Trong không gian Oxyz, hình chiếu vuông góc của điểm \(A(3;4;-5)\) trên trục Oy là điểm nào dưới đây?

Các cuộc cách mạng công nghiệp thời kì hiện đại đem lại tác động tiêu cực nào dưới đây đối với xã hội?

Khi muối dưa chua, người ta thường cho thêm 1 ít nước dưa của lần muối trước vào cùng. Việc làm này có mục đích gì?

Cho các mệnh đề:

$A$: "Tổng hai cạnh của một tam giác lớn hơn cạnh còn lại".

$B$: "$\exists x \in \mathbb{R}: \, x^2+5x-6=0$".

$C$: "$\sqrt{125}$ là số nguyên".

$D$: "Phương trình: $x^4+2x^2+3=0$ có nghiệm".

Trong các mệnh đề phủ định của các mệnh đề trên có bao nhiêu mệnh đề đúng?

Hệ thống nào được sử dụng phổ biến?

Read the following passage about food addiction and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

Few people would disagree that one of the world's most popular dishes is pizza. Twenty-two-year-old Zack certainly wouldn't. He would eat a variety of pizza-based items, including homemade pizza, precooked microwave pizza, and even pizza leftovers from the night before. He was consuming 800kg of pizza a year. As a child, Zack had eaten a wide variety of food. But he became addicted to pizza when he started secondary school. American school meals have often been criticised for the large amount of fast food present on the menu, and pizza is the star dish. Zack even spent all his pocket money on slices of pizza.

Naturally, Zack's family worried about his high-calorie, low-vitamin diet. So did Zack. In an attempt to break his addiction, Zack agreed to appear on a TV programme called Freaky Eaters. Its aim was to encourage food addicts to beat their addictions with the help of a psychologist and nutritionist. It wasn't easy. He had to eat a fish dish, while his brother sat in front of him enjoying... a pizza! However, Zack met the challenge and has never eaten pizza again.

Seventeen-year-old Stacy Irvine's friends visit her and discover that she has been rewarded thousands of free toys from fast food restaurants as a regular customer. Stacy's mother often gave her two-year-old girl a portion of fried chicken in a McDonald's restaurant. [I] Since then, Stacy has refused to eat anything else except for pieces of fried chicken, and as a result, her diet has created serious health. She has been warned that if she doesn't change her diet, she will die. [II] Stacy once collapsed due to lack of vitamins and nutrients and needed to be hospitalised. [III] She insisted that Stacy adopt a healthier lifestyle. However, worryingly, Stacy's mother said that while Stacy was beginning to understand the seriousness of her situation, she couldn't eat anything else but chicken nuggets. [IV]

Twenty-year-old Hanna Little was keen on chips. The only thing that Hanna consumed for fifteen years was one plate of chips after another. Not surprisingly, a diet that contained few nutrients and an excess of fat and carbohydrates could only have negative consequences. And it did because not only did Hanna develop health problems, but she also had to leave her job after collapsing at work. At five, Hanna became addicted to chips and refused to eat fruits and vegetables despite her mother's efforts. Hanna says that she was terrified of tasting the flavour of different types of food and she would feel anxious just at the idea of doing it. Parties, picnics and barbecues with friends and family used to be a nightmare. Furthermore, Hanna was soon seen as 'odd' by her friends' parents.

It wasn't until the age of sixteen that Hanna realised she had Selective Eating Disorder (SED). Despite this new knowledge, no solution was found. It wasn't until she lost her job before she started eating normally. Hanna sought therapy from psychologist Felix Economakis, who used hypnosis, a treatment that none of the doctors that she had seen before had mentioned, to get her to eat fruit after one one-hour session, and since then she has been willing to eat anything.... including chips!

(Adapted from Friends Global)

Where in paragraph 3 does the following sentence best fit?

The doctor who treated her said she had never seen such an extreme case of food addiction.

Nguyên tử Y có xu hướng nhận 3 electron để đạt được lớp electron ngoài cùng bền vững của khí hiếm Ar. Y là

Mệnh đề phủ định của "Bất phương trình $x-2<0$ vô nghiệm" là

Hoạt động của Chính phủ thể hiện qua mấy hình thức?

Mark the letter A, B, C or D 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

Dear Mrs. Mai,

a. I hope you’re doing well and enjoying your day.

b. Happy Teachers’ Day! I want to send my best wishes to you.

c. I’m so grateful for all of your help and support throughout the years.

d. I look forward to visiting you soon to catch up and thank you in person.

e. I wish you good health and happiness.

Best regards,

Lan

Yêu cầu đối với người làm nghề thiết kế kĩ thuật cơ khí động lực là:

Kết quả của các câu lệnh sau là gì?

s = "12 34 56 ab cd de "

print(s. find(" "))

print(s.find("12"))

print(s. find("34"))

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

In Germany, it's important to be serious in a work situation. They don't mix work and play so you shouldn't make jokes (31) ______ you do in the UK and USA when you first meet people. They work in a very organized way and prefer to do one thing at a time. They don't like interruptions or (32) ______changes of schedule. Punctuality is very important so you should arrive on time for appointments. At meeting, it’s important to follow the agenda and not interrupt (33) ______speaker. If you give a presentation, you should focus (34) ______ facts and technical information and the quality of your company's products. You should also prepare well, as they may ask a lot of questions. Colleagues normally use the family names, and title - for example 'Doctor' or 'Professor', so you shouldn't use first names (35) ______ a person asks you to.

Question 34

 Bộ xử lý trung tâm là?

Cho biết: Plasmist là ADN vòng, mạch kép có trong?

Những ai trong trường hợp dưới đây đã không vi phạm quy định của pháp luật về quyền bình đẳng giữa các dân tộc trên phương diện kinh tế?

Trường hợp. Để mở rộng sản xuất, Công ty X đăng tin tuyển dụng 3 kĩ sư tin học biết tiếng Anh vào làm việc. Đối chiếu với các tiêu chuẩn mà công ty đề ra đối với ứng viên, anh Q và chị M thấy mình đều đủ cả nên đã đăng kí dự tuyển. Tuy nhiên, hồ sơ của anh Q không được anh P (Giám đốc Công ty X) chấp nhận vì lí do anh Q là người dân tộc thiểu số.

Cho hình chóp S.ABCD có đáy ABCD là hình vuông cạnh a, tam giác SAB đều và \(SC = a\sqrt 2 \). Gọi H là trung điểm của AB. Hình chiếu vuông góc của điểm S trên mặt phẳng (ABCD) là điểm?

Quan điểm nào sau đây là không đúng về quyền và nghĩa vụ của công dân trong bảo vệ Tổ quốc?

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.

Where in paragraph 1 does the following sentence best fit?
"Scientists are now conducting experiments to understand how babies process language patterns."

Theo tiêu chuẩn của Uỷ ban tăng cường sức khỏe HPB, lượng đường dung nạp thêm mỗi ngày không nên vượt quá \(50\) g. Biết một kilogam bánh quy chứa trung bình \(150\) g đường, một ly trà sữa chứa trung bình \(55\) g đường. Gọi \(x\), \(y\) tương ứng là khối lượng bánh quy và số ly trà sữa tiêu thụ trong một tuần của một người.

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

Dear Nhung,

a. I hope this email finds you well. I’m writing to let you know that I’ll be arriving in Hanoi next Monday and wanted to ask if you’ll be at home then. 

b. Would it be possible for you to meet me at the airport?

c. Please let me know once you’ve received this email. I’m looking forward to hearing from you soon!

d. By the way, I was wondering if you could recommend some historical sites in northern Vietnam. 

e. I am also planning to visit a few places there to gather materials for my Cultural Studies presentation.

Best regards,

Anna