湖北省老河口市2023-2024學(xué)年數(shù)學(xué)七年級(jí)第一學(xué)期期末教學(xué)質(zhì)量檢測(cè)模擬試題含解析

2023-2024

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1.2019^12^50,a^rt?^<^g^?I^i5^^n?jE^?,?T\17700#.17700

()

A.1.77xl04B.17.7xl03C.177xl02D.0.177xl05

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5.M,^WJTWW^-léb^lE^SRW^^g/b,iêIEIt

A.B.

c.D.

6.M±±fe^ffi^473000()

A.4.73X105B.4.73*1&C.0.473xlO6D.47.3xlO4

7.()

A.è2x-3(4-2x)=5Wx-12-2x=5

B.è2x-3(4-2x)=5f?2x-12+6x=5

C.è2x-3(4-2x)=52x-12-6x=5

D.è2x-3(4-2x)=52x-3+6x=5

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A.14-B.2^~C.3^”D.44*

9.<)

A.a2—(a—b+c)=?2—a—b+c

B.5+?-2(3a-5)=5+a-6?+10

1,2

C.3a----(3a—2a)=3a—a——a

33

D.a'-—(-Z?)J-et'—er+b

10.?jMP(m+3,2m+4)￡y&±,)

A.(-2,0)B.(0,-2)c.(1,0)D.(0,1)

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11.^7üttl700^W*^S^45+,?a?&<-^I^?Rl?:in±'èK'tS^-,

12.2020^ffiR><.

13.i+?:0-3-(-5)=.

14.____________________________________________fi.

15.W^xf?#S2x+a-4=0f?M￡x=-2,.

16.30°,.

H,￡72#)

17.(8#)M,NMOA,0C±.fà￡,4&&OM,ONR|Bt#W307s,107s

S?S?Sffl?

(1)M?,^ZAOB=120°,'^OM,OMm$\OM\ON’tfc,

QfêOM,Z&20J,W\ZBON’+ZCOM'='

OM'AFfrZAOC,ON'^frZBOC,?&ZM'ON'&jfê.;

(2)M?,%ZAOB=4ZBOC,OM,ONftft?&ZAOC,ZBOCfyfafat?tt,fafafàZCOM5ZBON

(3)%ZAOC=80°,OM,ON&fat?tfà&S.^,%ZMON=20°,t=.

18.(8#)?ltfê?,6a2-2(a2-3b2)+4(a2-b2),a=--,b=3

2

19.(8#)^3?^^^!#^^?

A/VZSAAZV-

(1)

5678

(2)

(3)￡fflT2ooia*aW,?éKJSM+W

20.(8#)W,Rt_ABC^RtADEF,ZACB=ZDEF=90°,EFSC?R]-^M±,AB!!DF,FC=BE,

iQ&AD&ECTtiO.

A

Xi?:AO=!)().

21.(8#)M,^^ABCD^^^^^A(1,1),5(6,1),￡>(1,4),S.ABx&,

0

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3

2

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22.(10#)B&:OB.OC.OM.ON^ZAOD^m^.

(ifinSl,%ZAOD=l56a,OM^ftZAOB,ON^ZBOD,ZBOD=96°,■

(2)$n?2,%ZAOD=m°,ZNOC=23°,OM^ZAOB,ON^ftZBOD,$?ZCOMm

(3)M3,%ZAOD=15f>°,ZBOC=22°,ZAOB=30°,OM^ZAOC,ON^ftZBOD,'^ZBOC^ZAOD^

fi.

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(3)^A.B?W±M,aA^f?^W?-33,￡BW?^W?17,?-R/>MAIU

W6?W^lRl?,MP,A,BW<-M^X￡MWM,#ZWM.

24.(12#)B^fl>^y=2x+1.

(1)?RBftm^x?UkyttWMA.BW?;

(2)O^y=kx+b^B??fyW,$k*5bW?.

bA

^ie^üW?^^axlO"W^,l<|a|<10,fafenWW,WWM?altf,/J'

CW)M:17700=1.77X1.

A.

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o^?iaf?w?^s.^iaWéW?^?^axio"W^,x*i<iai<io,n^?,

2>B

[WM]M:MTOA;(D?dsTO^

￡nijmaf?￡-&M,WM?Ef?;WfcMféi￡;?MTO,

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MB.

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C.

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[WMlM:473000=4.73X1.

M:A.

[?fflf]

aW<nW<.

7>B

?m?wmsti,^s??wiimw.

[WM]M:è2x-3(4-2x)=l,2x-12+6x=l.

B.

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8'B

[WM]ABW^BA?,T?^.

(D^fn^A<m^lLA?<J^^rfDW.wi?mB;

90°/J^180°,'èf?-￥^45°/]'^90°,lEfà;

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iftiê:B.

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MWT^aù^X,Oi?WG￡?aù?X,xPFMWmMM,

9,B

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2

C,IM^=3a—a'+—a;

3

D,Mj￡=a3-a2-b

M:B.

10.B

[#tfrlW??yfcLbOPf?#?ltWMt?,WtàféaPW?BPW.

(W1M:vP(m+3,2m+4)aytt±,

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mm=-3,

2w+4=2x(-3)+4=-2

AaPè9??(1,-2).

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y1.

?/h?3#,#18#)

133

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O

133

O

133

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12,-1

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[#M1M:1f?ffiJ&??-l

-1.

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13,1

[#tfrl?ig<WWM^OJi+MBPW.

[Wl0-3-(-5)=-3+5=2.

1.

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*?±M^?WWtfj^?éi5g,?<WiW&isW#WJ>M??<j￡$l.

14,5

[^■tfr]è%B}￡+#WW#f?fàio,WJW?fêlR19^0tTO^T5oWW?,m

ElI1gp9/H^éKJ??,BPnmill

60

im?]fa;èM?T^ttfêlRlio,m^?féfà9/HW#f?^T30’x|^=25°,30o-25°=5°.

60

WWl^?>5?.

5.

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15,1

[#tfrlBPRT^HJ^.

(W3M:V^xa<J^2x+?-4=0è9Mx=-2

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MW:a=l

1.

16.jtf?$30°

[MflWt??gMtH2rt?ffl,MBPRTOJ^.

[W]W:MS+30°,

?$?30°.

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H.t?T^&?Cé*S￡8<h?,￡72#)

17.(1)@40°;(2)ZATCW'=60°;(2)ZCOM=3>ZBON,SMiffi;(3)3^5^.

[##rl(1)(D&^tHZAOM'.CON',S?￡tHZBON'.ZCOM',^Jéffiin#^ZAOB=120°i+WW

W?

?^è?￥#^tBZAOM'=ZCOM'=—ZAOC,ZBON'=ZCON'=-ZBOC,

22

ZCOM'+ZCON'=-ZAOB=—X120°=60°,BPZM'ON'=60°;

22

(2)1,<^tBZCON.ZAOM,^Js^S^t?OJZBON.ZCOMfi<j￡M,?OOTPTW;

(3)?^HJZCON.ZAOM,^WSlJZCOM,ff^^m^t?^JZMONMBPRPM

w.

CW)M:(1)?V^gOM.ON##J!U30°/s.10°/sfifj?^0mO^2s,

ZAOM'=2x30°=60°,ZCON'=2xl0°=20°,

.’.ZBON'=ZBOC-20°,ZCOM'=ZAOC-60°,

.*.ZBON'+ZCOM'=ZBOC-20°+ZAOC-60°=ZAOB-80°,

VZAOB=120°,

ZBON'+ZCOM'=120°-80°=40°;

40°;

?VOM'￥#ZAOC,ON'￥#ZBOC,

:.ZAOM'=ZCOM'=-ZAOC,ZBON'=ZCON'=-ZBOC,

22

ZCOM'+ZCON'=-ZAOC+-ZBOC=-ZAOB=-xl20°=60°,

2222

BPZMON=60°;

(2)ZCOM=3ZBON,

i$ZBOC=X,WJZAOB=4X,ZAOC=3X,

ZAOM=30t,ZCON=10t

ZCOM=3X-30t=3(X-lOt),ZNOB=X-lOt

ZCOM=3ZBON;

(3)ZAOM=30t,ZCON=10t,

ZCOM=80°-30t,ZNOC=10t,

RT^ZMON=ZMOC+ZCON,

Ri#:|80°-30t+10t|=20°,

t=3#^t=5%>,

3^5^.

[Ml

18>8a2+2b2;20

WtKhaùtt^à-H-^BPPT.

6a2-2(a2-3b2)+4(a2-b2)

=6a2-2a2+6b2+4n2-4/?2

=Sa2+2b2

a=.l,b=3ftf

2

/??

^=8x—+2x32

l2j

=2+18

=20

19.(1)11,13,15,17;(2)(2/7+1);(3)1000

(1)#M^m+MBPnT;

(2)(1)4’WWW^tB^?^^WH?M?M(2n+l)M?*;

(3)M(2)4’W^W2n+l=2001,?élWP^.

[W1M:(1)Wl^H?.W3^W;

<5?^#;

<3^=A^<7fê?#;

<4^=W.

Wllt?^W;

<13fê4dfcW;

^7^=A^><15m^W;

W8^H?^>W17m?f?.

&?2W&$DT:

5678

11131517

(2)è(1)-m^?^WWH?^M(2n+l)^^#.

(2/7+1)

(3)Va2/7+1=2001W,n=1000

A￡ffiT2001t?^#,MMS^^WIOOO^H?^.

1000

iam

20.WMW

ACB^ADEF,'fè$\AC=ED,SüEBMACO^ADEOBPRT^W-

(WM)üESJ3:’.’FC=EF+EC=EC+BC=BE

:.EF=BC

ABUDF

.'.ZB=ZF,XZACB=ZDEF=90°

.'.AACB^ADEF

#tiiAC=ED

XZAOC=ZDOE,ZACB=ZDEF=90°

.'.AACO^/XDEO

:.AO=DO.

21,(1)3<h<6-,(2)a=2,b=4.

twi(i)

H,Z???fflTO.

(2)^Jg^PM^W^SijQM^,t?im?HOJcf??,WWM

[W](DVA(1,1),B(6,l),D(l,4),S.P(a,b-2)^^ABCD^-^,

:.l<a<6,\<b-2<A.

.*.3<b<6.

(2)è?pmaew?^(?-8,z>).

AC(6,4)

’.^e(a-8,^^C(6,4)^fy

.'.?-8+6=0,b=A.

.*.a=2.

:.a=2,b=4.

[?]

22,(1)78°;(2)-m°-23°(3)^/=——W,Z.A0M??ZDON

23;3

(1)èOM^ftZAOB,ON^^ZBOI),faZBOM=30°,ZBON=48°,jt??nBPTOM;

(2)èA￥#^f?féj￡WZBOM=-ZAOtf,ZBON=-ZBOD,$￡fàfêZMON=-m°,

222

(3)ZA()M=(26+t)°,ZDON=(63-t)°,ZAOMZDON

mwfê,gpnnRt?.

[Wü?1<D'?ZAOD=156°,ZBOD=96°,

:.ZAOB=156°-96°=60°,

'.’OM^ftZAOB,ONZBOD,

:.ZBOM=30°,ZBON=48°,

:.ZMON=ZBOM+ZBON=78°;

(2)’.’OM^ZAOB,ON^ftZBOD,

11

.‘.ZBOM=-ZAOB,ZBON=-ZBOD,

22

111

ZMON=ZBOM+ZBON=-(ZAOB+ZBOD)=-ZAOD=-m°O,

ZOOM=ZMON-ZCON=-m°-23°;

2

(3)VZBOC&ZAODOt^,

:.ZAOC=(52+2t)°,ZBOD=(126-2t)°,

'.‘OM^ftZAOC,ON^ftZBOD,

ZAOM=(2f>+f)°,ZDON=(63-t)°,

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