找回密码
 立即注册
查看: 117|回复: 0

????????

[复制链接]

0

主题

0

回帖

56

积分

管理员

积分
56
发表于 2019-9-13 23:46:11 | 显示全部楼层 |阅读模式
???????????????????????

??? ???

??????

??????

1??????????????????????????????

???????

2??????a??????a??a?b????????a+b=0?

???????????????????????????????????????????

3????????????1???????????

4??????????????????????????????????0?????0?

????????????????????????????????. 5???????

???

?

6??????????????????????????? 7?????????????????????????????????????????????????????????????????

????????????????????????????????????????????????????

??????

??????

1? ?????????? ( )

????????????????????????????

????????????????????????????

A 1 B 2 C 3 D 4

2? a,b????????????????????????

C3

?a,-a,b,-b??????????? ( )

D?(-3)=-9

2

5.?a+b?0,ab?0,? ( )

A -b?-a?a?b B -a?-b?a?b C -b-a?a

3? ????????( )

?0?????????? ??

??????????????????

A ??B ?? C ??? D

4.???????? ( )

A 45

?a?-a?b D -b?b?

???????????????????????????

B?7?25=?95=?

A a?0,b?0B a?0,b?0 C a,b?????????????????????? D a,b??????????????????????

6????????????????????????250.1?kg,?250.2?kg, ?250.3?kg??????????????????????? ?

A 0.8kgB0.6kgC 0.5kgD 0.4kg

7.??1m????????????????????????

?????????????????? ?A (

)5

m B [1?(

)5

]mC (

)5

mD [1?(

)5

]m

8??ab?0,?

???????? ?

A0B 1 C 2 D-2 ??????

9?????

????????? ?

10????2a????

11??0?a?1,?a,a2

,???????

12???????????? 12 ?????????????????????????????10?1?14?00??????????

13???????????30km?????????8min,?????????????????????? m?min?

14???a?b=5a+2b-1,?(-4)?6????

15???=3?=2??ab?0,?a-b=?

16???a=25,b= -3,?a99

+b100

???????

??????

17?

18.8?232?(-23)2

19.

20.[-38-(-1)7+(-3)8

][-

53

]

21. 12 (-3)2

?(-)

2003

(-2)

2002



22. 16

?(0.5-)[-2-(-3)3

]??

?0.52

?

??????

23? ??1+2+3+?+31+32+33==1733??1-3+2-6+3-9+4-12+?+31-93+32-96+33-99???

24???1?2?3???50??+????????????????????????????????

25???????A???????????????????????????????????????????????????km?

?1? ?????A????

?2? ???????A????

?3? ??km??0.3??????????

26??????a,b???ab?2?+(1?b)2

=0???

+?+

???

?????

??????1-8?BCADDBCB

??????

9?-3? 10????? 11?? 12?2?00?13?3?

6

10? 14?-9?15?5?-5?16?6

??????

?????17?-9? 18?-45?19?? 20?

? 21?

?

1??????????????????????????????????????

22?

?????????????????????????????????????????

??????23?-21733?24?0?25??1?1?2???3?

?????????????????????????????????????????

????????????????????????????????

12?3?26?

2???????????????????????????????????????????????????????????????????????

3?????ax=b?????????????????????:

??? ??????

(1)a?0????????x=

??????

?

????????????????????????

????????????????????

?? _______ ?? ________ ?? _______ ?? _______

?????????3??? 30 ??

1???????1??2??????? ?

A

1

B

1

C1

D

1

2

A

2???AB?CD????? ?

A??1??2B??2??3 C??1??4 D??3??4 3???AB?CD?EF???O???1??2??3?? ? A?90 B?120C?180 D?140 4????????a ?b???c????????????? ??2??6 ??2??8 ??1??4?180 ??3??8?????? ?a?b???????? ?

A???B???C??? D???

5???????????????????????????? ?????????????? ? A??????30??????30 B??????50??????130 C??????50??????130 D???????50???????130 6????????????????? ?

D

B

13

2

2367

ba

??4??

D

B

D

C

7????????44????????????????? ????????ABCD?????? ?

ABA?3?4B?5?8 C?9?16 D?1?2

??7??

8???????????? ?

? ???????????? ????????? ??????? ?????? ?????????????

A??B???C????D???? 9?????????? ?

BAA????????????????

B?????????????????? EC???????????????????????

CD??????? (?10?)

D???????????????????????? 10???AB?CD??B?23??D?42???E?? ? A?23 B?42C?65D?19

??????????6??????3???18??

11???AB?CD????O???AOC?100?? ?AOD?___________?

12??AB?CD?AB?EF??CD_______EF????

E

HA

FB

G

?_______________________?

13?????????????AB??????______ ____________________?

14??????????????????????? ???????????????????????? ???????????????????????? ????????????????????

15????????????????? ?????_________________________?

16???????????????????????? ?????2?7??????????_______?

(?14?)

? ????5???15??

M

17????????AB?CD??1?75???2????

1

AB

CD N?17?

18??????AB ?CD???O?OD???AOF?OE?CD??O??1?50???COB ??BOF????

F

D

O

BA 1

(?18?)

E19????????ABCD??AB?10cm?BC?6cm2cm/SA?B????????

??????????????????????????24? HCDG

AB

(?18?)

?????6???18??

20??ABC?????????????????? ?1?????2?????? ?2?????3??????

A

B

C

21???????????????????????????????????1??2??3??4??????????????????????5?30????1???????????????????

22?????????ABCD?EF???ED?BC????G?D?C???M ?N???????EFG?55???1??2????

E DA

1

2

BC

N

????23?9???24?10???19??

23????E??DF????B?AC?????1??2??C??D???DF?AC?????????? ??1??2??2??3 ??1??4??

FDE

??3??4? ?

1

?________?_______ ? ?

3??C??ABD??

??C??D?? A??D??ABD? ?

?19?)

?DF?AC? ? 24????DO???AOC?OE???BOC??OA?OB? A?1???BOC?30??DOE?_______________ D ??BOC?60??DOE?_______________

BO?2????????????DOE?????AOB

E????????????

C

???????????????????? ?? ________ ?? _______

1???????????????? ?

A??????2? B??????? C????30 D???118???40 2???A?m?n?????????B?|m|?n????????? A????? B????? C????? D?????

3???P?x?????y????????????????3???P?????? A??3?3?B???3?3? C???3??3?D??3??3?

4??P?x?y???xy?0???P?? ? A?????????? B?????????? C?????????? D?????????? 5???1???1?????????2??????? ????? ? A?????3????? B?????1????? C?????3????? D?????1????? 6???3???????????????1??2?????? ???3??2???????????

?3

A??1??2?B???2?1? C???2?2? D??2??2? 7???M?x?y??????x?y?0???M??? ?

A????? B?????????????? C????? D?????????????? 8???ABC?????????????1?????????????????????? A??????x????????1??? B??????x????????1??? C??????y????????1??? D??????y????????1??? 9?????????A?2?0??B??3??4??C?0?0????ABC????? ? A?4 B?6 C?8 D?3

10??P?x?1?x?1?????? ? A????? B????? C????? D????? 11????A?x?????x?????3??y?????4????A????______________? 12????A??1?b?2????????b?________?

13????M?a?b?ab??????????N?a?b???________???

14????P?x?y????????|x|?3?|y|?5???P????______?

15????A??4?a??B??2?b???????????

????a?b?ab????________?

16?????ABCD?????????????????

???ABCD?x????????C?????????

??y????????D???????????B?

???________?

17???????ABCD????3????A????????????????? ?????ABCD????????

18???P?x?y????x?y??xy?0?????P??????????

D

C

A

(?17?)

B

19????????????????S?ABC?24?OA?OB?BC?12?

??ABC????????

(?19?)

20????????????????A?5?1??B?5?0??C?2?1??D?2?3??????????????????4?????????A??B??C??D?????

21????????????????????????A?3?3??B?3?5?????????C??????S?ABC?2?????C?????????????

6

B

5

4

3

2

1

24?????ABC???????? ?1?????ABC?????? ?2???S?ABC

?3????ABC????2?????????2?????A?B?C????????ABC????????A??B??C?????

???????????????????

??? ???

??????

??????

1??????????????????????????????????

???

2??????a??????a??a?b????????a+b=0??????

??????????????????????????????????????

3????????????1???????????

4??????????????????????????????????0?????0?

????????????????????????????????. 5

?

?

?

?

?

?

?

{

INCLUDEPICTURE

".cn/czsx/jszx/qnjsc/st/200705/W020070517491305474233.gif" * MERGEFORMATINET |

????

6???????????????????????????

7?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

??????

??????

1? ?????????? ( )

???????????????????????????? ????????????????????????????

A 1 B 2 C 3 D 4

2? a,b????????????????????????

?a,-a,b,-b??????????? ( )

A -b?-a?a?b B -a?-b?a?b C -b?a?-a?b D -b?b?-a?a

3? ????????( )

?0??????????????????????? ??????????????????????????????

A ??B ?? C ??? D ????

4.???????? ( ) A B?7?25=?95=?45 C3 D?(-3)=-9

2

5.?a+b?0,ab?0,? ( )

A a?0,b?0B a?0,b?0 C a,b?????????????????????? D a,b??????????????????????

6????????????????????????250.1?kg,?250.2?kg, ?250.3?kg??????????????????????? ? A 0.8kgB0.6kgC 0.5kgD 0.4kg

7.??1m?????????????????????????????????????????? ?

A ()m B [1?()]mC ()mD [1?()]m

8??ab?0,????????? ?

A0B 1 C 2 D-2 ??????

9?????????????? ?

10????2a????

11??0?a?1,?a,a,???????

12???????????? 12 ?????????????????????????????10?1?14?00??????????

2

5

5

5

5

13???????????30km?????????8min,?????????????????????? m?min?

14???a?b=5a+2b-1,?(-4)?6????

15???=3?=2??ab?0,?a-b=?

16???a=25,b= -3,?a+b???????

??????

17?

18.8?23?(-23)19.

20.[-3-(-1)+(-3)][-5]

21. 1 (-3)?(-)

22. 1?(0.5-)[-2-(-3)]???0.5?

??????

6

3

2

2

2

2003

8

7

8

3

2

299

100

(-2)

2002



23? ??1+2+3+?+31+32+33==1733??1-3+2-6+3-9+4-12+?+31-93+32-96+33-99???

24???1?2?3???50??+????????????????????????????????

25???????A???????????????????????????????????????????????????km?

?1? ?????A????

?2? ???????A????

?3? ??km??0.3??????????

26??????a,b???ab?2?+(1?b)=0???+?+???

?????

??????1-8?BCADDBCB

2


?????????????????
?????http://www.850500.com/news/3140.html
?????,??!
您需要登录后才可以回帖 登录 | 立即注册

本版积分规则

Archiver|手机版|小黑屋|Discuz! X

GMT+8, 2026-3-5 03:50 , Processed in 0.479095 second(s), 18 queries .

Powered by Discuz! X3.5

© 2001-2025 Discuz! Team.

快速回复 返回顶部 返回列表