小学五年级奥数练习题(2)及参考答案 下载本文

6、如图所示,把三角形ABC的B A边延长1倍到D点,AC边延长3倍到F点,C B边延长2倍到E点,连接DE、EF、F D,得到三角形DEF,它的面积是54平方厘米,三角形ABC的面积是多少?

7、如图所示,设BD、DE、E C的长分别是2、4、2,F是线段A E的中点,三角形ABC的边BC上的高为4,求三角形DEF的面积。

8、如图所示,三角形ABC的面积是1,A E= E D,BD=2 /3 BC,求阴影部分的面积。

9、如图,ABCD是平行四边形,三角形E AB是直角三角形,AB=80米,E B=70米,阴影部分比三角形EFH的面积大120平方米,则 H B长多少米? 10、如图,两个正方形地块,边长分别是80米和40米,那么阴影部分的面积是多少平方米?

11、如图,在三角形ABC中,CD=2 BD,CE=3 AE,阴影部分的面积是20平方米,那么三角形A B D与E CD的面积之和是多少?

12、如图,已知正方形甲的边长是50米,正方形乙的边长是40米,则图中阴影部分的面积是多少平方米?

( )1. Good morning! ! A.Morning ! B.Hello ! C.Hi !

( )2. Nice to see you again ! . A.How are you ? B.Nice to see you , too . C.How do you do ? ( )3.Good night,mom ! A.Night ! B.Good night ! C.Good evening .

( )4.How do you do ? A.How are you ? B.Fine,thanks . C.How do you do ? (

)5.How

many

story

books

do

you

have ?

A.I have 10. B.I can see 10. C.Thirty yuan.

( )6.Do you have new teachers? A.Yes,we do . B.Yes,we don’t. C.Yes,we have . (

)7.Who

s

your

art

teacher ? A.Mr Zhu. B.Miss Zhu. C.He’s tall. ( )8.What’s he like? A.He’s tall and strong . B.Yes,he is. C.Mr Zhu.

( )9.Is your English teacher young? A.No,she isn’t. B.Yes,she is . C.No,she is.

( )10. ? Her name is Chen Jie. A.What’s your name ? B.What’s she name ? C.What’s her name ?

( )11. ? I like Chinese,math and English. A.What classes do you like? B.What do you like? C.What are you like ?

( )12. ? We have English and P.E. A.What do you have on Mondays ? B.What do you have ? C.What do you have on Monday?

( )13. ? It’s Monday.

A.What is it today ? B.What day is it today ? C.What day is today ? ( )14. ? I watch TV and do my homework. A.What do you do ? B.What do you do in Mondays? C.What do you do on Sundays ?

( )15.May I have a look ? A.Sure.Here you are . B.Look ! C.Here you are .

( )16.Our math teacher is Canada. A.from B.in C.at

( )17.I three new teachers. A.has B.am C.have

( )18.What’s Chinese teacher like ? A.you B.your C.you’re

( )19.My P.E.teacher is thin. A.too B.so C.very

( )20.There are days in a week. A.six B.seven C.eight

( )21.There are month(月)in a year(年). A.ten B.eleven C.twelve

( )22.I often watch TV Saturday . A.on B.in C.at

( )23.I like P.E. I don’t lime music.

A.but B.and C.so (

)24.This

is

apple.

It

is red apple.

A.a , a B.an,an C.an, a ( )25.What do you like ? A.classes B.class C.class’s 六年级英语测试题

Class: Name:

( )1. How are you ? A.Fine,thanks. B.Yes,it is. C.How are you ? ( )2. Nice to meet you ! A.Fine,thank you. B.OK. C.Nice to meet you ,too !

( )3. How do you go to school ? A.I go to Canada by plane. B.I go to school by bike. C.What about you ? (

)4.

How

do

you

go

to

the

USA ?

A.I usually go to school by bus. B.I go to England by ship. C.I go by plane. ( )5. ? My home is near the post office.

A. Where is your home ? B.OK. C.See you then!

( )6. See you at 2 o’clock. A.See you then ! B.The fifth floor. C.It’s easy.

( )7. ? You can go by the No.15 bus.