵱ᝕ᐜḄᭆ᳛
ÐÑÓC31⚓/52⚓

3122.᝞z^ABC\ZB=90°,tanZBAC=y,î2Ḅ஺O×Añò1,ôABᔣ+öö6'ABhᑗᑗD/ᙊú0ûᙠAC6ö\üý6஺஺BChᑗE2.$OG_LACG.1ᑭᵨ2,cosNBACḄ2DAᔠ᝞1,0G3᝞3,ᙠ஺O%&'()*+AD=x,.ᵨ/xḄ0ᦪ2⊤4OG,5ᑏ7xḄ8:.23.<=>?⃩ᩰ᫥CD*E3Fᐗ/ᔴḄJKLᐭᩰ᫥N*ᑖPᡂAஹBST*ATᩰ᫥ᒹVNWX*ᒹVᡂYZ1Fᐗ/ᔴ*[Ḅ\ᙳJKyᓫ`aFᐗ/ᔴᦪbxx“*ᓫ`aᔴdeḄfᦪᐵh᝞ᡠ4BTᩰ᫥jklNm*jklnoᵨsᓫ`aFᐗklᦪbtᓫ`aᔴdeḄfᦪᐵhqs=12+3/*\ᙳJKZ9Fᐗ/ᔴ.1ATᩰ᫥ḄbZ5ᔴ*[Ḅ\ᙳJKquᔴvwFᐗx2yz=>ᦈL10ᔴᩰ᫥*ᐸ)ATᩰ᫥ᨵ4ᔴ*ᑣ?⃩ᢇᩰ᫥ᡠḄᑭwZvwFᐗxᑭ=n7?⃩nᡂY3yz=>ᦈL20ᔴᩰ᫥*ᐸ)ATᩰ᫥ᨵxᔴ*?⃩ᢇᩰ᫥ᡠḄᑭZwFᐗ.জWᐵXḄfᦪᐵh2ঝyz=>30Fᐗᑭ*aᵨW├ḄATᩰ᫥ᨵvwᔴx24.ᡃaᨵ*ḄᜳZ60஺Ḅ“¡”.᝞1,ABCD),yAB=AD,ZA=60°,ᑣABCDq“¡”.1᝞2,CHq^ABCḄ§¨*ZA=45°,ZABC=120°,AB=2.CH2ᙠ1ᩩª«*+DqAABCᡠᙠ\☢ᑁ*ABCDq“¡”*.WX®32⚓/n52⚓

32ᑏ7ABCDḄ☢°(3)᝞3,ABCD)*BC=2,CD=4,AC=6,ZBCD=120°,AD=BD,±ᑨ³ABCDq´q“¡”*5▊¶ᳮᵫ.®33⚓/n52⚓

332022-2023
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