湖南省株洲市株洲縣2023-2024學(xué)年七年級(jí)數(shù)學(xué)第一學(xué)期期末達(dá)標(biāo)檢測(cè)試題含解析

2023-2024

i.

3.^émOmmBoh??.

->?&?:*±WU2>Nb?,$<hJS3#,^36#.￡?/b?￡Hm0'NfcW,RW-?>m0m

1.lUTfà?,S^fflW?W()

A.B.llccrn

c.D.

2.B&ZAOB=120°,ZC?r>?ZA?5rtMZCOD=6()°,JRUZAOD^ZCOB^JèW?f?^M^().

A.ZAOD=ZCOBB.ZA0D+ZC0B=120°

C.ZAOD=-ZCOBD.ZAOD+ZCOB=180°

2

3.àTlWlEê^^MH^nT“S3e”&23=3+5,33=7+9+11,

43=13+15+17+19,?￡/n3“?”JB,X+W-^^2019,Jü!|m()

A.43B.44C.45D.55

4.3^30W,)

A.70°B.75°C.80°D.90°

5.M,?AABC43,DEMACa9MY^,Ja##J￡BC,ACT^D?DE,ZB=60ZZC=25°,JüüZBAD

()

C

A.50°B.70°C.75°D.80°

6.JnOg3x-m=2?2,M()

A.4B.-2C.2D.-4

7.30cm,1cm,Mil!2cm<PT^-ME^,xcm,

WJAfêA()

A.x+l=(30-x)-2B.x+l=(15-x)-2

C.x-1=(30-x)+2D.x-1=(15-x)+2

8.iox+6=i2x-6^-mffl?:mm,,n

A.$n^A#io^,$nM<A#i2&,>^^6mm*#

B.M<A#iomMKT?WMft;$nM?A#i2?,Mimim

c.M?A#io?,^AfflT?mm*#;W?A#12?,ife￡?T6mm*#

D.$n>$A#io^,mum,R|#O^6Wffi

9.afczfcTXM~7ü-&AS2(x-1)+3a=3MMA4,MaMM()

A.-1B.1C.-2D.-3

10.KW:0,-1,-2,-3,()

A.-3B.0C.-1D.-2

il.￡O?AM?I&,cêffl^ft^MgM,Ma2018+2019￡>+c20'8MMA

A.2019B.2014C.2015D.2

12.(>

A.O^M?t;B.-?MO?lc.tf3+-?=&Zl?D.3a2b^-ab2&^^

a

-,W#20#,

13.?A:

^H?O"RJMA=:0".M,?ü-tèAio

aMO

14.^B^x-^=|MA?￡_________________;

15.^mfnMWMiio?,?MM/k?WBt,WM10%,?fêftMWMWATG.

16.XMASax+4=l-2xMMAX=3,?üa=.

17.$nM1?M6iP?zk,iaft+?in?,Wk'fè&ii?ik,?ft

18.(55?B&?Oil^AB±W—?,ZCOE=90%OF&ZAOEf?Y5?l.

(l)^aC,E,F?OAB?ùRMCftl?1tfraW,$WZBOE=2ZCOF;

(2)%üC^E,FWABmM2j^)ltf,(l)4’a<J^?ù>^W^±?if^l±l^at^iù?0?Sè;

2

(3)^?2^aWasOF?taOWf-lf-Wm°(0<m<180°)W^OD.T&ZAOC=n°ZBOD=(M--n)°,^ZDOE

3

(ffl'a-??j5￡T?^)

19.(55?

(1)168km^Wüfe^BtfB^lRjWf?,10km/h,iWzhHWWWa,

(2)^T7KW??è?|5AWeS^W^3^^,WW$T|JB,

ZxfAinà,A￡-iS?m,^WiiefiW.

20.(85?4t?H?^<:X2-(5x2-4y)+3(x2-y),^4>x=-1,y=l.

21.(105?BfclhA=3x+2y,B=4x-2y,^A-2B?ù<.

22.(105?AC±AE,BDZBF,Z1=35O,Z2=35°,ACBD^W&tfAEBF

@^Z1=35°,Z2=35°(B^I),m^Zl=Z2.^flA___//___().

X0^/AC±AE(B^),^f!UZEAC=90o()

ffi\^ZEAB=ZEAC+Z\=\25°.

^^,ZFBG=ZFBD+Z2=_°.

ffiVkZEAB=ZFBG().

W___//___

23.d25?A(??^);B(m?E),c?mm?!D(iRjaw^)

a

￥>‘￥*?WITOlI??￥WWMW

‘OS-W?m?￡MWIOm?OWIMOt?I?#WXim

[WJ

3:W

WWWWr??'a

sWètf^‘imWWWW'□

‘5?#?^W?<S￥fe&H4>)IA133>èft'fl

:?&Wi￥^kv:W[W￡]

'￥Y^W‘WW&'KLWI

3'T

‘+?^EIWWW^W^9S^‘^￡?4z>‘?MAK?￥?￥#:WO'-

iY<P^^^Wg^?F(^3EW?)gtW4>^[W￥slK‘^^OfrsMW^q-Mt^P(fr)

:?+Waé^Mr?￥#WWT??i?M(￡)

:WWW^'ElW^WMW^g^Ou^)‘4HSS(￡)

s=U‘=Ul(?)

:?feir^±^0‘WWTKl^W?(￡E‘lE)HWO?iWB?i^‘(S4tW^tB§4

?THZAOD+ZCOB=ZAOC+ZCOD+ZCOD+ZDOB=ZAOB+ZCOD,SfW+M

[WJvZAOD=ZAOC+ZCOD,ZCOB=ZCOD+ZDOB,

ZAOD+ZCOB=ZAOC+ZCOD+ZCOD+ZDOB,

=ZAOC+ZCOD+ZDOB+ZCOD

=ZAOB+ZCOD

*.*ZAOB=120°,ZCOD=60°,

ZAOD+ZCOB=120°+60°=180°.

D.

3,C

[^1w?,?TOMW?S^ftiW2019

1008^,lOOsmMf?HBPWW.

[W1v?>2^?2^<^,

flfia,2+3+4+...+m=("?+2)(m~1),

2

V2n+l=2019,n=1009,

2O19^A3?WJ^1009>bW^,

am=44M,(44^)(44-l)=989|

2

i/nu.(45+2)(45-l)

am=lB},--------21-------L=134,

2

1009i

BPm=l.

?:C.

4'B

V3^30Wta?2+-=-,

22

30x—=75°,

2

l?fc&B.

[?]

5>B

W:DA=DC,fê?W=AW1O^?!lZDAC=ZC,

??S^tBZBAC,i+MBP?T-

W:VDElACKlOY^,

.*.DA=DC,

.’.ZDAC=ZC=25°,

VZB=60°,ZC=25°,

.’.ZBAC=95°,

ZBAD=ZBAC-ZDAC=70°,

àfcifeB.

6>A

[^1^x=2^à^SBP^MlJ^m.

[W^]^x=2^à^,^6-m=2,

.*.m=4,

A.

[?]

&iB2f￡BPW^.

7,D

WèIE^WH^iàM^tH^BPnr.

[W]V-fe^?ù^xcm,30cm,(15-x)cm,1cm,

jfeifill2cm.’.x-1=15-x+2,?&J&D.

8.B

LMtfrlS^tFf^BW?,BPWHl￡te.

7?^10x+6=12x~6,

W&B.

9,A

[Wffiliex=lftà2fg,BPRT^lJ-^TaBPPIW.

(W1ffix=4ftà3rS1f2(4-l)+3a=3,

a=-l.

Sfc?:A.

IMI

WeiWtt.

10,A

[#Wr]m?<S&*/bHs&élüOLBrtfo,?zbTo,

[#$?]V1-21=2,1-11=1,1-11=1,

??O1<2<1,.‘.-l>-2>-l

?*.0>-l>-2>-l

?ftf?:A.

[?]

OrtTo,M<hTo,

11,D

tefüa,b,cWM,ftàlM^i+?BP

)W:a=-l,b=0,C=l,

WM^;=I+O+I=2,

i&fà-.D.

[am

WS^?ifê?tfca,b,c

12,A

r^wiA,B,c?mg,

LWMlA.@^W-Mfc1ènT^^^,AiOM

BW?mWW?-bBi4W^;

a

^W3a2Z^-fl￡>2^>I^J3b

fàfà:A.

rartJ

?MWWWWMlWM.

-,(W4#,W#20#,^^I?^?±)

13,1.

[##f]WWftHftFWn^m?￡1l3O.

[WJ?r‘MM^H;O”f??5üiW:a=l.

^^1.

14,x=2.

(W1M:iW#:5x-3x=4

2x=4

X=2

X=2

[?]

15,1

CW)M:mmix7C,è?tW:(1+10%)X=110x0.8,M?x=l,

17ü

1.

[?B#1

16,-3

I^tFrlV^^?8ox+4=l-2xW^x=3,

.’.3a+4=l-2x3,t??W;a=-3.

-3.

17,-2

LW1?MSB,BPW?B^.

[WM]?MSB,U￡j6HfcK,ifiW+?nS,m?2H$,zKiBW-2^,

-2

[?ffltl

#S?ffliEM^AW?&B5C?jS,?fà,*fi&iP,?*MS￡:?.

H,M^S(**S?7/bS,#64#.M^WH￡fcWJ,)

18,(1)?Mtff;(2)faL,Sè?M^f;(3)(30+|n)°

LW](1)&ZCOF=a,K!|ZEOF=90o-a,?M?WalM^HdZAOF,ZAOC.f?tüZBOEWn?-,

(2)ftZAOC=?,^.?üZAOF,f?&ZCOF'ZBOE.BPnJMtB^;

(3)^ZDOE=180°-ZBOD-ZAOE^ZDOE=ZBOE+ZBOD^iZAOE=90o-ZAOC,fVUWP?T.

[#M1M:(1)T&ZCOF=a,^ZEOF=90°-a,

’.’OF^ZAOE^^.,

.’.ZAOF=90°-a,

:.ZAOC=(90°-a)-a=90°-2a,

ZBOE=189°-ZCOE-ZAOC,

=180°-90°-(90°-2a)

=2a,

^ZBOE=2ZCOF-,

90°-B

(2)M:T&ZA0C=p,JüIJZAOF=-----^-,

.?.ZCOF=45°+^-=—(90°+p),

22

Z.BOE=\89°-^AOE,

=180°-(90°-p),

=90°+p,

:.ZBOE=2ZCOF-,

(3)M:

EE

ZI)OE=1X()-ZBOD-ZAOE,

,2/7.

=180°-(60-—)°-(90°-n°),

3

/5X

=(30+-n)°,

3

2/7

M4,VZBOE=180ü-ZAOE=180°-(90°-n°)=90°+n°,Z_BOD=(60-—)°

3

2/71

ZDOE=ZBOE+ZBOD=(90°+n°)+(60-—)°=(150+-n)°

33

^ZFOD<180°fà,WTO-ê-M,

(30+-w)

3

[?]

19,(1)37km/h;(2)MT13*.

r^tlTl(1)^^MMxkm/h,?Mit,é^mfê+Z.ms=168krn^g,^SBPRT;

+Zxiw=i^j^?,fêmgfw.

[W1(1)M:Xkm/h,

WM,??2x+2(x+10)=168

Wx=37

37km/h.

(2)M:iSmffiTx^,

WM.

1XX,

-+-+-=1

535

f?x=1.5

Z.PA>T1.5X.

20>-x2+y,2

[##rl?Mx=-2,y=2RAi+lfW;

[WM1M:x2—5x2+4y+3x2—3y

=-x2+y,

x=-2,y=2Bt,

J^=-2+2=2.

[?]

21>A—2B=6y-5x

[##r]apnT^SJ^.

[WJM?:‘:A=3x+2y,B=4x-2y,

.’.A—2B=3x+2y—2(4%—2y)

=3x+2y—Sx+4y

=6y—5x;

22>AC;BD;iOalW;M^5C;125;