湖南省怀化市中学方县2023-2024学年七年级数学第一学期期末综合测试模拟试题含解析

2023-2024

2.0M®t,&{W/b®^ÊJs,fcWgfcjtbS

0^«&W,^ÆW#±Æ^o

3.

-,Æ&®(<<h®3#,&30#)

i.MiÈM4«nnrifêM()

A.6B.63C.46D.47

2.®4ÜWWiÊ^-|è4(M)X,5min

Js«-mW()*/ft.

A.120B.160C.180D.200

3.Wl«l=-a,()

A.«>0B.«<0C.<z>O^<z=OD.a<0^a=0

4.M,()

A.44“B.34“C.24“D.14-

5.51°14'36",()

A.38°45'24"B.39°45'24"C.38°46'24"D.39°46'24"

6.fiÆÉ-3’C_h7f8’0()

A.5’CB.-5’CC.ll’CD.-ll’C

7.TJim'Æ:(D|a|-Æ<O[;(3)éêM^T'È*>â<JMl;©¥^T'È*A’6Ü

su.)

A.14“B.2^bC.34-D.4^b

8.M,£0,A,B,C,^OEr^ZBOC,M^DOE()

A.20.5B.22.5C.24.5D.26.5

9.$0®.ABCDÿrâ,OAB.CB±S^a^^BD±,BE,BF,WJZEBFÔWb^J

A.15°B.30°C.45°D.60°

10.àM«AB±,()

A.AM=BMB.AB=2AMC.BM=—ABD.AM+BM=AB

2

-,$<h®3#,«18#)

11.B&:WM-3.6,7,-8.4,+10,-1,

12.«Tx2x+3m=4x=-l,

13.^(k-3)A2+3=0M-TG-Wïfë,Æ!l*=

14.B&®4>Z2=64°,flijzi

ÔÛÆM

F.F

15-{0<fê

&:A)

1768

14.557

A^12.5(^22^)(^22^

16.IEfS:3(tz-b)+(2a-i-3b)=

H.Â?T?Ü«-®(*®£8<b®,£72#)

17.(8#)M-ifcfclMjiîB!W~ME^â<Jé^:

(1)T#Æ£W4ffltHlE^fôWfffl(fflaj-^Bp-Rl);

(2)^jE^âùÀ4®±#5Ü^<^R)&<J»,

(Die3,-5,11,5,-11,-3#^»»^

jr4-IY—9

------Ifl——,3UW<â.

2------------3

18.(8#)M,OJiK-ÆMÿraé,O»A«ÏÂft.BCMfâ.BD^ftZABE-

(D^.ZCBDm^.

(2)ÏÏZÂBE=120°,XZCBAm®..

19.(8#)2019^11^160,Minâ^^iâ

20.(8#)M,^AB>CD.EFfàtt-tiO,CDEEF,OG^ZBOF,ZAOE=60°.

(1)^.ZBOG^m-,

(2)OBY#^DOG<Ç?iiWJMÈ.

21.(8#)B$flZCOD=90°,âZC0DM0MI^AB±.

ffl1

(DM1,

©âZBOD=20°H},Z.AOC°Î

®^ZBOD=55°^,ZAOCÔÜJÏ^°;

®%ZBOD=a,MZAOCtfyR&R#a;

(2)M2,ÏÏZCODfâfôülOC,OD#%!&&&AB

©âZBOD=28°30'fft,ZAOC&J%#&);

®ftl@3,SOBfèt&^ftZCODtt,ZAOCttm.°;

®ffl2*,%ZBOD=a,jUlJZAOC■

22.(105»i+31:(1)(-5.5)+(-3.2)-(-2.5)-4.8

3

(2)-14+l-jx(-l)

1171W11

++

(3)itM:4121836JA36JHXïïHA

23.(105»

-2X2-|[3/-2(X2-/)+6],M4«x=-l,y=-2.

24.(125»fclffl,AD=-DB,BE=-AB=2cm,^.^AC^DE^.

23

■____।i--------1-------->

ADBEC

-,ÆM«/b^35h^305»

1>D

[5>tfrlM/hfôMx,JüiJS^W^x+7,Xxl»

ÈÙWé1JS,

LWM1M:W»x,W^fôMx+7,

XVx>M,

HPA,CWês

M£63,ÜI!1W^^35,JWÆ,flf^RTfé;

^R<47^.

iKi^:D.

*®«T055±â«J^Z(siW-^W,

2.D

[WJ£^Wm»3%W./>

MJSM^rWHixÉKJ<,ÈlttHPnT^tB^.

[WM1WJ/httiS^&W^5x*/#,

ÈJSM:5-5x-5-3x=4(X),

fôWx=40,

JÜ!l5A=5x40=200(^),

HP/h#ffi^6ÜM^200

«:D.

[»]

3>D

iwi

[WM)M:V|a|>l,J@L|a|=-a,

•*.-a>l,

.’.a<l§Ka=l

«:D.

r^m

|a|=-aFH-,a<l.|a|=-aW,a<l;|a|=a

Btf,a>l.

4.B

[wwiJWWΣ1H«,me,IE^,

i$Æ:B.

[«]

M«T«—MWfr,SfflÉWWOMmW&2I®,

5>A

[##TInam».

[WW]W:90°—51°14'36"=89°59'60"-51°14'36'=38°45'24".

ï&fê:A.

M

6.A

«®ê:æiHi3££,if^BPnT^HK.

[wwimosM:-3+8=5,

MMÈ-3“C±^8“C>5“C,

ifci&:A.

[»]

7,A

[^wiaigjE^oW»<&Ü

tt^Wîâ^J^gpnTî®ÿg¥^MB^@»^J^rBPnr.

[WM]<D|tf|ê#m$RTfë^0,

®W^'È*Jfrfô|!Üt±l,«WM;

aiEfàâtiW14s

M:A.

[ûBfl

8>B

«»,ZBOC=135°,ZCOD=45°,maÆ¥#*W£5CWZEOC,iWmœm*

M.

[WM]M;ÈSW&,ZBOC=135°,ZCOD=45°,

VOET+ZBOC,

.’.ZEOC=67.5°,

.’.ZDOE=67.5°-45°=22.5°.

&fëB.

[«]

««TÆlWW,£¥#^£56^M»TOWZBOC=135°,ZCOD=45°.

9,C

[MW]VœWABCDfri,fëftAB,CBiWÆXtft^BD±,fëÿfMBEïBF,

.*•ZABE=ZDBE=ZDBF=ZFBC,.*.ZEBF=—ZABC=45°,tfàfeC.

2

10>D

[#wi

[WM]A,ÈAM=BMW^M«AB<f^

B,ÈAB=2AMWRIféÆABJ9f

CsÈBM=^ABPT^JÆâM^mAB+^>

2

D,ÈAM+BM=AB^nT^JÆ^M>^gAB^^,

0MABW,

W&D.

[«]

H^^C^jABtfâ,ÆlJAC=BCj&AC=-ABi&AB=2AC=2BC;MZ,

2

AB±,<AC=BC=—ABAB=2AC=2BC£—<SJWJ®TOABÔÛ't’â.

2

Z,«<h®3#,^18^-)

11,1

[#ffi]S(+10+7)-(-3.6-8.4-1)Bt,«BPTOM.

[WM]M;(+10+7)-(-3.6-8.4-1)

=17+13

=1.

1.

[âB»i

jEffiSMS(+10+7)-(-3.6-8.4-1)W,

12.2.

[fëJSMWMWÆX,4Ex=-l2x-3m=0SPTOtHmWfé.

(WM1Vx=-1<-%—2x+3m=4WM.

.'.2(-l)+3m=4,MWm=2,

2.

m

M®W£»<SM2rSWMWÆ£,

Wfi.

13.-1

[WM1v(k-i)?i-2+1=0,

.’.|k|-2=l,âk-l^O,

M^:k=-l.

am^-i.

[«]

14.58°

É^>W1É^WÆWÆX^2Z1+Z2=18O°,BPnT^Hi^>.

[WM]M:40»^:2Z1+Z2=18O°,

.•.2Zl=180o-64o=116°,

:.Z1=58°

58°.

[^B#]

A®«Tÿr>W14^WAWÆX.

15.1.

[^•W]m

[WWJfëh

6x+8y=17

È®^:<

5x+7y=14.5

x=1.5

WW

.}’=!

.*.l.lm+m=12.1,

WWm=l

1.

[âwi

16.5a

[#tff]»<ïW.

[WW]W:%R=3a-3b+2a+3b=5a.

5a.

[«]

=.WT^®($*®«8/b®,^72#)

17.(2)«(2)mW#r®x=-2

[#ffi](2)

(2)WW^;

PTW^XÔWS,migWM,

[WW](2)$n®:

(2)M,Je3,-5,22,5,-11,-3##J$LMnT:

»(i-x)

•kd§w^‘^OZ-^-WIe.‘^x*0fTOWLW1

Yoziiraww^K6i

•®¥50®^wra^^w*WmwmMOœS*

(WJ

Z

o0£=V9tV7~=V9377

39.V7=3flV7:.

o09=oOZI~0O81=39V7-o081=V9.V7'■

oGZ\=39V7:.(Z)

ZZ

0O6=0O8Ixy=(39V7+V9.V7)j=G9.V7+39,V7=G937*.*

0^\=39V7+V9V7:.

Z

39IV7-=G9IV7

39V^^an:.'^

Z

^93^7-^39^7V

jff<V7=3avznÿX&MM®^?d)[W#l

•«WVfl9ZfR^JailamW5tfgf»#Vff.V7W^JdoOZI=^ffV7M(Z)

nW<3937fiiɑo081=39V7+V9V7

Z

YSX‘39lV7-=G9lV7^^m^^m‘39V7OflVZ(D

o()f(Z)!o06(I)'81

[W]

z-=x

£z

T—:-1-—W

cxI+x

ç£

H-

30x=45(x-1)-15

MW:x=4

4x30=120(A)

g:»«m^lWA^120A

[â»i

A®,W^M.

20,(1)30°;(2)OB^ftZDOG,Sè»

[WJ(1)ÈWÆÉKM^MZBOF,ZBOG=-ZBOF,AMWW^;

2

(2)WfflMW£5CM:ZDOF=90°,^mZBOD=ZDOF-ZBOF,^ZBOD,ZBOG=30°,A

ffijnTWéniâ.

LWM1M:(1)VZBOF-ZAOE,ZAOE=60°

:.ZBOF=W>.

'.•OG^ftZBOF,

:.ZBOG=-XZBOF=-X60°=30°,

22

Z.ZBÛGÔÙMA30°.

(2)OB^ftZDOG.3SÈ&T:

CD-LEF,

:.ZDOF=90°

VZBOD=ZDOF-ZBOF,

:.ZJ5OD=90°-60°=30°

AZBOD=ZBOG.

VZ-DOG=ZDOB+ZBOG,

OB^ftZDOG.

21,(1)®70;(2)35;®90°-a;(2)®118°30';(2)135;(3)90°+a

(1)©ÈZAOC=180O-ZCOD-ZBOD^IÜBPBT;

®ÉZAOC=180°-ZCOD-ZBOD^LBBPRT;

(3)ÈZAOC=180°-ZCOD-ZBOD3&WRT;

(2)®MZBOC=ZCOD-ZBOD^H1ZBOCÔ»M$§ZAOC=180°-ZBOCZAOCÔÜMWnï;

®Èë§;t&ZBOC=ÿZCOD,j£tHZBOCWjOtSfêfëZA0C=180°-ZB0C;£HlZA0CfôOÆPRr5

®|g^ZBOC=ZCOD-ZBOD^{±lZBOC»,W$gZAOC=180°-ZBOCjfcHiZAOC

(WJtë:(1)®VZAOC+ZCOD+ZBOD=180°,ZCOD=90°,ZBOD=20°,

ZAOC=180°-ZCOD-ZBOD=180o-90o-20o=70°.

(2)VZAOC+ZCOD+ZBOD=180°,ZCOD=90°,ZBOD=55°,

ZAOC=180°-ZCOD-ZBOD=180o-90o-55o=35°.

(3)VZAOC+ZCOD+ZBOD=180°,ZCOD=90°,ZBOD=a,

ZAOC=180°-ZCOD-ZBOD=180°-90°-a=90°-a.

(2)(DVZCOD=ZBOD+ZBOC=90°,ZBOD=28°30',

ZBOC=ZCOD-ZBOD=90o-28°30'=61°30',

VZAOC+ZBOC=180°,

.•.ZAOC=180o-ZBOC=180o-61o30'=n8°30'.

(2)VZC