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21 tháng 4 2019

Dịch : Bước vào một cách mê tín

21 tháng 4 2019

:Bước vào một cách mê tín

Đề thi đánh giá năng lực

15 tháng 4 2019

anh yêu em 

15 tháng 4 2019

I. Nội qui tham gia "Giúp tôi giải toán"

1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;

2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.

3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.

Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.

5 tháng 4 2019

Không hỏi gút-gồ, tự nghĩ.

5 tháng 4 2019

Trả lời : 

Là chữ nhất .

#Love

3 tháng 4 2019

Nếu bình thường thì đây là bất phương trình

Nhưng 1 + 2 chỉ có thể lớn hơn hoặc bằng ( nhỏ hơn hoặc bằng) hay bằng thôi chứ 1 + 2 không thể lớn hơn 3

Đây là một bất phương trình sai

Em mới học lớp 8 thôi

31 tháng 3 2019

đáp án : 735836393801539188

25 tháng 3 2019

chịu !!!!!!!!!!!!!!!!!!!!!!!!!!!!

25 tháng 3 2019

1 số nào đó thuộc tập hợp N và chắc chắn số đó >0

Cô giáo em và em đang tranh cãi một vấn đề:Làm cách nào để chứng minh 3 điểm bất kì trong hệ Oxy tạo thành một tam giác?Cách 1 (cách của cô): Chứng minh tổng độ dài giữa 2 cạnh luôn lớn hơn cạnh còn lại.Cách 2 (cách của em): Chứng minh diện tích tạo thành giữa 3 điểm đó không bằng 0.Cô cứ khăng khăng bảo cách của em là thiếu, không hoàn chỉnh, rồi đưa ra bằng chứng là có thể có...
Đọc tiếp

Cô giáo em và em đang tranh cãi một vấn đề:

Làm cách nào để chứng minh 3 điểm bất kì trong hệ Oxy tạo thành một tam giác?

Cách 1 (cách của cô): Chứng minh tổng độ dài giữa 2 cạnh luôn lớn hơn cạnh còn lại.

Cách 2 (cách của em): Chứng minh diện tích tạo thành giữa 3 điểm đó không bằng 0.

Cô cứ khăng khăng bảo cách của em là thiếu, không hoàn chỉnh, rồi đưa ra bằng chứng là có thể có trường hợp tổng 2 cạnh bé hơn cạch còn lại (ví dụ như 5, 1, 1). Em biết trường hợp đó dùng cách của em là không thể xảy ra, nhưng không biết chứng minh thế nào. Nhờ mọi người phân biệt ai đúng ai sai, và nếu cách của em đúng thì ai đó chứng minh hộ em được không?

Em xin cảm ơn.

(Em biết là còn 1 cách nữa là dùng vector, nhưng xin mọi người chỉ xem xét 2 cách trên thôi nhé)

1
22 tháng 3 2019

cách cô giáo đùng

Exercise 1: Rewrite the following sentences that keep the same meaning.1. It isn’t necessary to finish the work to day.=> You don’t ………………………………………………..…………………………..2. Sally finally managed to get a job.=> Sally finally succeeded ……………………………..……………………………….3. That’s the last time I go to that restaurant.=> I...
Đọc tiếp

Exercise 1: Rewrite the following sentences that keep the same meaning.

1. It isn’t necessary to finish the work to day.

=> You don’t ………………………………………………..…………………………..

2. Sally finally managed to get a job.

=> Sally finally succeeded ……………………………..……………………………….

3. That’s the last time I go to that restaurant.

=> I certainly…………………………...................................…..………………………

4. “I advise you to take a holiday,” the doctor continued.

=> You’d ……………………………..………………………………..………………..

5. If you don’t rest yourself you really will be ill.

=> Unless ……………………………..………………………………..……………….

6. I should like someone to take me out to dinner.

=> What I should ……………………………..………………………………..………..

7. Martin may not be very well but he still manages to enjoy life.

=> Martin’s poor ……………………………..………………………………..………..

8. They’ll have to take the dog on holiday with them.

=> They can’t leave ……………………………..………………………………..…….

9. My aunt got heavily stressed because her marriage broke up.

=> The break-up of the marriage……………………………..…………………………

10. I can’t believe that he passed the exam.

=> I find……………………………..………………………………..…………………

Exercise 2: Rewrite the following sentences that keep the same meaning.

1. This is the fastest way to get to the city center.

=> There …………………………................…………...................................................

2. If anyone succeeds in solving the problems, it will probably be him.

=> He is the most …………................………….............................................…............

3. We arrived too late to see the first film.

=> We didn’t …………................………….............................................…...................

4. “Would you mind not smoking in here?”

=> I’d rather ……................………….............................................…............................

5. He wrote the letter in two hours.

=> It took ……................………….............................................….................................

6. “Why don’t we go out for a walk?”

=> My father suggested ……................………….............................................…...........

7. In spite of his age, Mr. Benson runs 8 miles before breakfast.

=> Though ……................………….............................................…...............................

8. I was very interested in our conversation.

=> It was interesting .……................………….............................................…...............

9. Why did you do that ?

=> Whatever ……................………….............................................…..........................?

10. These bookshelves are my own work.

=> I made ……................………….............................................…................................

Exercise 3: Rewrite the following sentences that keep the same meaning.

1. I don’t play tennis as well as you do.

=> You …………………………………………………….……………………………

2. I haven’t been to the dentist’s for two years.

=> It’s …………………………………………………….……………………………..

3. Whenever she went to Paris she bought a new dress.

=> She never …………………………………………………….……………………...

4. I spent seven years at secondary school and then I went to university.

=> After …………………………………………………….…………………………...

5. It’s not worth living to make her change her mind.

=> There’s …………………………………………………….………………………...

6. He said he was not guilty of stealing the car.

=> He denied …………………………………………………….……………………...

7. Is this the only way to reach the city centre?

=> Isn’t there …………………………………………………….…………………….?

8. He never suspected that the money had been stolen.

=> At no time …………………………………………………….……………………..

9. It’s my opinion that you should take more exersise.

=> If I…………………………………………………….……………………………...

10. I was going to leave, but because of what he said, I didn’t.

=> She persuaded …………………………………………………….…………………

Exercise 4: Rewrite the following sentences that keep the same meaning.

1. He was very sorry that he didn’t see Andrey on her trip to London.

=> He greatly regretted………………………………………………………….............

2. It’s thought that the accident was caused by human error.

=> The accident is…………………………………………..…………………...............

3. “Will you be visiting the Taj Mahal when you go to India?” he asked Elizabeth.

=> He asked …………………………………………………………………….............

4. “I think you should try the chicken Marengo,” said the waiter.

=> The waiter recommended ………………………………………………….. ............

5. This is the most delicious cake I have ever tasted.

=> I have …………………………………………………………………………...…...

Exercise 5: Rewrite the following sentences that keep the same meaning.

1. The questions are so easy that everyone can answer them.

=> They’re such ………………………………………………………………………...

2. The boy will receive some money to continue his study. His parents died in a traffic accident

=> The boy whose ………………………………....................................................……

3. They are producing motorbikes in Vietnam.

=> Motorbikes are ………………………………………………………………………

4. I wasn’t there yesterday, so I didn’t know who he was.

=> If I …………………………………………………………………………………...

5. If you do not try hard, you can’t pass the examination.

=> Unless ……………………………………………………………………………….

6. They spent more money, they had to work harder.

=> The more ……………………………………………………………………………

7. People thought that the cover was made of iron.

=> The cover ……………………………………………………………………………

8. He went to London. He had lived there when he was a boy.

=> He went to London where …………………………………………………………..

9. Jane was absent from class because of her sickness.

=> Because Jane was ……………………………………………………………………

10. The package was too heavy for Peter to carry.

=> He package was so …………………………………………………………………..

Exercise 6: Rewrite the following sentences that keep the same meaning.

1. You should take the train instead of the bus.

=> If …………………………………………………………………………..…………

2. I’m sure that someone forgot to lock the door.

=> Someone must ………………………………………………………..…...…………

3. They bought this house ten years ago.

=>They have …………………………………………………………………..………..

4. The course finished with a big party.

=> At the end ………………………………………………………………..…………..

5. We invited a pop star onto the chat show, but he didn’t turn up.

=> The pop star ………………………………………………………………..………..

6. Although she said that she would come, I don’t think she ever will.

=> Despite ……………………………………………………………....................……

7. The plane had hardly left the airport when the accident happened.

=> No sooner ………………………………………………………………..…………..

8. You feel tired now because you didn’t sleep very well last night.

=> Had ………………………………………………………………………….….……

9. When did you start the project?

=> How long ……………………………………………………………………………

10. Their wedding will be held in a lovely church.

=> The church …………………………………………………………...…..………….

Exercise 7: Rewrite the following sentences that keep the same meaning.

1. My father used to play football when he was young.

=> My father doesn’t ……………………………………………….............…...………

2. Jane gave me a present on my last birthday.

=> I was ……………………………………………………………................…………

3. “Let’s go swimming”

=> She suggests ……………………………………………………………................…

4. “Would you like a cup of coffee?”

=> He ……………………………………………………………………………............

5. We got lost in the jungle because we didn’t have a map.

=> If we had …………………………………………………………………….............

6. I last saw Bob when I was in Ho Chi Minh City.

=> I haven’t seen ………………………………………………………………..............

7. It is a three-hour drive from Hanoi to Nam Dinh.

=> It takes …………………………………………………………………….................

8. It’s a pity you didn’t tell us about this.

=> I wish …………………………………………………………………………..........

9. They think the owner of the house is abroad.

=> The owner ……………………………………………………………………...........

10. The children couldn’t go swimming because the sea was very rough.

=> The sea was too ………………………………………………………………….......

Exercise 8: Rewrite each of the sentences, beginning as shown, so that the meaning stays the same

1. When did you first know him?

=> How …………………………………………………………………………………

2. Their trip lasted three day.

=> They had …………………………………………………………………………….

3. It may rain hard this afternoon, so take the rain coat with you.

=> In case ……………………………………………………………………………….

4. She had to do the washing up but she didn’t.

=> She forgot……………………………………………………………………………

5. English id easy to learn.

=> It ………………………………………………………………….………………….

6. Don’t leave the lights on all night, you will waste electricity.

=> If ……………………………………………………………………………………..

7. The furniture was too old to keep.

=> It was ………………………………………………………………………………...

8. Gary is the best guitarist in her class.

=> No one else ………………………………………………………………………….

9. Since the invention of computer, people have saved a lot of time.

=> Since the computer was ……………………………………………………………..

10. It’s necessary for everybody to clean up their neighborhood once a week.

=> Everybody …………………………………………………………………………...

Exercise 9: Rewrite each of the sentences, beginning as shown, so that the meaning stays the same

1 It is necessary to finish the work today.

=>You need……………………………………………………………………….……..

2. Sally finally managed to get the job.

=> Sally finally succeeded………………………………………………………………

3. This is the last time I go to this restaurant.

=> I certainly……….……………………………………………………………………

4. “ I advise you to take a holiday,” the doctor continued.

=> You’d………..………………………………………………………………….…”

5. “ If you don’t rest yourself you really will be ill

=> Unless…………….…………………………………………………………….……

6. The doctor told him that he work too hard.

=> You…………………………………………………………………………….……

7. Those pictures are beautiful.

=> How……………………………………………………………………………….…

8. It was an interesting film.

=> What………………………………………………………………………………….

9. What is the weight of your suitcase?

=> How………………………………………………………………………………….

10. How tall is Peter’s father?

=> What………………………………………………………………………………….

Exercise 10: Finish the second sentence in such a way that it means exactly the same as the first one

1. He can’t afford to buy the car.

=> The car..................................... .....................................................………………......

2. Shirley didn’t begin to read until she was eight.

=> It wasn’t..................................... .................................................................................

3. Mrs. Taylor regretted buying the second –hand washing-machine.

=> Mrs. Taylor wished................... ..............................................................…..………..

4. Nobody can deny that she has a beautiful voice.

=> It....................................................... .....................................................………….....

5. Jane is the tallest girl in her class .

=> Nobody........................................................................................................................

6. They couldn’t find the manager anywhere .

=> The manager was.........................................................................................................

7. Their teacher is making them study hard .

=> They .....................................................................................................……………..

8. As I get older , I want to travel less.

=> The older....................................... ............................................................................

9. I have never been to Liverpool in my life .

=> Never..................................................... ..................................................................

10. My father speaks very little French .

=> My father speaks hardly............................... .........................................

9
21 tháng 3 2019

Exercise 1: Rewrite the following sentences that keep the same meaning.

1. It isn’t necessary to finish the work to day.

=> You don’t ……have to finish the work today.…………..

2. Sally finally managed to get a job.

=> Sally finally succeeded …in getting a job.…………….

3. That’s the last time I go to that restaurant.

=> I certainly………won’t go to that restaurant any more.……

4. “I advise you to take a holiday,” the doctor continued.

=> You’d ……better take a holiday.…..

5. If you don’t rest yourself you really will be ill.

=> Unless ………you rest yourself you really will be ill.………….

6. I should someone to take me out to dinner.

=> What I should …………like is being/ to be taken out to dinner.……..………..

7. Martin may not be very well but he still manages to enjoy life.

=> Martin’s poor ………..…health doesn’t / can’t prevent / stop him ( from ) enjoying life.……..

8. They’ll have to take the dog on holiday with them.

=> They can’t leave ……… their dog behind when they go/are on holiday.………..…….

9. My aunt got heavily stressed because her marriage broke up.

=> The break-up of the marriage…………made my aunt heavily stressed.…

10. I can’t believe that he passed the exam.

=> I find…………it hard to believe that he passed the exam.……………

21 tháng 3 2019

Exercise 2: Rewrite the following sentences that keep the same meaning.

1. This is the fastest way to get to the city center.

=> There …………is  no faster way than this to get to the city center........................

2. If anyone succeeds in solving the problems, it will probably be him.

=> He is the most ……ly person to succeed in solving the problems.........

3. We arrived too late to see the first film.

=> We didn’t …………arrive early enough to see the first film.............

4. “Would you mind not smoking in here?”

=> I’d rather …….you didn’t smoke in here.....

5. He wrote the letter in two hours.

=> It took ……......him 2 hours to write the letter..........

6. “Why don’t we go out for a walk?”

=> My father suggested …….we should go out for a while.…...........

7. In spite of his age, Mr. Benson runs 8 miles before breakfast.

=> Though ……..........Mr.Benson is old, He runs 8 miles before breakfast..

8. I was very interested in our conversation.

=> It was interesting .……....to talk to you........

9. Why did you do that ?

=> Whatever …….did you do that for ?.............?

10. These bookshelves are my own work.

=> I made ……these bookshelves myself.