I was very angry. My friend John refused ______ me a lift as he had promised.

Xác định một từ/cụm từ SAI về ngữ pháp/hoặc ngữ nghĩa/logic/phong cách.

Với từng cá nhân, AI rất hữu ích trong việc thay đổi cách dạy và cách học của giáo viên và học sinh, nhưng việc nỗ lực biến các công cụ này thành công cụ hỗ trợ chính thức trong các cơ quan hành chính chưa đem lại kết quả khả quan.

Chọn ý đúng: Chất dinh dưỡng chính có trong phân bón là gì?

Choose A, B, C or D to complete each dialogue.

Jenny: “Thanks for the nice gift you bought to us!”

Peter: “______”

Hiện nay, dân số Hoa Kì đứng thứ mấy trên thế giới?

Một chất điểm dao động điều hòa có vận tốc bằng không tại hai thời điểm liên tiếp \({t_1} = 2,2{\mkern 1mu} \left( s \right)\) và \({t_2} = 2,9{\mkern 1mu} \left( s \right)\). Tính từ thời điểm ban đầu (\({t_o} = 0{\mkern 1mu} s\)) đến thời điểm \({t_2}\) chất điểm đã đi qua vị trí cân bằng số lần là:

Choose A, B, C or D to answer each question.

You are in a new fitness class with people you don't know. The instructor asks for volunteers to demonstrate a move. You want to participate but are shy. What can you say?

Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

Hi Emma,

a. Please keep it a secret, as it’s going to be a surprise for Jake. Let me know if you can make it.

b. We’ll have games, music, and lots of food, including his favorite pizza and cake.

c. I hope you’re doing well! I’m writing to let you know that I’m throwing a birthday party for my brother Jake next Saturday at our house. It starts at 5 PM, and I’d love for you to come! 

d. I think it would be a great opportunity for everyone to catch up and have some fun. Plus, it wouldn’t be the same without you there!

e. Looking forward to celebrating together!

Best wishes,

LK

Phân lớp d có thể chứa số electron tối đa là

Một sinh viên thực hiện thí nghiệm tổng hợp ethyl acetate từ ethyl alcohol và acetic acid (xúc tác acid \(\mathrm{H}_{2} \mathrm{SO}_{4}\). Sinh viên thu được hỗn hợp Y gồm acetic acid, ethyl acetate, ethyl alcohol và chất xúc tác. Hãy đề xuất phương pháp tách ester ra khỏi hỗn hợp trên.

Điôt là linh kiện bán dẫn có vỏ bọc bằng:

Những thông tin của các ngành khoa học xã hội và nhân văn hỗ trợ Sử học tìm hiểu và nghiên cứu lịch sử một cách toàn diện, cụ thể và chính xác hơn vì những thông tin này

Choose one word whose underlined part is pronounced differently:

Phát biểu nào không đúng với đặc điểm tầng đá trầm tích?

Phản ứng hoá học nào dưới đây là phản ứng oxi hoá-khử?

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions

[I] A newborn baby can see, hear and feel. By the age of five, a child can talk, ride a bike and invent imaginary friends. How does this development happen? [II]We don't understand the way language, thinking and planning develop very well. [III]Now scientists are using new technology to ‘see’ into children's brains. And they are discovering new information about the way a baby's brain develops. [IV]

A study in 2010 showed that children who were afforded more focus often gained an edge in IQ. The brain of a newborn infant contains nearly a hundred billion neurons. This number is comparable to that of an adult's brain. As they mature, an infant assimilates information through the sensory modalities of sight, hearing, smell, taste, and touch. This information fosters intricate connections between different regions of the brain. By the age of three, there are approximately a hundred trillion synaptic connections.

One experiment looked at images of babies' brains while they were listening to different sounds. The sounds were in different sequences. For example, one sequence was mu-ba-ba. This is the pattern ‘A-B-B’. Another sequence was mu-ba-ge. This is the pattern ‘A-B-C’. The images showed that the part of the brain responsible for speech was more active during ‘A-B-B’ patterns. This shows that babies can tell the difference between different patterns. This experiment is interesting because sequences of words are important to grammar and meaning. Compare two sentences with the same words in a different order: ‘John killed the bear’ is very different from ‘The bear killed John.’ So babies are starting to learn grammatical rules from the beginning of life.

Researchers also know that babies need to hear a lot of language in order to understand grammar rules. But there is a big difference between listening to television, audiobooks or the internet, and interacting with people. One study compared two groups of nine-month-old American babies. One group watched videos of Mandarin Chinese sounds. In the other group, people spoke the same sounds to the babies. The test results showed that the second group could recognize different sounds, however, the first group learned nothing. The scientist, Patricia Kuhl, said this result was very surprising. It suggests that social experience is essential to successful brain development in babies.

According to paragraph 3, which of the following is NOT a finding of the sound sequence experiment?

Mạng lưới ngành dịch vụ có qui mô lớn hay nhỏ phụ thuộc vào đặc điểm nào?