Tìm tất cả các chữ số a và b để phân số \fr...
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20 tháng 6 2021

Đáp án:

The denominator is 45 so it is divisible by 5 and 9 divisible by 5 numbers ending in 0 or 5 divisible by 9 sum of digits divisible by 9 is divisible by 9 consider eg b = 0 we have 1a830 divisible by 9 => 1+a+ 8+3+0 is divisible by 9 => a = 6

Hok tốt

để ps 1a83b/ 45 thì 1a83b phai chia hết cho 5 và 9. Mà để chia hết cho 5 thì b phải bằng 5 hoặc 0

Nếu b= 0 thì 1a830 chia hết cho 9 ta có: (1+ a+ 8+ 3+ 0) chia hết cho 9= (12+ a) chia hết cho 9 => a= 6

Nếu b= 5 thì 1a835 chia hết cho 9 ta có: ( 1+ a+ 8+ 3+ 5) chia hết cho 9= (17+ a) chia hết cho 9 => a= 1

Với b= 0 thì a= 6

Với b= 5 thì a= 1

11 tháng 2 2022

D nha bn

11 tháng 2 2022

d nha bn oi

III. Circle the correct answer (A, B or C) to indicate the right answer to each of the following questions. (15pts)1. I’m afraid ..... the dark.A. ofB. forC. againstD. at2. Their team’s ..... are very strong this season. It will be hard for them to win.A. membersB. opponentsC. refereesD. coaches3. Many people use public ..... to get to work.A. transportB. vehiclesC. tripsD. traffic4. You have a ..... - you can either have strawberry or chocolate ice cream.A. chooseB. choiceC. chooserD....
Đọc tiếp

III. Circle the correct answer (A, B or C) to indicate the right answer to each of the following questions. (15pts)

1. I’m afraid ..... the dark.

A. of

B. for

C. against

D. at

2. Their team’s ..... are very strong this season. It will be hard for them to win.

A. members

B. opponents

C. referees

D. coaches

3. Many people use public ..... to get to work.

A. transport

B. vehicles

C. trips

D. traffic

4. You have a ..... - you can either have strawberry or chocolate ice cream.

A. choose

B. choice

C. chooser

D. chosen

5. Please make yourself ..... while I get some coffee.

A. comfortable

B. uncomfortable

C. comfort

D. comforted

6. We need a ..... of cheese for the sandwiches.

A. kilo

B. slice

C. bottle

D. litre

7. I’ll ..... tell him about the concert.

A. must

B. have to

C. should

D. can

8. This plant is ..... .

A. die

B. dying

C. dieing

D. died

9. They didn’t mind ..... by bus.

A. go

B. to go

C. going

D. went

10. ..... did you speak to Tom? - Yesterday.

A. When

B. Where

C. Why

D. How

11. My dad arrived ..... I was watching TV.

A. when

B. while

C. so

D. because

12. I ..... to the museum with you if you want.

A. go

B. will go

C. would go

D. went

13. Can Emma sing as ..... as Jane?

A. well

B. good

C. better

D. best

14. I won’t know the results of my test ..... next Monday.

A. at

B. during

C. until

D. on

1

III. Circle the correct answer (A, B or C) to indicate the right answer to each of the following questions. (15pts)

1. I’m afraid ..... the dark.

A. of

B. for

C. against

D. at

2. Their team’s ..... are very strong this season. It will be hard for them to win.

A. members

B. opponents

C. referees

D. coaches

3. Many people use public ..... to get to work.

A. transport

B. vehicles

C. trips

D. traffic

4. You have a ..... - you can either have strawberry or chocolate ice cream.

A. choose

B. choice

C. chooser

D. chosen

5. Please make yourself ..... while I get some coffee.

A. comfortable

B. uncomfortable

C. comfort

D. comforted

6. We need a ..... of cheese for the sandwiches.

A. kilo

B. slice

C. bottle

D. litre

7. I’ll ..... tell him about the concert.

A. must

B. have to

C. should

D. can

8. This plant is ..... .

A. die

B. dying

C. dieing

D. died

9. They didn’t mind ..... by bus.

A. go

B. to go

C. going

D. went

10. ..... did you speak to Tom? - Yesterday.

A. When

B. Where

C. Why

D. How

11. My dad arrived ..... I was watching TV.

A. when

B. while

C. so

D. because

12. I ..... to the museum with you if you want.

A. go

B. will go

C. would go

D. went

13. Can Emma sing as ..... as Jane?

A. well

B. good

C. better

D. best

14. I won’t know the results of my test ..... next Monday.

A. at

B. during

C. until

D. on

III. Circle the correct answer (A, B or C) to indicate the right answer to each of the following questions. (15pts)1. I’m afraid ..... the dark.A. ofB. forC. againstD. at2. Their team’s ..... are very strong this season. It will be hard for them to win.A. membersB. opponentsC. refereesD. coaches3. Many people use public ..... to get to work.A. transportB. vehiclesC. tripsD. traffic4. You have a ..... - you can either have strawberry or chocolate ice cream.A. chooseB. choiceC. chooserD....
Đọc tiếp

III. Circle the correct answer (A, B or C) to indicate the right answer to each of the following questions. (15pts)

1. I’m afraid ..... the dark.

A. of

B. for

C. against

D. at

2. Their team’s ..... are very strong this season. It will be hard for them to win.

A. members

B. opponents

C. referees

D. coaches

3. Many people use public ..... to get to work.

A. transport

B. vehicles

C. trips

D. traffic

4. You have a ..... - you can either have strawberry or chocolate ice cream.

A. choose

B. choice

C. chooser

D. chosen

5. Please make yourself ..... while I get some coffee.

A. comfortable

B. uncomfortable

C. comfort

D. comforted

6. We need a ..... of cheese for the sandwiches.

A. kilo

B. slice

C. bottle

D. litre

7. I’ll ..... tell him about the concert.

A. must

B. have to

C. should

D. can

8. This plant is ..... .

A. die

B. dying

C. dieing

D. died

9. They didn’t mind ..... by bus.

A. go

B. to go

C. going

D. went

10. ..... did you speak to Tom? - Yesterday.

A. When

B. Where

C. Why

D. How

11. My dad arrived ..... I was watching TV.

A. when

B. while

C. so

D. because

12. I ..... to the museum with you if you want.

A. go

B. will go

C. would go

D. went

13. Can Emma sing as ..... as Jane?

A. well

B. good

C. better

D. best

14. I won’t know the results of my test ..... next Monday.

A. at

B. during

C. until

D. on

B. READING. (10pts)

I. Fill in the missing words. Write ONE word only. (5pts)

Portsmouth (0)...is...a town in England. It is in the south (1) ............................. England and it is on the coast. Off the coast, near Portsmouth, there is an island (2) ............................. the Isle of Wight. The island is in the south of Portsmouth. It is famous (3) ............................. water sports. The Isle of Wight is beautiful and it (4) ............................. warm climate. Every year, thousands of people come here (5) ............................. sightseeing and sailing.

 

2

III. Circle the correct answer (A, B or C) to indicate the right answer to each of the following questions. (15pts)

1. I’m afraid ..... the dark.

A. of

B. for

C. against

D. at

2. Their team’s ..... are very strong this season. It will be hard for them to win.

A. members

B. opponents

C. referees

D. coaches

3. Many people use public ..... to get to work.

A. transport

B. vehicles

C. trips

D. traffic

4. You have a ..... - you can either have strawberry or chocolate ice cream.

A. choose

B. choice

C. chooser

D. chosen

5. Please make yourself ..... while I get some coffee.

A. comfortable

B. uncomfortable

C. comfort

D. comforted

6. We need a ..... of cheese for the sandwiches.

A. kilo

B. slice

C. bottle

D. litre

7. I’ll ..... tell him about the concert.

A. must

B. have to

C. should

D. can

8. This plant is ..... .

A. die

B. dying

C. dieing

D. died

9. They didn’t mind ..... by bus.

A. go

B. to go

C. going

D. went

10. ..... did you speak to Tom? - Yesterday.

A. When

B. Where

C. Why

D. How

11. My dad arrived ..... I was watching TV.

A. when

B. while

C. so

D. because

12. I ..... to the museum with you if you want.

A. go

B. will go

C. would go

D. went

13. Can Emma sing as ..... as Jane?

A. well

B. good

C. better

D. best

14. I won’t know the results of my test ..... next Monday.

A. at

B. during

C. until

D. on

B. READING. (10pts)

I. Fill in the missing words. Write ONE word only. (5pts)

Portsmouth (0)...is...a town in England. It is in the south (1) .............of................ England and it is on the coast. Off the coast, near Portsmouth, there is an island (2) ..............called............... the Isle of Wight. The island is in the south of Portsmouth. It is famous (3) ...............for.............. water sports. The Isle of Wight is beautiful and it (4) ..............has a............... warm climate. Every year, thousands of people come here (5) ..............for............... sightseeing and sailing.

cơ hội kiếm điểm lầnc210. I have a pen pal in Singapore. We ______ to each other at least once a month.A. CompriseB. dividedC. consist ofD. write11. She advised me ______after dark.A. not go outB. don’t go outC. didn’t go outD. not to go out12. He spends a lot of time ______ the web every day.A. respondingB. lookingC. walkingD. surfing13. Students have to go to school _____time.A. atB. onC. intoD. by14. When his parents died, his grandmother ______him.A. looked afterB. turned onC....
Đọc tiếp

cơ hội kiếm điểm lầnc2

10. I have a pen pal in Singapore. We ______ to each other at least once a month.

A. Comprise

B. divided

C. consist of

D. write

11. She advised me ______after dark.

A. not go out

B. don’t go out

C. didn’t go out

D. not to go out

12. He spends a lot of time ______ the web every day.

A. responding

B. looking

C. walking

D. surfing

13. Students have to go to school _____time.

A. at

B. on

C. into

D. by

14. When his parents died, his grandmother ______him.

A. looked after

B. turned on

C. looked into

D. took care

15. Would you mind if I took a photo? – “______.”

A. Please go ahead

B. Thank you

C. Yes, I would

D. Congratulations

II. Put the correct form of the verb in brackets

1. I sometimes (get) __________________________ up late in the morning.

2. Jennifer and her sister (study) _____________ in their room at the moment.

3. David (not/ hand) __________________________ in his assignment yet.

4. It started raining when we (play) __________________________ in the garden.

5. What ___________ you (do) ____________ next weekend? - I am leaving for Hanoi.

3

10. I have a pen pal in Singapore. We ......................... to each other at least once a month.

A.comprise B. divide C. consist of D. write

11. She advised me ..................... after dark.

A. not go out B. don't go out C.didn't go out D. not to go out

12. He spends a lot of time ................ the web every day.

A. responding B. looking C. walking D. surfing

13. Students have to go to school ................. time

A. at B. on C. into D. by

14. When his parents died , his grandmother ............... him

A. looked after B. turned on C. looked into D. took care

15.Would you mind if I took a photo ? - "..............."

A. please go ahead B. Thank You C. yes , I would D. Congratulations

II. Chia dạng đúng của động từ trong ngoặc để hoàn chỉnh câu. (1.0 điểm)

1. I sometimes (get) ___get_____ up late in the morning.

2. Jennifer and her sister (study) __are studying______ in their room at the moment.

3. David (not/ hand) _____hasn't handed____ in his assignment yet.

4. It started raining when we (play) _____played___ in the garden.

5. What __will___ you (do) ____do___ next weekend? - I am leaving for Hano

Part 2: Circle the letter A, B, C or D to complete each of the following sentences.1. Dave ________ a student with her work now.A. helped B. help C. is helping D. helping2. “What ________?” “I don’t know. Look it up.”A. does this word mean B. means this wordC. does mean this word D. is meaning this word3. I usually go home ________ the weekend.A. in B. when C. at D. of4. Don’t worry about the baby. I’ll look ________ her while you’re out.A. for B. with C. to D. after5. I’ll be...
Đọc tiếp

Part 2: Circle the letter A, B, C or D to complete each of the following sentences.

1. Dave ________ a student with her work now.

A. helped B. help C. is helping D. helping

2. “What ________?” “I don’t know. Look it up.”

A. does this word mean B. means this word

C. does mean this word D. is meaning this word

3. I usually go home ________ the weekend.

A. in B. when C. at D. of

4. Don’t worry about the baby. I’ll look ________ her while you’re out.

A. for B. with C. to D. after

5. I’ll be ready in ________ minutes.

A. a lot B. a little C. much D. a few

6. I’m looking forward ________ you again soon.

A. to see B. seeing C. to seeing D. see

7. The telephone ________ by Bell in 1876.

A. has invented B. is invented C. was invented D. invented

8. Wait here ________ I get back.

A. until B. before C. as soon as D. when

9. I’d like ________ glass of milk, please.

A. the B. a C. an D. x

10.Oxford is one of ________ oldest universities in Europe.

A. the B. x C. much D. more

cơ hội kiếm điểm alo alo

5
22 tháng 6 2021

Part 2: Circle the letter A, B, C or D to complete each of the following sentences.

1. Dave ________ a student with her work now.

A. helped B. help C. is helping D. helping

2. “What ________?” “I don’t know. Look it up.”

A. does this word mean  B. means this word

C. does mean this word  D. is meaning this word

3. I usually go home ________ the weekend.

A. in B. when C. at D. of

4. Don’t worry about the baby. I’ll look ________ her while you’re out.

A. for B. with C. to D. after

5. I’ll be ready in ________ minutes.

A. a lot B. a little C. much D. a few

6. I’m looking forward ________ you again soon.

A. to see B. seeing C. to seeing D. see

7. The telephone ________ by Bell in 1876.

A. has invented B. is invented C. was invented D. invented

8. Wait here ________ I get back.

A. until B. before C. as soon as D. when

9. I’d ________ glass of milk, please.

A. the B. a C. an D. x

10.Oxford is one of ________ oldest universities in Europe.

A. the B. x C. much D. more

22 tháng 6 2021

Trả lời;

1.C

2.A

3.C

4.D

5.D

6.C

7.C

8.A

9.B

10.A

22 tháng 6 2021

Part 1: Finish the second sentence so that it has a similar meaning to the first one, beginning with the given words.

1. Travelling by coach is cheaper than travelling by train.

It is more _expenisve to travel by train than______by coach.

2. Seats must be booked on the coach.

You must _book seats on the coach____________________.

3. I prefer driving to travelling by coach.

I driving _better than travelling by coach.

4. I find long car journeys boring.

I get __bored of long____ car journeys.

5. Being tired makes driving dangerous.

Tiredness makes it __dangerous to drive.______________.

6. It's too cold to go to the beach.

It isn't __hot enough to go____________ to the beach.

  1. There aren’t any pillows _________the bed.       A. fromB. onC. atD. to  2. We can’t see all of the film because it is ___________ .        A. boring B. interestingC. excitingD. easy  3. What about _________to Hue on Sunday ?        A. to goB. goingC. go D. goes          4. I am going to the _________now. I want to see the animals.   A. bakeryB. schoolC. zooD. river  5. What does your father do? -   _________     A. He’s a worker.B. He’s...
Đọc tiếp

  1. There aren’t any pillows _________the bed.

       A. from

B. on

C. at

D. to

  2. We can’t see all of the film because it is ___________ .

       A. boring

B. interesting

C. exciting

D. easy

  3. What about _________to Hue on Sunday ?

       A. to go

B. going

C. go

D. goes       

  4. I am going to the _________now. I want to see the animals.

   A. bakery

B. school

C. zoo

D. river

  5. What does your father do? -   _________

     A. He’s a worker.

B. He’s sleeping.

C. He’s fine.

D. He’s good.

  6. Tony: Let’s go swimming after school.     Tim: _________

     A. Yes, please.

B. No, thanks.

C. You are welcome.

D. Great idea!

  7. She usually _________to the radio in the morning.

     A. listen 

B. listens

C. listened

D. listening

  8. How do you go to your hometown? - _________taxi.

      A. In

B. On

C. By

D. Of

  9. Ho Chi Minh City is ___________city in Viet Nam.

      A. the bigger  

B.  biggest          

C. the bigest

D. the biggest

  10. Is there ___________milk for lunch? – Yes, there is .

      A. an

B. some

C. any

D. a

3
31 tháng 7 2021

  1. There aren’t any pillows _________the bed.

       A. from

B. on

C. at

D. to

  2. We can’t see all of the film because it is ___________ .

       A. boring

B. interesting

C. exciting

D. easy

  3. What about _________to Hue on Sunday ?

       A. to go

B. going

C. go

D. goes       

  4. I am going to the _________now. I want to see the animals.

   A. bakery

B. school

C. zoo

D. river

  5. What does your father do? -   _________

     A. He’s a worker.

B. He’s sleeping.

C. He’s fine.

D. He’s good.

  6. Tony: Let’s go swimming after school.     Tim: _________

     A. Yes, please.

B. No, thanks.

C. You are welcome.

D. Great idea!

  7. She usually _________to the radio in the morning.

     A. listen 

B. listens

C. listened

D. listening

  8. How do you go to your hometown? - _________taxi.

      A. In

B. On

C. By

D. Of

  9. Ho Chi Minh City is ___________city in Viet Nam.

      A. the bigger  

B.  biggest          

C. the bigest

D. the biggest

  10. Is there ___________milk for lunch? – Yes, there is .

      A. an

B. some

C. any

D. a

31 tháng 7 2021

1.B

  2. We can’t see all of the film because it is ___________ .

     A.Boring

B. interesting

C. exciting

D. easy

  3. What about _________to Hue on Sunday ?

       A. to go                                       B.going

 

C. go 

D. goes       

  4. I am going to the _________now. I want to see the animals.

   A. bakery

B. school             C.Zoo

 

D. river

  5. What does your father do? -   _________

     A.He is a worker

B. He’s sleeping.

C. He’s fine.

D. He’s good.

  6. Tony: Let’s go swimming after school.     Tim: _________

    A. Yes,please.

B. No, thanks.

C. You are welcome.

D. Great idea!

  7. She usually _________to the radio in the morning.

     A. listen                       B.Listens

 

C. listened

D. listening

  8. How do you go to your hometown? - _________taxi.

      A. In

B. On            C.By

D. Of

  9. Ho Chi Minh City is ___________city in Viet Nam.

      A. the bigger  

B.  biggest          

C. the bigest           D.The biggest

 

  10. Is there ___________milk for lunch? – Yes, there is .

      A. an

B. some           C.any  

 

D. a

1. _________ your family _________ the trip yesterday? - Yes, we didA. Does/ enjoy B. Did/ enjoyed C. Do/ enjoyD. Did/ enjoy2. What do you ____________ Ha Long Bay?A. think ofB. thinks ofC. thinking ofD. to think of3. ____________ eggs does Mary eat every week? - She eats four a weekA. How muchB. How manyC. How longD. How farIV/ Read and completesmallerbeautifulofvisitedthanDear Linda,I’m back Da Lat, a city in the centre (1) __________ Vietnam. Let me tell you about the wonderful time I had...
Đọc tiếp

1. _________ your family _________ the trip yesterday? - Yes, we did

A. Does/ enjoy

B. Did/ enjoyed

C. Do/ enjoy

D. Did/ enjoy

2. What do you ____________ Ha Long Bay?

A. think of

B. thinks of

C. thinking of

D. to think of

3. ____________ eggs does Mary eat every week? - She eats four a week

A. How much

B. How many

C. How long

D. How far

IV/ Read and complete

smaller

beautiful

of

visited

than

Dear Linda,

I’m back Da Lat, a city in the centre (1) __________ Vietnam. Let me tell you about the wonderful time I had there with my dad and my mum last week.

Da Lat is a beautiful city. It’s (2) __________ than Hanoi. It’s more peaceful, too. We (3) __________ some interesting places such as Langbiang Peak, Prenn Waterfall, Valley of Love and Truc Lam Monastery. The weather was fine. In Da Lat, it was cooler and drier (4) __________ in Hanoi. The food was delicious and cheap. But the clothes were more expensive.

We stayed there for five days before (5) __________ than I expected.

Bye,

Nam

V/ Make questions to the underlined parts

1. The restaurant is next to the park .

__________________________________

2. I’d like a glass of orange juice, please.

__________________________________

3. They will get to Nha Trang by plane.

__________________________________

VI/ Reorder these words to have correct sentences

1. cheaper/ life/ Life/ Hanoi./ in/ Da Nang/ is/ in/ than/

__________________________________

2. bottles of water/ three/ Linda/ every day./ drinks/

__________________________________

VII/ Read the passage below and write True (T) or False (F)

It is a custom in Britain and in most European countries to celebrate a person’s birthday. Members of the family and close friends are supposed to be present at the party. If they can’t come, they may send a gift by post. At the birthday party, the person who gives birthday party opens all the gifts in front of all the people present and thank them for the gifts.

The mother usually makes a birthday cake, or if she can’t, she may order one from a cake-shop. A number of candles are placed on the top of the cake and they will be lit when the party starts. The number of the candles is also the age of that person. After the light is out, the sing of the song “Happy birthday to you!” then play some games or sing or dance together.

Statements

True or False

1.        Celebrating a person’s birthday is a custom in many countries

 

2.        If the guests can’t come, they may send a gift by post

 

3.        The person who gives birthday party shouldn’t open the gifts in front of all the people at the party

 

4.        The number of the candles on the cake means the number of the family members

 

4
23 tháng 8 2021

V/ Make questions to the underlined parts

1. The restaurant is next to the park .

____Where is the restaurant ?_______________

2. I’d li ke a glass of orange juice, please.

___What would you li.ke ?___________________

3. They will get to Nha Trang by plane.

___How will they get to Nha Trang___________

VI/ Reorder these words to have correct sentences

1. cheaper/ life/ Life/ Hanoi./ in/ Da Nang/ is/ in/ than/

_____Life in Da Nang is cheaper than life in Hanoi . _______

2. bottles of water/ three/ Linda/ every day./ drinks/

_____Linda drinks three bottles of water everyday________

23 tháng 8 2021

1. _________ your family _________ the trip yesterday? - Yes, we did

A. Does/ enjoy

B. Did/ enjoyed

C. Do/ enjoy

D. Did/ enjoy

2. What do you ____________ Ha Long Bay?

A. think of

B. thinks of

C. thinking of

D. to think of

3. ____________ eggs does Mary eat every week? - She eats four a week

A. How much

B. How many

C. How long

D. How far

IV/ Read and complete

smaller    

beautiful    

of      

visited      

than    

Dear Linda,

I’m back Da Lat, a city in the centre (1) ___of_______ Vietnam. Let me tell you about the wonderful time I had there with my dad and my mum last week.

Da Lat is a beautiful city. It’s (2) _____smaller_____ than Hanoi. It’s more peaceful, too. We (3) _____visited_____ some interesting places such as Langbiang Peak, Prenn Waterfall, Valley of Love and Truc Lam Monastery. The weather was fine. In Da Lat, it was cooler and drier (4) _____than_____ in Hanoi. The food was delicious and cheap. But the clothes were more expensive.

We stayed there for five days before (5) _____beautiful_____ than I expected.

Bye,

Nam

20 tháng 6 2021

2. Alexander G.Bell was inventing the telephone

3. I'll make you a phone call tormorrow evening

4.  Let’s go to the movie theater tonight

5. I used to live on a farm

20 tháng 6 2021

2) Alexander G.Bell was the inventor of the telephone

3. I'll make a phone call tomorrow evening

4) Let's go to the movie tonight !