Bµi 1: BÓ thø nhÊt chøa 2000 L níc. BÓ thø hai chøa 3 050 L níc. Cïng mét lóc ngêi ta rót níc tõ hai bÓ ra, trung b×nh mçi phót bÓ thø nhÊt rót 14,7 L níc, bÓ thø hai rót 25,2L . Hái sau bao l©u th× níc trong hai bÓ b»ng nhau?
Bµi 2: Mét cöa hµng cã 34,5kg b¸nh vµ 20,5kg kÑo. Sau khi b¸n sè b¸nh b»ng sè kÑo th× cßn l¹i sè b¸nh gÊp 5 lµn sè kÑo. Hái cöa hµng ®· b¸n mçi lo¹i bao nhiªu kg?
Bµi 3: T×m sè A biÕt 3 lÇn sè ®ã lín h¬n 41sè ®ã lµ 147,07.Bµi 4: Mua 0,5kg nho vµ 1kg t¸o ph¶I tr¶ 60 000®. Mua 1kg nho vµ 0,5 kg t¸o ph¶i tr¶ 72 000® . TÝnh gi¸ tiÒn 1kg nho? 1kg t¸o
AI LÀM ĐƯỢC MÌNH CHO 1 TICK
IV.Chän vµ khoanh trßn tõ cã phÇn g¹ch ch©n ®äc kh¸c trong c¸c nhãm tõ.
1.A. these B. thank C. those D. there
2. A. pencils B. rulers C. books D. boards
3. A. classroom B. school C. afternoon D. book
4. A. class B. father C. man D. family
5. A. goes B. nurses C. watches D. boxes
6. A. home B. come C. open D. cold
7. A. opens B. gets C. likes D. speaks
8. A. lunch B. watch C. teacher D. architect
9. A. city B. family C. fifteen D. telephone
10. A. number B. plum C. put D. but
V. Chän vµ khoanh trßn phÇn tr¶ lêi ®óng cho mçi c©u sau.
1.Tom and Peter are classmates and Mary is …………..friend
A. his B. her C. their D. our
2. What’s his brother’s name? …………..Nam.
A. His name B. He’s C. His brother name’s D. She
3. How many ……….are there in the living-room? There’s only one…………
A. couch/ couches B. couches/ couches C. couches/ couch D. couch/ couch
4. What ………..your parents …..after dinner?
A. do / do B. does / do C. do / does D. does / does
5. Are you and Lan students? Yes, ………
A. we are B. they are C. you are D. I am
6. My brother and ………….are at home.
A. Me B. my C. mine D. I
7. …………… are Hoa’s pens.
A. This B.That C.These D. There
8. ……………. is your baby sister? She’s fine.
A. How much B. How C. How old D. How many
9. He …………….to school on Sundays.
A. not goes B. don’t go C. doesn’t go D. no goes
10. Are these couches? No, ………… aren’t.
A. they B. there C. these D. it
IV.Chän vµ khoanh trßn tõ cã phÇn g¹ch ch©n ®äc kh¸c trong c¸c nhãm tõ.
1.A. these B. thank C. those D. there
2. A. pencils B. rulers C. books D. boards
3. A. classroom B. school C. afternoon D. book
4. A. class B. father C. man D. family
5. A. goes B. nurses C. watches D. boxes
6. A. home B. come C. open D. cold
7. A. opens B. gets C. likes D. speaks
8. A. lunch B. watch C. teacher D. architect
9. A. city B. family C. fifteen D. telephone
10. A. number B. plum C. put D. but
V. Chän vµ khoanh trßn phÇn tr¶ lêi ®óng cho mçi c©u sau.
1.Tom and Peter are classmates and Mary is …………..friend
A. his B. her C. their D. our
2. What’s his brother’s name? ……His name is……..Nam.
A. His name B. He’s C. His brother name’s D. She
3. How many ……….are there in the living-room? There’s only one…………
A. couch/ couches B. couches/ couches C. couches/ couch D. couch/ couch
4. What ………..your parents …..after dinner?
A. do / do B. does / do C. do / does D. does / does
5. Are you and Lan students? Yes, ………
A. we are B. they are C. you are D. I am
6. My brother and ………….are at home.
A. Me B. my C. mine D. I
7. …………… are Hoa’s pens.
A. This B.That C.These D. There
8. ……………. is your baby sister? She’s fine.
A. How much B. How C. How old D. How many
9. He …………….to school on Sundays.
A. not goes B. don’t go C. doesn’t go D. no goes
10. Are these couches? No, ………… aren’t.
A. they B. there C. these D. it
\(#TyHM\)
LuyÖn thi vµo líp 10 (1)Bµi 1 : Cho ®êng trßn (O) ®êng kÝnh AB. VÏ tiÕp tuyÕn xBx , gäi C, D lµ hai ®iÓm n»m’trªn ®êng trßn vµ ë hai nöa mÆt ph¼ng ®èi nhau bê lµ AB, Tia AC c¾t Bx t¹i M,tia AD c¾t Bx t¹i N.’a) Chøng minh: Δ ADC ~ Δ AMN.b) Chøng minh: tø gi¸c MNDC néi tiÕp.c) Chøng minh: TÝch AC.AM kh«ng ®æi khi C, D di ®éng trªn ®êng trßn.Bµi 2: Cho tam gi¸c c©n ABC ( AB = AC ), Mét cung trßn BC n»m bªn trong tam gi¸c vµtiÕp xóc víi AB, AC t¹i B vµ C sao cho A vµ t©m cña cung BC n»m kh¸c phÝa ®èi víi BC. Trªn cung BC lÊy mét ®iÓm M, kÎ MI, MH, MK lÇn lît vu«ng gãc víi BC, CA, AB. Gäi P lµ giao ®iÓm cña BM vµ IK, Q lµ giao ®iÓm cña CM vµ IH.a) Chøng minh c¸c tø gi¸c BIMK, CIMH néi tiÕp.b) Chøng minh MI2 = MH.MKc) Chøng minh tø gi¸c IPMQ néi tiÕp. Suy ra PQ vu«ng gãc víi MI.Bµi 3: Cho ®êng trßn (O) vµ d©y BC cè ®Þnh, mét ®iÓm A thay ®æi trªn cung lín BC saocho AC > BC, AC > AB; Gäi D lµ ®iÓm chÝnh gi÷a cña cung nhá BC. C¸c tiÕp tuyÕn cña(O) t¹i D vµ C c¾t nhau ë E. Gäi P,Q lÇn lît lµ giao ®iÓm cña AB víi CD; AD víi CE.a) Chøng minh DE // BC.b) Chøng minh tø gi¸c PACQ néi tiÕp.c) Tø gi¸c PBCQ lµ h×nh g×? t¹i sao
Hµ vµ Hång cïng lµm chung mét c«ng viÖc th× cã thÓ hoµn thµnh trong 10 ngµy. Sau 7 ngµy cïng lµm th× Hµ nghØ viÖc. Hång ph¶i lµm nèt phÇn viÖc cßn l¹i trong 9 ngµy. Hái nÕu lµm riªng th× mçi ngêi lµm trong bao l©u ?
Bµi 1. T×m 2 tõ ng÷ (mỗi loại) nãi vÒ: a. ThÓ hiÖn lßng nh©n hËu, t×nh c¶m yªu th-¬ng ®ång lo¹i……………………………………... b. ThÓ hiÖn tÝnh c¸ch hay viÖc lµm tr¸i víi lßng nh©n hËu, yªu th-¬ng………………………
c. ThÓ hiÖn tinh thÇn ®ïm bäc, gióp ®ì ®ång lo¹i……………………………………………
d. ThÓ hiÖn tÝnh c¸ch hay viÖc lµm tr¸i víi ®ïm bäc, gióp ®ì………………………………..
-_- bạn viết cái gì mà mik nhìn ra là mik chết luôn á
mình hông có hiểu
II. Dïng tõ gîi ý ë ®Çu c©u viÕt l¹i c¸c c©u sau sao cho nghÜa kh«ng thay ®æi.
1. How old are your parents? What…………………………………………………………………?
2. How many classroom are there in your family?How many…………………………….…………...?
3. What are these people?What are ………………………………………………...…...?
4. Mrs. Xuan has a son, Duc. Mrs Xuan…………………………………………………...
5. His family has four people.There are ……………………………………………………..
6. Mr. and Mrs. Minh has a daughter, Lan.Mr. and Mrs. Minh……………………………………
7. My mother goes to work at seven thirty.My mother goes to work………………………
8. Mai’s books are new.Mai …………………………………………………
9. The lamp is in front of the stereo.The stereo ……………………………………….
III. §äc ®o¹n v¨n sau rồi ®iÒn tõ thÝch hîp vµo chç trèng.
I have a little sister. (1)………….. name is Daisy. She (2)………………. to school six days a week. On (3)………………..days she has lunch (4)……………. school, but (5)………………… weekend she has lunch at home. She often has bread and a glass of milk (6)……………. breakfast. She likes milk very much. She drinks ( 7)………….. for every meal. After dinner, she often listens to music, then she (8)……………… her homework. Sometimes she watches television but she (9)……………like to watch it very much. She goes to (10)……….. at eleven o’clock.
1.How old are your parents?
What are your parents's age?
2.How many classroom are there in your family?
How many classrooms does your family have?
3.What are these people?
What are they ?
4.Mrs.Xuan has a son, Duc
Mrs Xuan's son is Duc
5.His family has four people
There are four people in his family
6.Mr. and Mrs.Minh has a daughter,Lan
Mr. and Mrs.Minh's daughter is Lan
7.My mother goes to work at seven thirty
My mother goes to work at half past seven
8.Mai's books are new
Mai has new books
9.The lamp is in front of the stereo
The stereo is behind the lamp
Cho tam gi¸c vu«ng ABC (gãc ®Ønh A b»ng 900) cã AC < AB, AH lµ ®êng cao kÎ tõ ®Ønh A. C¸c tiÕp tuyÕn t¹i A vµ B víi ®êng trßn t©m O ngo¹i tiÕp tam gi¸c ABC c¾t nhau t¹i M. §o¹n MO c¾t c¹nh AB ë E, MC c¾t ®êng cao AH t¹i F. KÐo dµi CA cho c¾t ®êng th¼ng BM ë D. §êng th¼ng BF c¾t ®êng th¼ng AM ë N.
1/ Chøng minh OM // CD vµ M lµ trung ®iÓm cña ®o¹n th¼ng BD.
2/ Chøng minh EF // BC.
3/ Chøng minh HA lµ tia ph©n gi¸c cña gãc MHN.
4/ Cho biÕt OM = BC = 4 cm. TÝnh diÖn tÝch tam gi¸c MEF.
Cho goc nhon xOy va M la môt điểm thuôc tia phân giac của goc xOy. Kẻ MA vuông goc vơi Ox ( A thuôc Ox), MB vuông goc vơi Oy ( B thuôc Oy)
a. Chưng minh: MA = MB. b. Tam giac OAB la tam giac gi? Vi sao?
c. đương thẳng BM căt Ox tai D, đương thẳng AM căt Oy tai E. Chưng minh: MD = ME.
d. Chưng minh OM=DE
