湖北省襄阳阳光学校2023-2024学年七年级数学第一学期期末学业水平测试模拟试题含解析

2023-2024

1.WWW-».

2.£w-o-«êaw&£>a^wfflo.

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4.WÆmë,

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5.^ffl2B®^è,W£,M.

-,Æ»®:*A®«i24vh®,$<h®3#,«365h#«/b®£tHfôffl'bÆW,

1.26cm,W\cm,%M12cm,Wl^-^jE^.xcm,

HORT^J^S^()

A.x—1=(26—x)+2B.x—1—(13—x)+2

C.x+l=(26—x)+2D.x+1=(13—x)+2

2.±^9£30#>()

A.105°B.90°C.100°D.120°

3.Ma,b,3PA«|a-c+b|+|b+c-a|â<JMM()

A.-2cB.2bC.2a-2cD.b-c

4.AEffiWAW,()

A.

B.

c.

D.

5.()

A.IfôB.2fôC.3feD.

6.()

A.0.350>fihOJ0.001WiÆW

B.3.80^>ffi^SlJ^fôÔ<jiaW

C.iM26.9.*526.90^&O5CfêRI

D.ÆW2.2OMÈ^«H^£A^|JW,3PA^«m®?SHë2.195,,«<2.205

7.64ÔÙMA¥A®A()

A.8B.-8C.4

8.ab=a(\-b),@2(-2)=6,®a+\~a-l^-a2-a-,

®ab=ba-,®%a+b=O,WJ(«b)+(ba)=2b2,()

A.l'bB.2YC.3YD.4Y

9.M,OBC^MNMf^iO,AO±BC,OEY^ZBON,£ZEON=20°,WJZAOM()

a+2b,ftfta+bMXttïK,WJfSSC^YÆO^()

aba

A.1B.2C.3D.4

11.TJm>Y,Wffl“iWÆZl'â],W®”YMWÈÜê()

A.o«8

D.

12.Os>()

AB

C.-D.A

B

=.,(«4^,W#205h

13.^^^2x4-(a+l)x3+(b-2)x2x’Wx2®,Mab=.

14.A,B,b,c.MYAB=2017,BC=1000,

(1)BWJa+b+c=.

(2)51iJ|a|+|b|+|b-c|=

icco

ABC

abab

15.4a,b,c,dM22ÿij,>=ad—bc,<■=6,

cdcd-12

16.Suffi,»±^LB,BAiW&â&Æc,

CAB

_|---------------1------------1------------1--------------L_

01Æ2

ax+by-12

x=3

1,JÜ!|a+b=

(a+b)x~—ay=13l>’=2

18.(5#)BfthSuffi1,c.DÏÏiïMM.BtifâMlcm/s.3cm/s

ZMIRÆJS^,îë^[R]Sn^^fzjs(CÆ^A/W±,/)î^â/ÎAf±)

(1)^AB=10cm,Dis^jT2s,^AC+MDftMt.

(2)^âC.,Ê.WMD=3AC,AM=AB.

MN

(3)^(2)S.AN-BN=MN,------$J<.

AB

•<------------------------------------

I______I_______I____________I____________I

ACMDB

J

B

19.(5#)IWS:

(l)4x-7(x+2)=3-2(x-l)

2y+ly-1.y-5

(2)—-----+-------=2---------

3412

x—12x—3

20.(8------=1-—.

32

21.(10^-)Suffi»S.AC:BC=}:5,

A

-*—>

Tïï14

22.(10^)^B:

(1)3(x-3)-2(5x-7)=6(1-x);

,x2x-3x-5,7-3x

263

23.(12#)B&:¥ffi±<A,B,C,D,

(l)M^BC^$mADfâtfÜ

(2)ggAB,AB^&E,fê_BE=AB-,

••

AD

F

->O®:12>M>®,«<h®3#,RW-JO^'ê-SS^m

1,B

-fe^â<J^-lcm=^^W^+2cin,MÏSOJ^BPnï.

[W]M:^-fe^ÔÙ^xcm,JÜIJ^^(13-x)cm,

dé^âÙ-lé-lcm=^^È<J^+2cm,

x-l=(13-x)+2,

iftife#:B.

[Æffltl

2,A

CW)WW^W0.5°,W^W^6°.

ftf270°,WfrÆMM,

A9IOJ9Itf3030X0.5=15°,30x6°=180°,

JÏÜJÆ9Btf30^-,Htfü-ÎËWmT270°+15°-180°=105°.

A.

3,B

[#tfr]b+c>a,mfta-c+b>0,b+c-a>0,

fôWKftfôW.

[WM]M=Va,b,c£M=W=M

'•a+b>c>b+c>a,

.’.a—c+b>0,b+c—a>0,

.’.|«—c+b+|ZJ+C—«

-a—c+b+b+c—a

=2b

tfà&B.

[âffi]

4,D

[#ff]rasœmt

[WMlM:fô-fêSifeRJM

W:

$.&:D.

[«]

5,B

[MtfrlOTW:

M:2,

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OW:

6,C

[##T1

[WM]A.0.350MfêiOJo.001mm,jE^Ê;

B.3.8075>^OJMfôÉKJOm,M;

C.jÆ»26.9M®J+^fô,26.90M5ÜÏÏW,

D.ja»2.20^È^«ra^EAW®JÔ<J,2.195,,«<2.205,1E^;

^±,iâC.

7,A

Œtfr1

[WM]64TO¥»8,

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(Mi

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8>B

[##f]WB»-^i+3£WBP<

[WJ'.'ab=a(\-b),

.-.2(-2)=2x(l+2)=6,#«

•.•«+!a-1—iz+1x(1-zz)-l=0,Î&(2HHT^;

Vab=ax(l-b)=a-ab,ba=bx(l-a)=b-ab,:.ab^ba,

'.'a+h=0,.‘.(a/?)+(/?a)=cz(l-/?)+/?(l-t/)=cz+^-2cz/?=-26z/?=2iz2,îft(4).iE^h

ÜLtmiÈ,

B.

[âSfl

T«MisJ?,

9.B

[MtlrXÆœAWY^WM^ZBON,&JémfêZAOM=90°-ZCOM

BPPT^M.

(WJVOEWZBON,

.’.ZBON=2ZEON=40°,

.’.ZC0M=ZBON=40°,

VAO1BC,

/.ZAOC=90°,

:.ZAOM=90°-ZCOM=90°-40°=50°.

ŒM^ZMOC

10,c

[^tfrlÿfj^W^^âÜffi^Æ(a+2b)(a+b)=a2+3ab+2b2,aWiE^,2^ià^bfôlE

3^C3ab.

[WM1(a+2b)(a+b)=a2+3ab+2b2.

H!lRgC^^«^3?fe.

C.

11,A

[W]

M:A,m

r^J^A.

[«]

12,B

mæm,^WÆ^IJKBPBT.

rwiRWB^immEFtÈFœw,nr-^s^AB^^

B.

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z,«s®«®4#,w#2o#,

13,-2

[^]

^MBP^.

[m1ZZitâ2x4-(«+l)x3+(b-2)x2-3x-14>^X5X2

■'a+l=O>6-2=0

a=-1,b-2

ab=—\x2=—2

titëlî&h-2

LâBtl

14.-12

[5X1(1)WxtBA.CBtm

(2)IâO$A,BM^ZfB],|a|+|b|=AB,|b-c|=BC,

[W1Æ?:(1)VÆB^Mâ,AB=2017,BC=1000

.*.£A&âW^a=-2017,£C«^È«J&*c=1000,

IUB^JMÆ,âA,Ca=-2017,c=1000,

.'.a+b+c=-2017+0+1000=-l.

(2)Vg^A,BffiÆZtâ],

:.la|+|b|+|b-c|=AB+BC=2017+1000=2,

|a|+|b|+|b-c|âùa^J2.

-L2.

5

15.-

3

xæj#®,

[WJM:lÜÏ^P:2(x+1)-(-1)(x-1)=6

2x+2+X-l=6

£•#1^151»»:3x=5

m-.X=-

3

-

3

Lâlüt)

Mm

16,2-V2

[W]^:VMt«jU,VÏBWJOM^A,B,

.'.AB=72"1,

&BAcx,

Wx=2-V2.

ttâcM»2-V2•

titë&h2-72•

[ABfl

17,1

^fij^a^bfô-TË-ïfcfrm,sww.

|y=2

ax+by=12

z,,1

[y=2(a+b)x—ay

3a+2b=l2rn

a=2

3(a+b)--^x2a=13b=3

••a+b—2+3—5

1.

[âm

*®«T-7É-^m6Ù^â<J^,b“x-^

H,(AA®£7/h®,#64#.të^WHE^WÆ,üE^aS^^m)

11

18,(l)2cm(2)-;(3)-^1

;42

(1)BDÈÜ-fe,

(2)Æ^tBBD^CMfô^,RÎW;

(3)NABNABW

[W1(1)Dîs^T2sitf,CM=2xl=2(cm),£D=2x3=6(cm)

’.’AB=1Ocm

;.AC+MD=AB-CM-SD=10-2-6=2(cm);

(2)BD=3CM

MD=3AC

:.BM=BD+MD=3CM+3AC=3(CM+AC)=3AM

:.AB=AM+BM=AM+3AM=4AM

&AM=-AB-

4

(3)M,SâN»AB±Bt

I_____________I_______________I_______I

4Vf.VB

'.'AN-BN-MN,AN-AM-MN

BN=AM=—AB

4

:.MN=AB-BN-AM=—AB

2

MN1

BnnP-----=-

AB2

M,âÆNa^ABimÊ-fcâLtitf

I_______________I_____________!____________I

AMBV

VAN-BN=MN,AN-BN=AB

NMN=AB

MN,

apn—=1

AB

.MN..1„

^±»------§K1.

AB2

19>(1)X=-19;(2)y=-

3;

(1)BPPT^W;

(2)i,

[W1(1)4x—7(x+2)=3—2(x—1),

4x-7x-14=3-2x+2,

4x—7x+2x=3+2+14

-x=19

X=—19;

4(2y+l)+3(y-l)=24-(y-5),

8y+4+3y-3=24-y+5,

8y+3y+y=24+5-4+3,

12y=28,

7

J-3'

[«]

20,x=—.

8

[Wltëh^2(x-l)=6-3(2^3),

éfé#,W2x-2=6-6x+9,

ff2x+6x=