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???2014????????????????????
??????
?????(???3?,?30?) 1.(2013????)????A.x>0
B.x?-2
???,?x??????( ) C.x?2
D.x?2
2.??????????????( )
A.???????? B.?????C.??????? 3.????????( ) A.
D.
=4
B.
+
=
C.
=2
D.????????
=-15
4.(2013????)????????????x???y????,??p???( )
A.1
B.-1
C.3
D.-3
5.(2013????)???10????5????????,???10???5??????????????( )
A.2400??2400? C.2200??2200?
B.2400??2300? D.2200??2300?
6.???ABCD?,???AC,BD????O,?????????????????????( ) A.AB?DC,AD?BC C.AO=CO,BO=DO
B.AB=DC,AD=BC
D.AB?DC,AD=BC
7.(2013????)??,??ABCD?????????O,?AC=6,BD=4,???ABCD????
1
( ) A.24
B.16 C.4
D.2
8.??,?ABC??DCE?????4??????,?B,C,E???????,??BD,?BD???(
)
A.
B.2
C.3
D.4
9.?????y=kx(k?0)????y?x??????,?????y=x+k??????(
)
10.(2013??????)??,??y=2x?y=ax+4???????A(m,3),????2x<ax+4????( ) A.x<C.x>
B.x<3 D.x>3
?????(???3?,?24?)
11.??:-= .
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+|a-b|=0,??ABC???
13.??a,b,c??ABC????,
??????? .
14.(2013????)???????,10?????????,??10???????? .
2
15.(2013????)?????y=(2-k)x+1?,y?x??????,?k?????? . 16.??,??????ABCD?,?E,F????BC,AD?,??????? ,????AECF??????(??????). 17.(2013????)??,??ABCD????8
,???AC?BD????O,AC?
BD=1?2,?AO?BO= ,??ABCD???S= .
18.(2013????)???????????240km???,????????y(L)?????x(km)?????????,???????,????? ????????? L. ?????(?66?)
19.(10?)??:(1)9
(2)(2
-1)(
+7-5+2.
+1)-(1-2).
2
20.(6?)(2013????)????:
,??a=-2.
21.(6?)(2013????)??y=2x+b???(3,5),???x????2x+b?0???.
3
22.(8?)(2013????)??,?E,F??????A?????,AE=AF,????E,F???,?AE???????,??????D,??DE,DF. (1)????????????,?????. (2)??EF,?AE=8cm,?A=60,???EF??.
23.(8?)(2013????)??,???ABCD?,AB=2,?DAB=60,?E?AD????,?M?AB???????(???A??),??ME?CD??????N,??MD,AN.
(1)??:???AMDN??????.
(2)?AM????,???AMDN?????????.
24.(8?)(2013????)??????????????????.???:????20?!???????:20??????,??????!???:???,????????!??????:???!????????!????????????A,B??,??????,????CDEF????,
AB=150m,CD=10m,?A=30,?B=45(A,C,D,B????????),?: (1)??????
(2)?????3m??,???????????????????.(????:1.41,
?2.24)
?1.73,
?
25.(10?)(2013????)????????????,??????y(??:cm)?????x(??:?)???,??????????(AC???,??CD??x?).
(1)????????,??????????
(2)???AC????,????????????? 26.(10?)?????????????????????,??????????,????????????10?,?????????,?????????:
??????????
4
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(1)???????(??????????????). (2)????????????,??????????????.
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1.?????D.?????2-x?0,??x?2.
2.?????B.???????????????,???A?????;????????,???????????,???B??;??????????????,???C?????;???????????????,???D?????. 3.?????C.
=2
,
=
=
=2
,
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????,
=
=
=15,??????C??.
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??
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5.?????A.?10??????????????2400,?????4?,?????2400;?
5
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C. (?2?1)
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- 1 -
9????????????????????A?B???????????????????????x??????? ?
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m?nmn2mnm?n
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12???????????????100??????????????????????
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A. 2000???3000?
B. 1900???28500?
C. 2000???30000? D. 1850???27750? ????????2???24??
1(m?1)(m?3)
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x?5m?3m?2
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- 2 -
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A
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?DE=1???BC??? ?
19??????ABCD??E?F????AD?BC????AC???BE?DF?G?H?
??????????ABE??CDF??AG=GH=HC??EG=BG;?S?ABE=S?AGE?????????__?
20??A????????????????????10??x?????8?????
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23????????????????????????????????84?????
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- 3 -
24????l???????????(????)??????????????????1?2?3????????????????S1?S2?S3?S4??S1?S2?S3?S4?_______? ???????52??
1a?3a2?2a?1
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2
26??5????????
27????????ABCD??E?CD?????F?BC???????CE=CF??FDC=30???BEF????
28????A???????????A?????320km?B??????40km???????60?BF???????????200km?????????????? ?A?????????????????
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x?216x?2
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?E
P
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- 4 -
a
29????????y=kx+b?????????y= ?????A?B????x??
x1
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30?(6?)????????????????????????????????????????????????????????????????10??????????????????
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31?(10?)E????ABCD????BD????EF?BC?EG?CD??????F?G.
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- 5 -
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2000
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= ?
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11?????????????????? 12?14 13?13/6 14?112.5
15?1,??
16???4,0???0,8??16 17? 6.3
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22
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PC
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?PE?DC?PF?BC
??PFC=?PEC=?BCD=90 ????PFCE??? ?PC=FE
ABCD?????BD?????AP=EF.
24?
25??1????AECF??????. ??ABCD??AD=BC?AD?BC? ??BE=DF??AF=CE? ????AECF?????? ?2?????AE=BE???B=?BAE
???BAC=90???B+?BCA=90??CAE+?BAE=90 ??BCA=?CAE
?AE=CE??????AECF??????? ????AECF???
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发表于 2019-9-13 23:46:11