Lực F tác dụng lên một tiết diện hình vuông cạnh L . Nếu sai tỉ đối trong xác định L là 2% . Xác định F là 4% thì sai tỉ đối của phép đo áp suất là bao nhiêu ?

Phân biệt sự khác nhau giữ 2n đơn và n kép ?

Nếu được quyết định thiết kế một nhà máy điện em sẽ chọn cách nào để sản xuất điện? Tại sao cách đó tốt hơn những cách khác ?

Biểu diễn miền nghiệm của bất phương trình x + y $\le$0 trên mặt phẳng tọa độ
Biểu diễn miền nghiệm của bất phương trình x - y $\ge$ 0 trên mặt phẳng tọa độ

Nhà phê bình văn học Bielinxki đã từng nói: “Tuổi trẻ không có lí tưởng giống như buổi sáng không có mặt trời”. Hãy viết bài văn nghị luận (khoảng 600 chữ) bàn về vấn đề tuổi trẻ cần có lí tưởng sống.

Cần bao nhiêu gam hơi nước ở nhiệt độ  130^oC để làm nóng 200g nước đựng trong bình thủy tinh 100g từ 20^oC đến 50^oC. Biết nhiệt dung riêng của thủy tinh là  c_t = 837 J/kg.K; nhiệt dung riêng của nước là c_nước = 4190 J/kg.K; nhiệt dung riêng của hơi nước ở 100^oC là chơi = 2010 J/kg.K và nhiệt hóa hơi riêng của nước là L = 2,26. 106 J/Kg ?

I. Underline the correct words or phrases.
1.Cattle usually cross over the road. You should drive more careful / more carefully.

2.Life in some parts of the country is boring / more boring than that in other parts.

3.The old usually get up earlier / more early than the young. 
4.An ox doesn't plough weller / better than a buffalo. 
5.These 7 thinking habits will help you become more confident / more confidently. 
6.Don't worry. The river is not as deep / deeper as it looks.

The workshop is so interesting that we aren't wanting to leave now.

                       A             B                           C                    D

he students will get the results.....

A. until the teacher will finish marking the papers

B. when the teacher finishes marking the papers

C. after the teacher had finished marking the papers

D. as soon as the teacher finished marking the papers

XII. Reorder the given words and phrases to form meaningful sentences.

1. improved / decades. / living / have / Our / the / over / few / conditions / last (10 words) 
2. fat / simple / by / You / this / burn / exercise. / can / doing (9 words)

3. are / by / bacteria. / to / Antibiotics / treat / caused / infections / often / used (10 words)

giải thích ngữ pháp từng câu giupd mình 1. " let's go dancing,..... ?" - " yes , let's " A. will we B. do we C. don't we D. shall we 2................ here , he would help us with these troubles A. Were Peter B. If were Peter C. Unless were Peter D. Unless Peter were

1.I like doing puzzles alone more than playing basketball with friends. I prefer ____________________________________________________________________
2.She likes to hang out with friends on Saturday evening. She's interested ____________________________________________________________
3.I like cooking, making crafts, reading, and surfing the net in my free time. My leisure activities ________________________________________________________
4.Could you help me with this box? Would you mind ____________________________________________________________
5.DIY skills aren't as hard to learn as I think. DIY skills are ______________________________________________________________ 
6.Who will take care of the garden while you are away? Who will look ______________________________________________________________ 
7.How about going window-shopping this afternoon? Shall ______________________________________________________________________ 
8.What leisure activity do you like most? What's _____________________________________________________________________

Viết một đoạn văn khoảng 200 chữ nêu cảm xúc của em về bài thơ Mẹ của tác giả Tô Hoàn

Phần văn bản (Cloze Test)
Many people are finding fun and useful ways to (1) ______ old things instead of throwing them away. For example, you can turn old (2) ______ into shopping bags or small pillows. Some people use glass bottles as (3) ______ for flowers, which makes their homes look more beautiful. Others create shelves from old wooden (4) ______ to keep their books or plants. These simple ideas help reduce (5) ______ and make the world a greener place.

Các lựa chọn đáp án
Câu                        A                                          B                           C                             D
1                        recycling                           reusethrow                 away                        kept
2                        chicken                               orange                     juicewater               clothes
3                        tree                            vases (ghi nhầm là jars)        plastic                   leaf
4                      pot                                     bed                                  boxes                   spoon
5                     waste                             environment                     biodiversity              energy
(Lưu ý: Ở câu số 3, đáp án B trong ảnh ghi là "jars", tuy nhiên dựa trên ngữ cảnh "đựng hoa" thì từ phù hợp nhất thường là "vases", nhưng trong các lựa chọn này bạn chọn B. jars là hợp lý nhất).

Đáp án gợi ý cho bài đọc:

1.B. reuse (cấu trúc to + V-inf)
2.D. clothes (quần áo cũ mới có thể làm thành túi hoặc gối)
3.B. jars (bình/lọ thủy tinh đựng hoa)
4.C. boxes (hộp gỗ làm giá sách)
5.A. waste (giảm thiểu rác thải)

IX. Viết lại câu sao cho nghĩa không đổi. 1. It takes us more than two hours to see the film “Avatar”. The film “Avatar” 2. She likes to hang out with friends on Saturday evening. She’s interested 3. She only allows her children to watch television at weekends. She only lets 4. Could you help me with this box? Would you 5. DIY skills aren’t as hard to learn as I think. DIY skills are 6. Who will take care of the garden while you are away? Who will look 7. How about going window-shopping this afternoon? Shall 8. What leisure activity do you like most? What’s

VI. Read and choose the correct answer to each of the questions.
Have you ever felt so passionate about something that you couldn’t stop thinking about it? That overwhelming
feeling of excitement and dedication is what makes following your passions so rewarding. For teenagers,
discovering their passions can be a significant step towards a fulfilling future.

Passions can take many forms. It could be a love for music and playing an instrument, a fascination with science
and conducting experiments, or a talent for writing and expressing oneself creatively. When teenagers pursue their
passions, they often experience a sense of purpose and motivation. They become eager to learn, develop new
skills, and overcome challenges.
However, focusing on a passion isn’t always easy. There may be times when friends seem more interested in
different things, or family expectations can seem at odds with personal aspirations. It’s important to remember
that pursuing a passion requires commitment and perseverance. There will be setbacks and moments of doubt,
but the feeling of accomplishment and satisfaction from pursuing something you truly love is worth the effort.
1. What can be the best title for the passage?
A. "Teenagers and Their Hobbies" B. "The Importance of Family Expectations"
C. "Overcoming Challenges in Pursuing Passions" D. "Discovering and Following Your Passions"
2. What is the main benefit of following one's passions, according to the passage?
A. Feeling overwhelmed B. Developing new skills
C. Facing setbacks D. Meeting family expectations
3. Why might it be challenging to focus on a passion?
A. Friends are not interested B. Family expectations conflict
C. Personal aspirations are unclear D. Pursuing passions is effortless
4. According to the passage, why do teenagers experience a sense of purpose when pursuing their passions?
A. They want to impress their friends B. They need to overcome challenges
C. They become motivated D. They love music
5. What does the word “perseverance” in the passage mostly mean?
A. laziness B. determination C. indifference D. confusion

Tôi không nói bằng chiếc lưỡi của người khác

chiếc lưỡi đi qua ngàn cơn bão từ vựng

chiếc lưỡi trồi sụt trên núi đồi thanh âm, trên thác ghềnh cú pháp

chiếc lưỡi bị hành hình trong một tuyên ngôn

Tôi không nói bằng chiếc lưỡi của người khác

cám dỗ xui nhiều điều dại dột

đời cũng dạy ta không thể uốn cong

dù phần thắng nhiều khi thuộc những bầy cơ hội

Trên chiếc lưỡi có lời tổ tiên

Trên chiếc lưỡi có vị đắng sự thật

Trên chiếc lưỡi có vị đắng ngọt môi em

Fill in the blank with the correct form of the word in the bracket. Question 6 Many animals were burnt to (die)_______in the forest fire. Question 7 The (destroy)_______rearthquake made thousands of people homeless. Question 8 Everyone should know about their local (evacuate)_______plan in order to stay safe during natural disasters. Question 9 Loss of lives and (extent)_______damage to properties were reported after the flash flood in Nghe An.

On the farm, uncle Duong showed us how to…………. cucumbers. A. plough B. produce C. pick D. put up

TEXT CONTENT
2. Read the text and choose the answer (A, B, C or D) that best completes each gap. 
Thanh Tien, a village in Phu Mau Commune, Phu Vang District, is located about 10 kilometers from the centre of Hue city, (1) .................... the ancient town of Bao Vinh. The village is famous for its traditional (2) .................... of making paper flowers. Local artisans skillfully make paper flowers of different types (3) .................... lotuses, roses, orchids, apricots, chrysanthemums, roses, gerberas, and dahlias, and of a wide range of colours. 
Around lunar October villagers begin making these paper flowers. They have to prepare bamboo sticks, paper and dying materials. Sometimes they (4) .................... to mix colours to create colours of their own wish that can satisfy their passion and imagination for the type of flowers they want to make. From mid lunar December when Tet is (5) .................... the corner, colourful paper flowers can be seen on many streets of Hue. People use paper flowers (6) .................... religious and decoration purposes. 
These days though fresh flowers are preferred, paper flowers (7) .................... an integral part in the spiritual life of many Hue people, who reserve a special place for these flowers on their ancestors’ altar. Making paper flowers not only provides an additional (8) .................... of income for local resident, but also is an art (9) .................... has been revived by passionate local artisans. It is this art that (10) .................... Thanh Tien a not-to-be-missed destination for tourists who come to Hue.
ANSWER CHOICES
1. A. front |                      B. opposite |                             C. face |                            D. next 
2.A. job |                             B. profession |                          C. skill |                           D. craft 
3.A. such as |                      B. for example |                        C. instead of |                  D. so that 
4.A. must |                          B. will |                                     C. use |                             D. have 
5.A. around |                      B. near |                                     C. next |                            D. beside 
6.A. in |                              B. for |                                       C. with |                            D. on 
7.A. stay |                          B. leave |                                    C. be |                                D. remain

Chỉ ra các biện pháp Pháp nghệ thuật đc tác giả sử dụng trong khổ 2 bài thơ "tràng giang " của huy cận

Part 3. Complete each sentence with appropriate form of the word in block capitals. 36. Friend’s family has suffered from his ______. EXPEND 37. The water from the stream should be ______ before you drink it. PURE 38. John told everyone that he worked for a large company, but the company is ________. EXIST 39. Jim is very disorganized and not very_______. BUSINESS 40. The principal said some_______ words to the pupils before the exam. COURAGE 41. Although we were in danger, Ann seemed quite________ . CONCERN 42. Some parents feel dismayed because of their children’s_________ BEHAVE 43. My sister has good _________ skills. She can relate to teenagers very well. PERSON 44. These young people are ________supporters of the new plan of our city. ENTHUSIASM 45.My uncle is in his forties. He is a well-built ________man AGE