*Cộng các phân thức sau:a) x^2/x+1 + 2x/x^2-1 + 1/1+x+1 b) 2x+y/2x^2-y + 8y/y^2-4x^2+2x-y/2x^2+xy

*Cộng các phân thức sau: a) x^2/x+1 + 2x/x^2-1 + 1/1+x+1  b) 2x+y/2x^2-y + 8y/y^2-4x^2+2x-y/2x^2+xy c) 1/x-y +3xy/y^3-x^3 + x-y/x^2+xy+y^2

I. PHONETIC  1. Choose the world A, B, C or D whose s̲t̲r̲e̲s̲s̲ ̲p̲a̲t̲t̲r̲e̲n̲ is different from the others. A. minority   B. ethnic  C. tradition   D. religion 2. Choose the world A, B, C or D whose u̲n̲d̲e̲r̲l̲i̲n̲e̲d̲ ̲p̲a̲r̲t̲ is pronounced differently from the others. A. live̲d̲    B. populate̲d̲ C. harveste̲d̲  D. loade̲d̲ II. Choose the best answer among A, B, C or D to complete the sentences. 1. Chọn từ có phần gạch dưới cần được sửa lỗi. Vietnam i̲s̲ a̲n̲ m̲u̲l̲t̲i̲c̲u̲l̲t̲u̲r̲a̲l̲ country with 5̲4̲ ethnic groups. A. is            B. an C.multicultural   D. 54 2. The whole family ________with tradition by spending the New Year's Eve abroad. A. went   B. broke  C. followed   D. kept 3. In Viet Nam, you________ use only the first name to address people older than you. A. should   B. must C. have to  D. shouldn't 4. Lang Lieu couldn't buy any special food________ he was very poor. A. although    B. when C. while      D. because III. Give the correct tense/ form of the words in brackets. 1. They detest (get)________ up early in the morning. 2. The Tay people live mostly in the________ regions in the north of Viet Nam(MOUNTAIN) IV. READING: A. Read the passage and complete it with the words given: traditions, means, according, however, therefore.   The tradition of birthday parties started a long time ago. People thought there was a special danger from evil spirits on birthdays;(1)________, friends and family came together to bring good thoughts and wishes and even presents. There are some different(2)________ in different countries around the word.  In Viet Nam, on a child's first birthday, family members put many things on the floor around the child for him or her to choose. (3)________ to tradition, the first thing the child picks up will tell us his or her future job. In some countries, a 21 st birthday cake is sometimes in a shape of a key. The key (4)________ that the young person is now old enough to leave and build up to their own family at any time they want to. There is usually a special party on these birthdays. B. Read the passage carefully then answer the questions below:   Once upon a time three was a young girl called Cinderella. Cinderella was living happily with her family when her mother died. Her father married an evil widow with two daughters. Cinderella's stepmother and two stepsisters mistreated her. She had to wear old clothes and work hard while the sisters wore fancy clothes and had fun. A good fairy helped Cinderella. Shu turned Cinderella's old dress into a beautiful gown. Cinderella went to a party and a handsome prince politely invited her to dance with him. He fell in love with her wanted to find out who she was. Cinderella left the party in a hurry and didn't tell the prince her name. But she left a glass slipper, and the prince used that to find her. They got married and lived happily ever after. * Questions: 1. What did Cinderella's father do when his wife died? ....................................... 2. How did Cinderella's stepmother and two stepsisters treat her? ....................................... 3. Who turned Cinderella's old clothes into a beautiful gown? ....................................... 4. What did the prince use to find Cinderella? ....................................... PART V. WRITING:  Question 1: Rearrange the given words to complete the sentence. 1. festival / in / Viet Nam / Tet / is / the / most / important / ....................................... 2. because / they / can / Children / like / Tet / receive / lucky / money / ....................................... Question 1: Rewrite or combine the sentences, using the suggested words.  1. Mr Lamwas very busy; however, he spent the whole day at the La Mat Village festival. => Although....................................... 2. I love listening to music. => I fancy....................................... 3. You are advised not to wear shorts when going to pagodas. => You should not....................................... 4. My house is smaller than your house. => Your house.......................................

Viết một lá thư cho một người bạn, người thân của mình để chia sẻ về sự hiểu biết những việc đã làm của mình đồng thời nhắn nhủ một thông điệp mong muốn của bạn với họ để cùng nhau phòng chống dịch bệnh Covid 19 hiệu quả nhất

Tìm đa thức A trong phân thức sau:
x^2+4x+4/x^2-4=x^2+3x+2/A

Câu 1: Viết phương trình chữ cho quá trình sau:
Cho kẽm tác dụng với axit sunfuric thu được kẽm sunfat và khí hiđro
Câu 2: Hợp chất gồm 2 nguyên tử nguyên tố Y liên kết với 1 nguyên tử nguyên tố oxi và có phân tử khối bằng 62. Vậy Y là nguyên tố nào?

I. Choose the world which has the underlined part is pronounced differently from the others.
1. A. buttons̲ B. kites̲
C. tricks̲ D. bikes̲
2. A. li̲berty B. vi̲sitor
C. symboli̲ze
D.di̲sease
3. A. like̲d̲ B. cooke̲d̲
C. looke̲d̲ D. visite̲d̲
4. A. c̲anyon B.anc̲ient
C. c̲apital D. c̲ook
II - Choose the best answer among A, B, C or D to complete the sentences.
1. Hai helped his parents ______ the rice onto the buffalo-drawn cart.
A. collect B. load
C. dry D. ride
2. In Emi's opinion, city life is more ______ than country life.
A. friendly B. natural
C. peaceful D.exiciting
3. He seems to be ______ than we thought.
A. more quick B. more quickly C. quicker
D. quicklier
4. Look! Some children are ______ the buffaloes.
A. picking B. singing
C. driving D. herding
5. Many ethnic groups have their own languages, and some even have ______ languages.
A. spoken B. listened
C. read D. written
6. Minh enjoys ______ to music, especially pop music in her free time.
A. listening B. playing
C. speaking D. hearing
7. The ______ have a very hard life. They cannot live permanently in one place.
A. farmers B. nomads
C. workers D. villagers
8. Five-coloured ______ is a traditional dish of many ethnic minorities in mountainous regions.
A. food B. costume
C. sticky rice D. egg
III- Give the correct form or tense of the verbs in the brackets.
1. Look at the kangaroo! It (hop) ................. on its hind legs.
2. Earth (hold) ................. by the gravity of the sun and orbits around it.
3. People (play) ................. chess for around two thousand years.
4. I would like (visit) ................. Ho Chi Minh mausoleum.
IV. Fill in each numbered blank with one suitable word from the box to complete the passage.: "worship, celebrate, However, preparation, Traditional"
Tet is the biggest festival in Viet Nam. It takes place in the first lunar month of the year; it's a time for family reunion. To (1) ________ Tet, Vietnamese people make many tasty traditional foods. The most important food includes Chung cakes, sausages, boiled chicken, spring rolls, and sticky rice. Chung cake is made of sticky rice, pork, green beans and other spices, wrapped in the green leaves; therefore, this cake humid during Tet. Other significant food that can't be missed to (3) ________ the ancestors are sausages, spring rolls and sticky rice. Beacause sausages are difficult to make, people often buy them from famous suppliers. (4) ________, sticky rice and spring rolls are easier to prepare and must be served immediately after they are cooked, so they are often made at home.
V. Read the passage and do the tasks below.
I like in a mountain village. My parents often tell me stories about their life in the past. It's not much like the village I can see nowadays.
Some villagers now live in brick houses instead of earthen ones. Our houses are better equipped with electric fans and TVs. Thanks to the TV, we now know more about life outside our village. We don't use oil lamps any more. We have electric lights which are much brighter.
More villagers are using motorcycles for transport instead of riding a horse or walking. We - village children - no longer have to walk a long way and cross a stream to get to school, which is dangerous in the rainy season. Now there's a new school nearby. We also have more visitors from the city. They come to experience our way of life.
* Decide whether the following statements are True (T) or False (F).
1. ________ Brick houses aren't better equipped than earthen ones.
2. ________ More villagers are using motorcycles for transport.
** Choose the best answer A, B, C or D.
3. Thanks to the ________, they know more about life outside yhe village.
A. television B. radio
C. computer D. book
4. Who comes to experience villagers' life?
A. their parents B. farmers C. visitors
D. students
VI- Rewrite the following sentences.
1. He doesn't play football as skillfully as his brother.
-> His brother ______________________
2. Linda hates reading poetry.
-> Linda dislikes ______________________
3. We have learnt Englidh for 4 years.
-> We started ______________________
4. She is cleaning the floor now.
-> The floor ______________________

Đề bài: Tưởng tượng em là người được chứng kiến toàn bộ cảnh lão Hạc trò chuyện với ÔNG GIÁO SAU KHI BÁN CHÓ VÀ CÁI CHẾT CỦA LÃO HẠC. Dựa vào truyện ngắn "Lão Hạc" của Nam Cao em hãy kể lại những sự việc đó.

Câu 1: Đọc đoạn trích sau và trả lời câu hỏi:
Các bác sĩ đang tập trung phân loại mẫu xét nghiệm của hơn 1000 bạn ở trung tâm cách ly. Các bác sĩ làm việc với áp lực rất lớn nhưng chưa một lần khó chịu hay to tiếng với mọi người. Lúc nào cũng luôn mỉm cười, động viên và sẵn sàng giải thích cho rất nhiều câu hỏi, phân vân khác nhau.
Khi phát hiện những ca dương tính, các anh chị không chỉ cố gắng xử lý thật bình tĩnh, nhẹ nhàng mà còn động viên để mọi người không hoang mang. Các anh chị đã ở trung tâm nhiều muốn để chăm sóc cho mọi người, nhưng đến khi hoàn thành cách ly được về nhà, các anh chị vẫn phải thực hiện cách ly tập trung thêm hai tuần nữa vì đã tiếp xúc với người bệnh. Chị bác sĩ có tâm sự với em, đã gần 7 tháng rồi chị chưa về nhà thăm con. Mỗi anh chị đều mỗi câu chuyện rất khác nhau, nhưng tất cả đều cùng chung hi sinh cuộc sống cá nhân cho cộng đồng, cho đất nước và cho cả những con người các anh chị chưa từng quen ở đây. Có lẽ cùng vì vậy, với mỗi bạn, sự hiện diện của các anh chị thật gần gũi thân quen như những người thân trong gia đình.
(Theo Con đã về nhà, Tăng Quang, NXB Phụ nữ Việt Nam)
a. Trong câu văn mở đầu đoạn trích trên, qua lời kể của tác giả, các bác sĩ đang làm gì?
b. Tìm 4 từ thuộc trường từ vựng chỉ lĩnh vực ngành y trong đoạn trích.
c. Chỉ ra và nêu tác dụng của một biện pháp tu từ trong câu văn sau: Mỗi anh chị đều mỗi câu chuyện rất khác nhau, nhưng tất cả đều cùng chung hi sinh cuộc sống cá nhân cho cộng đồng, cho đất nước và cho cả những con người các anh chị chưa từng quen ở đây.
d. Đoạn trích khơi gợi trong em tình cảm gì?