浙江省德清县联考2023-2024学年数学七年级第一学期期末学业质量监测试题含解析

2023-2024

1.WWW-».

2.£w-o-«êaw&£>a^wfflo.

3.iWUMW«MÆ^®-^±^mW^M±âû^^>

4.WÆmë,

&%%05

5.£nHM,^ffl2Be«^W£,M.

-,»®:*A®£i2>Nh®,$<b®3#,£36#.Æ</bmHdiftE^^,

1.HB1()

A.a#r<«iOfô^4'>MM

B.%&AB^&BA^ïïm%%&

C.W&AP=PB

D.^AP=BP,

a&x-y=;Lm-(3-x+y)^^^<>

2.

5599

A.—B.-C.-D.----

2222

3.i+M-2-|-3|^>A()

A.-5B.-1C.1D.5

4.MW-AÔÙftS^A2’C,«miaA-8”C,WJ^AÔÙft^^ktM^ia»()

A.10’CB.6’CC.-6’CD.-10’C

5.)

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

6.)

2

A.x=3x+3B.3x=x+3C.2x=3D.x=3x-3

7.3^-^gT*WJ8>bWt0],^>»4’<50rn2^ffiAAmWJ;IBJWW

fàrt5£-MlOJTa^WJT^^&Ù40m^ffi,10m2

iâffi,WWWOSW^xm2.J!iJTyüWAfêiETO>()

3x-50_5(x-10)+403x+50_5(x-10)-40

8“108”10

8x+5010x-408x-5010x+40

C.----------=------------+10D.------------=-------------+10

3535

A.Za-^pS^B.Za-^ZpS#C.Za-^Zpffi^D.ZatEZp/b

9.(

B——ra£À

13456

78910II1213

14151617181920

21222324252627

28293031

A.39B.43C.57D.66

io.H»!»(>

A.-ytfj£M.-i,ÿ&tâiB.

c.5WMWI).£W2x2-3x-5lW&>2.WW-5

11.^M^AM-7c-^®ar+Z>=0M^x=-2,Mfê«(y+1)+6=O|W>()

A.y=-lB.y=-2c.y=-3D.TWfêS

12.m^l207ü-^^.aœTSWâ<J8ÿTthW,WM20%,()7Ü

A.180B.170C.160D.150

«S®(*S®4#,W20#,W^«Æ^®^±)

13.ftSCD^fôZAOB^Æ,OC^ftZAOB,fclffl®,fàZAOB'fèOCÏÏÏÏfàZCOB(OAOB&&),AO&

Ï\~%W&OE,&ZBOE=-ZEOC,^OEiRm,JHÏOJÈÜ380°,UO

2

14.MfàWjÊ10#ie$j-10#,mfàibÊ5

15.fêÆMæjiO&M-Ohisw_

16.BfcJWH&a,b,cfâ&a+b+c=Q,Rabc*Q,IP^M+H+kl+W.

abcabc

17.»,%D>AB+E^BCfô't’Æ,AC=8,BC=5,JÜ!|AD=.

À**7c

H.(**H#7/h®,ÜE^agOSÿ^.)

18.(55»»®:

»,îSfflMR^IOftfHmACflJAD,(W^W,RfflTÆg»«)

(1)&AC=2a+b

(2)&AD=2a-b

I______c_i_____II___h___I

121

19.(55»(1)l+M:(-------)-T(-—)+(-2)3;

2318

(2)W^jfg:2x-—=-l.

2

20.(85»W,SM,-a2/>-[-a2/>-<Aabc-a2c)+4o2c],£4>a,b,«Æ£fr,yKcx2«+2y2

22C

S-4x/+4W^n^ji.

21.(10ft)xâÜÆ’ë4x+2m=3x+l3x+2/7?=6x+lÉKjMffiR-

(1)â<j<;

(2)M^(2m-2)2°'9M.

22.(105»^m»f¥,600

TÉ,<^S^518TU.

(I)!üiJ±^WTâ<iS^#^^7ü?

(2)50%

zK^M'È^ffl^ioOTü,

23.(125»»,BMA>B.C.D.EÆR)-<^±,S.AC^BD,

(1)WBÈ;

(2)^AD=30,AB=904,^&:BE^&.

ABECD

i,c

[WJæ-MM<^WPnT.

LW1A.ëflfWiÊgWâfôtl*,m£S&,

B.^ABWBAMI^-^,#iWWi£;

C.MÆ/’WABflWÆ.W&AP=PB,iOi^Oh

D.MAP=BP,SP^ÛP^-^mABW+â,

ifà&-.c.

2>A

LfcWlJE-(3-x+j)£fê#,MX-J=|^ABPPJ.

JM^=-3+x-j,••’*-J=p••.^=-3+y=-|,&&A.

[£»]

3>A

[^iTOm-Nrspni.

[WJM:-2-|-3|=-2-3=-5,

tt^^A.

[£»]

4,A

WM:2-(-8)

=2+8

=10CC).

A.

Affi:«WW»

5>D

[#tfrlÉMsWMmim.BPnTW»^.

LWMJM:Mï^aWItë-lî&»35

D.

[âffii

6,A

2

[WM)M:

A^Æx=--^A^Steià^T^ià,iï.A#

2;

3

B<Kffix=—&Bfê

2;

C^.Æx=--^A^gtejà^^Ü,&Cfê;

2

D*.=ï&Dfê.

2

A.

[£»]

^®«^®WMÈÜ^îR,MB^ÆTJExnT.

7>D

2Y—5f)

[Mtffi——m2>

10x+40

-----------m2,10m2,nT^ll:

8x-50lOx+40

--------=-----------+1i0n.

35

D.

8'C

[WMlM:

VZl+Za=Zl+Zp=90°,

.'.Za=Zp.

&fëc.

[«]

&MiW^mn^T90°(Ift),MW&I::

9.B

[MtfiW^B^^W^x,WJM*WM#Mx-7x+7,=MfôM3x,@$x«Oflîl3x>tÈM3

B.

10.c

[##f]«mœmibaI^W£«^JWBPnT.

(WM1A.-JMWM-b

B.^ïUV’ITOô,jEfô,

C.5>«£,

D.^^2x--3x-5^^2,MM-5,iEfô,

«:C.

[^m

IsJ^ÔÙ^^iR^,

il.c

[^tfr]Wy+l=x=-2,BPnT^tByM.

[WM]M:£y+i=x,WJ

a(y+\)+b=O^'^:ax+b=O,

V—%—ax+b=0WM^x=-2,

:.y+ï=x=-2,

y=-3;

c.

12,A

r^tFflW^x,

[WMlM:OMfpffMmxTÊ,JÜ1JW^80%X7Ü,

É®ÜM:80%x-120=20%X120,

MM:x=l.

BP^jgWnnn#m™17Ü.

iftfë:A.

râ»]

-,«S®«®4#,W#20#,

13,120

ÉOHZBOE=-ZEOC,ZAOE'=-ZCOE',ZEOE'=SO°,

22

.*.ZCÛ£'=ZCO£=40°,

:.ZBOE=ZAOE'=20°,

.‘.ZAOB=20°+40o+40o+20o=120°.

14,5X

[##T]mM^RPôL

[WM1M:10-io#,miRldb^5#Æ^5#.

5#.

[£»]

MSÔtë^iEfôllM“1E”fl“$•”

15,PM

[5>t)T]IgHfîM^gpnl.

[WJVPM1EN,

.-.PM^aâêa,

«PM^MUS(»ssm

16,1

b,c«Æ:a+b+c=l,nBWHba,b,cMM^l^Z^,&j5#£4tfôBP

PT.

[WM1M:V#^W»a,b,C^Æ:a+b+c=l,abc5^1

.'.a,b,l'MU'iS

Sa,b,c+»âÙW^lW,

IM^=-1+1+1+(-1)=1.

Sa,b,c2W,

IMï£=-i+(-1)+1+1=1.

1.

[«]

*B±£«fô£$HÈ4tfô,ftèa,b,

17,1.5

™««AC=8,BC=5^tHBCW-fé,SÈDlABmAD!$•£.

[WJVAC=8,BC=5,.*.AB=AC-BC=3,X'.'D>ABW4>^,/.AD=1.5,^^1.5.

Lâffi]

H,

18,(1)^wtlf;(2)

[^i(i)mw.

(2)rëiOnr.

[wi(i)M,

4*---------)-------*î—1ë—

(2)fclffl,

19'(1)-5;(2)x=-1.

(2)iBPRT.

12

[WJ(1)J^=(---------)x(-18)+(-8)

23

12

=-x(-18)--x(-18)+(-8)

23

=-9+12-8

=-5;

(2)W4x-(x-1)=-2,

4x-x+l=-2,

M,W4x-x=-2-1,

@3x=-3,

Wx=-1.

[«]

,,15

20'-ab+3abc-5a~c,—

2

(W1ÆWWmiHb'c^a,^È^âùinMvg'ê-isMS^fS,^«Ai+M,

IWtë:cx2“+y-4x/+4=l,

:.2a+2=l,b+4=2,c-4=l,

.'.a=-----,b=-2,c=4;

2

13

—a2b-[—a2b-(3abc-a2c)+4a2c]

22

13

=—a2b-(—a2b-3abc+a2c+4a2c)

22

3

——1a2b-----a2b+3abc-a2c-4a2c

22

=-a2b+3abc-5a2c.

je«=-|,b=-2,C=4KA±^W,

jg^=-(--)2x(-2)+3x(—L)X(-2)X4-5X(—-)2x4=—+12-5=—.

22222

21,(1)-;(2)-1.

2

r^wi(i)

(2)m

M:È4x+2m=3x+lW4x-3x=1-2/77,MWx=l-2m,

1—2/77

É3x+2m=6x+1W3x-6x=l-2m,—3x=l—2m,Ox=-----------,

3

1-2m1

W»Wl-2/77=------—,MW??7=-,

32

ÔÜW*3—;

2

1(1A2019

(2)&m=-RA(2m-2)#2x--2=(-