Vào những năm 1670, Antonie van Leewenhoek đã phát hiện ra nguyên sinh động vật nhờ quan sát mẫu vật nào?

Số nghiệm của phương trình \(\sqrt {{x^2} - 3x + 1} = 4x - 1\) là?

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

Parents of a Tokyo elementary school are up in arms at being asked to pay 730 dollars for their child's school uniform. A public elementary school in Tokyo's upmarket Ginza district has decided to adopt new school uniforms designed by the luxury Italian designer Armani. The bespoke uniforms, which include a hat and bag, are priced at over 80,000 (730 dollars) each. Parents are angry at the school's decision and are protesting at what they view as the exorbitant price for a uniform of an eight-year-old chilThe school said it wanted a designer uniform that represented the rich area of GinzSchool officials visited top department stores and decided to ask the fashion brand Armani to design the uniform.

The expensive uniform has created such a fuss that it has been discussed in Japan's parliament. One lawmaker said that since the school is public and not private, "a certain price range needs to be considered". Finance Minister Taro Aso sai"Clearly it's expensive. It would be tough if a student could not afford to pay for it." Japan's education minister said steps would be taken to ensure the financial burden placed on parents for uniforms, "would not be excessive". Twitter users said young children are not interested in designer clothes. The school principal sai"With humility, I take the criticism that the explanation has been insufficient and not well-timeI will go on explaining carefully to those concerned."

(Source: https.//www.japantimes.co.jp/news/2018/02/09/national/armani-parents-question-pricey-uniforms-public-school-tokyos-ginza-district/)

What does the passage mainly discuss?

Trong tình huống dưới đây, những ai nào đã vi phạm quyền được đảm bảo an toàn và bí mật thư tín, điện thoại, điện tín của công dân?

"Chị A và chị P cùng làm việc tại phòng kế toán Công ty M. Một hôm, chị A mượn điện thoại của chị P để gọi điện. Trong lúc chị P ra ngoài, chị A đã tự ý đọc tin nhắn nên biết việc chị P dự định chuyển sang công ty khác. Chị A đã chụp lại thông tin này và báo với anh V (trưởng phòng nhân sự của công ty)".

Điện áp tức thời giữa hai đầu đoạn mạch xoay chiều là \(u=120\sqrt{2}\text{cos}50\pi t\) (V). 

Tần số dao động của điện áp này là Y Hz. Tìm Y

Việt Nam là thành viên của tổ chức liên kết khu vực nào sau đây?

Đâu là ý đúng: Có phương pháp tạo giống nào?

Cho nửa khoảng $A = [ 0 ; 3)$ và $B = (b ;10]$. Khi đó, $A \cap B = \varnothing$ nếu

Nguyên tử sodium (Na) có 11 proton trong hạt nhân. Khi Na tác dụng với khí chlorine (Cl₂) sẽ thu được muối sodium chloride (NaCl), trong đó Na tồn tại ở dạng ion Na⁺. Ion Na⁺ có bao nhiêu proton trong hạt nhân?

Các hiện tượng nào sau đây có thể làm gia tăng mức độ cạnh tranh giữa các cá thể trong quần thể?

I. Một số cá thể tách đàn, di cư sang nơi ở khác.

II. Số lượng cá thể của quần thể vượt quá khả năng cung cấp thức ăn của môi trường.

III. Không gian thuận lợi cho sinh sản (như làm tổ) trong môi trường sống không đáp ứng đủ nhu cầu của các cá thể trong mùa sinh sản.

IV. Điều kiện môi trường sống trở nên không thuận lợi, dẫn đến suy giảm nguồn dinh dưỡng.

V. Các cá thể của quần thể có xu hướng phân bố ngẫu nhiên trong môi trường.

Cách mạng tư sản Đức (1864 – 1871) diễn ra dưới hình thức nào sau đây?

Read the following passage about managing change 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. 

Growing up in Athens, Greece, Lydia Borsi remembers feeling tested when she tried to deal with mental health issues. Borsi says she had been seeing a therapist for anxiety. But she notes that people in Greece do not openly discuss mental health issues, which also get little attention in general healthcare services. “It was a lot more secretive. And people thought that I was a lot more unique,” Borsi said.

That all changed in 2017 when she moved to the United States to study at the University of Rochester in Rochester, New York. “When I came here, I really liked that people were not afraid to speak up about mental health and say that it’s important,” she said. The university was very supportive of her needs and offered plenty of information. She also became involved with a school group called Active Minds that helps students deal with mental health issues. [A]

Then due to the spread of the novel coronavirus, the University of Rochester had to move all its classes and some of its mental health resources online. Luckily, Borsi was able to connect with a mental health expert outside the school, in the local community. [B]

But as many of her American friends returned home, Borsi was stuck. Greece had succeeded in limiting the spread of the virus within its borders, but flights there from the U.S. are barred until July. Also, the health crisis has put her plans to seek admission to medical school in Britain on hold. [C] And she is not alone.

[D] In April, Active Minds launched a survey of over 2,000 students at U.S. colleges and universities. The study found that over 80 percent of those asked said the coronavirus crisis had negatively affected their mental health. One in five said it has affected them severely.

Laura Horne, chief program officer at Active Minds, says the findings are especially troubling given that the crisis is only going to make it harder for colleges and universities to help these students. “Colleges and universities had to pivot rather quickly to respond to COVID-19 and figure out all facets of university life, including mental health services. Now they have to figure out how to communicate with students,” Horne said.

Frank Chen is a Houston, Texas-based psychiatrist who has worked with college-age young adults. He points out that individuals at that age are in an important stage of their mental development. And college can be a difficult experience for students with or without mental health issues, as they balance work, studies, and personal relationships. Adding a major world event, like the spread of the coronavirus, makes it very difficult to predict what the long-term psychological effects might be. “I don’t think that there’s another event in the history of the people who are alive now that can really measure up to this,” said Chen.

The word ‘they’ in paragraph 6 refers to

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

URBANISATION: A GROWING PHENOMENON

     Urbanisation is the process through which cities grow, and higher populations begin to inhabit urban areas. This phenomenon has accelerated significantly over the past few decades due to various factors. One of the primary drivers is the search for better employment opportunities. In rural areas, job prospects are often limited to agriculture and small-scale industries, which might not provide sufficient income. Consequently, people migrate to cities seeking better livelihoods and living standards.

     Additionally, urban areas offer more advanced educational facilities and healthcare services compared to rural regions. Many families move to cities to provide their children with higher-quality education and greater future opportunities. Access to hospitals and specialized medical services also attracts people to urban centers, especially in countries where rural healthcare is underdeveloped.

     However, rapid urbanisation brings about several challenges. Overcrowding in cities can lead to inadequate housing, strained infrastructure, and increased pollution. The expansion of urban areas often results in the loss of green spaces and agricultural land, impacting food production and the environment. Governments and city planners must address these issues to ensure sustainable urban growth.

     Despite these challenges, urbanisation has several positive aspects. Cities are often cultural melting pots, where diverse groups of people interact, leading to vibrant communities and innovation. The concentration of resources and talents in urban areas can drive economic growth and technological advancements.

The word This phenomenon in paragraph 1 refers to ____.

Cung cấp một nhiệt lượng 61600 J để nung nóng một khối kim loại nặng 1 kg từ 20 ^oC lên 90 ^oC. Nhiệt dung riêng của khối kim loại này là bao nhiêu J/kg.K?

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

Nam: Do you want me to help with your homework?

Lan: ______

Thông tin là gì?

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.

a. Maya: I use a fitness tracker on my wrist, and it counts my steps while I'm walking around the neighborhood.

b. Tyler: I got a new smart water bottle yesterday, and it reminds me to drink water with colorful lights.

c. Tyler: Maybe we could connect our devices and challenge each other, or we could just go hiking this weekend without any technology!

d. Tyler: The app also tracks how much water I drink, and it gives me little badges when I reach my daily goals.

e. Maya: That sounds really cool, but I don't think I need a bottle to remind me to stay hydrated.

Một chất điểm dao động theo phương trình x = 6 cos ωt (cm). Dao động của chất điểm có biên độ là.

Văn bản được kể theo ngôi thứ mấy?

Ngay khi thành lập (1967), tổ chức ASEAN đã

Trong quang hợp, NADPH có vai trò nào?