Trong một khu rừng, người ta ước tính đang có 800 con hà mã, 1500 con cá sấu và 2100 con ngựa vằn. Tốc độ tăng trưởng của hà mã là \(4 \%\) mỗi năm, trong khi đó số ngựa vằn lại giảm \(3 \%\) mỗi năm. Số lượng cá sấu tăng \(2 \%\) mỗi năm.
Sau 10 năm, số lượng ngựa vằn còn lại trong rừng gần nhất với giá trị nào sau đây?
Đề Thi Tham Khảo Đánh Giá Năng Lực Năm 2025 – ĐHQG Hà Nội – Đề Số 2 mang đến cho thí sinh một trải nghiệm thi cử mới mẻ, bám sát chương trình GDPT 2018, kiểm tra khả năng Giải Quyết Vấn Đề, Tư Duy Sáng Tạo, Giao Tiếp và Hợp Tác. Với thời lượng 195 phút, bài thi bao gồm ba phần: Toán Học Và Xử Lí Số Liệu/Tư Duy Định Lượng, Văn Học - Ngôn Ngữ/Tư Duy Định Tính và Khoa Học/Tiếng Anh. Mỗi phần đều có dạng thức câu hỏi phong phú như trắc nghiệm nhiều phương án lựa chọn và điền đáp án, đảm bảo đánh giá toàn diện năng lực học sinh trên nhiều khía cạnh học thuật khác nhau.
Câu hỏi liên quan
Cho các tập hợp:
A = {x ∈ ℤ | –1 < x < 6}; B = {x ∈ ℤ | 0 ≤ x ≤ 1}.
Xác định A \ B. Câu nào sau đây đúng?
Vào khoảng thời gian nào cư dân Địa Trung Hải bắt đầu biết chế tạo công cụ bằng sắt?
Read the following advertisement about a new travel platform and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 1 to 6.
UNDERSTANDING GLOBALIZATION
Have you ever wondered how various countries become more interconnected? Globalization is the process (1) _____ for the exchange of ideas, goods, and services across the world. This phenomenon has (2) _____ many businesses to expand their markets beyond national borders. With the rise of technology and communication, companies can now communicate (3) _____ customers and partners globally. However, globalization also raises important questions about cultural identity and economic inequality. (4) _____ losing our local traditions in favour of a more homogenized culture? To explore these issues, join our upcoming seminar on globalization. Experts will discuss (5) _____ economies and societies. They will also provide insights into how we can navigate this complex landscape. Don't miss this opportunity (6) _____ your understanding of the world!
Choose the word(s) OPPOSITE in meaning to the underlined word(s).
I think we cannot purchase this device this time as it costs an arm and a leg.- Mệnh đề A đúng thì mệnh đề phủ định A sai. Ngược lại, mệnh đề A sai thì mệnh đề phủ định A đúng.
Cho hai mệnh đề: P: "30 không chia hết cho 5" và Q: "π<3,15". Khẳng định nào sau đây đúng?
If energy _______ inexpensive and unlimited, many things in the world would be different.
Read of the following leaflet and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 7 to 12.
Different Paths, One Journey: Celebrating Humanity Together
A Global Cultural Festival
Join Our Celebration
Some people like busy city life, while (7)_________ enjoy quiet country living. We want to bring people together and help them (8)_________ each other.
The festival will show many (9)_________ of music from around the world. (10)_________ our plan, the event will last for three days.
The party will have many (11)_________ and fun activities for everyone. (12)_________ of the food will be there, with some of the dishes from different countries.
Things To Do:
Try foods from different countries
Watch dance shows
Learn simple words in new languages
Make friends from other places
Play games from around the world
Contact: hello@festival.org | 555-1234
"We are different but we are friends!"
Cho các biến cố \(A\) và \(B\) thoả mãn \(P(A)=0,45\); \(P(B)=0,75\) và \(P(A\cap \overline {B})=0,3\). Khi đó \(P(A\mid B)\) bằng:
Read the following passage about endangered languages and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questionsfrom 31 to 40.
[I] Social media has become a dominant force in modern communication, offering a range of benefits and challenges. [II] It has revolutionized the way people interact, share information, and even form relationships. [III] While these platforms offer opportunities for connection and expression, they also have their drawbacks. [IV] For instance, excessive use of social media has been linked to a range of negative effects, including mental health issues, social isolation, and decreased productivity. [V] However, when used responsibly, social media can also offer a variety of positive outcomes, such as the ability to stay connected with loved ones, network professionally, and access valuable information and resources.
One of the major benefits of social media is its ability to keep people connected. For example, individuals who live far apart can maintain close relationships through regular communication on these platforms. Social media also facilitates professional networking, allowing users to connect with potential employers or clients, and enabling companies to promote their products and services to a global audience. Additionally, platforms like Facebook, Twitter, and Instagram provide a space for people to share ideas, opinions, and creative work, fostering a sense of community and collaboration.
Despite these advantages, there are serious concerns about the negative impact of social media, particularly on mental health. Studies have shown that excessive social media use can contribute to feelings of anxiety, depression, and loneliness. This is often attributed to the unrealistic portrayals of life that are commonly shared on these platforms, leading to comparisons that can make individuals feel inadequate or left out. Furthermore, constant exposure to negative news or online bullying can exacerbate these feelings and contribute to long-term psychological stress.
Another issue with social media is its potential to distract people from their daily responsibilities. With notifications constantly popping up and endless streams of content to scroll through, individuals may find it difficult to focus on tasks such as work, school, or personal obligations. This can result in decreased productivity and a lack of attention to important matters.
Ultimately, the impact of social media depends on how it is used. If individuals are mindful of their usage patterns and take steps to limit their time on these platforms, they can enjoy the benefits of staying connected and informed without the negative consequences. Parents, educators, and mental health professionals can also play a role in helping young people develop healthy habits and manage their social media use effectively.
The phrase "stay connected with " in paragraph 1 is CLOSEST in meaning to _______.
Dựa vào đâu để phân loại thị trường thành thị trường tư liệu tiêu dùng và thị trường tư liệu sản xuất?
Cần cẩu khi hoạt động, thực hiện trao đổi năng lượng với vật khác dưới dạng nào sau đây?
Phương án nào sau đây nêu đúng số bit 0 cần bổ sung để dạng nhị phân của 42010 đủ 16 bit?
Trong các câu sau, có bao nhiêu câu là mệnh đề?
(1): Số 3 là một số chẵn.
(2): 2x+1=3.
(3): Các em hãy cố gắng làm bài thi cho tốt.
(4): 1<3⇒4<2.
Read the following passage about Generations Z and Alpha: Born Multicultural Citizens and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22.
Generation Z, born between 1997 and 2012, has grown up in a world (18)_________. These young people use smartphones and computers every day to talk with friends from different parts of the world. If they had been born 30 years earlier, they would not have had these opportunities to experience global connections. They are learning about different cultures, languages, and traditions not just from books but through real online friendships.
Generation Alpha, which includes children born after 2013, is even more connected. The toys that Generation Alpha plays with often teach them about global issues while they have fun. Many schools (19)_________. These young students, who come from diverse backgrounds, are creating a new kind of society where differences are celebrated.
(20)_________. Generation Z students participate in exchange programs and travel more than previous generations did. (21)_________, sharing their daily lives and learning from each other.
The world that these generations are creating will be more inclusive and understanding. Traditional borders are becoming less important while cultural exchange is valued more highly. Generation Z and Alpha children, (22)_________, will likely become adults who solve problems together across cultural lines. The future looks promising with these multicultural citizens leading the way.
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 34 to 40.
Since the birth of the car in 1886, transport in big cities has changed a lot. And it is no wonder that many experts think that there will be extraordinary changes in the next few decades.
As technology develops, highways, skylines, subways will be all transformed. Smarter roadways and highways in cities outfitted with loT sensors will process all kinds of data in real time and alert users of the best transport options. Weather, crashes, traffic conditions will be communicated to users and smart stops will be found everywhere providing renewable energy, green hydrogen or even greener energy, ensuring efficiency and safety on every highway. Tunnels will also be a smart choice because of the reduction of traffic congestion. Underground roads will be built in 3D with a lift system which will take vehicles deep underground and will allow traffic to attain the greatest speed without intersections.
There will also be innovations in the sky. Air taxis are not a new idea, but in the future they will be completely environment-friendly. Aviation gasoline will be no longer used. Green energy will be in place and cost-effective air taxis will enable people to travel from one busy urban city to another in record time.
New technologies such as Al and the rollout of 5G will pave the way for fully autonomous innovation. Cars will not be the only thing to go autonomous. Freight trucks, cargo vehicles, air taxis will all benefit from this technology and that is why the term ‘driver’ will become extinct.
Transport will go green. Electric or hydrogen power will be mainstream. There will still be issues to solve such as safety, speed and cost, and of course governments will need to make new traffic laws.
(Adapted from Friends Global)
Which of the following could be the best title for the passage?
Để chúc mừng ngày khai trương, siêu thị X đã tổ chức rất nhiều hoạt động cho khách hàng trong đó có trò chơi vòng quay may mắn. Với mỗi hóa đơn trên 1 triệu đồng, 99 khách hàng đầu tiên sẽ nhận được một vòng tay có đánh số (từ 1 đến 99). Cuối ngày khai trương, siêu thị công khai quay số và tìm được 7 khách hàng có vòng tay số 13, 04, 34, 67, 11, 92, 79 may mắn trúng giải. Khi nhắc đến giải thưởng của khách hàng, MC chương trình đã cung cấp các thông tin như sau:
- Có 1 giải đặc biệt, 1 giải nhất, 1 giải nhì, 1 giải 3 và 3 giải khuyến khích.
- Khách hàng nhận giải đặc biệt cầm vòng tay có con số hàng chục lớn hơn 5.
- Tổng các chữ số hàng đơn vị của 3 khách hàng nhận giải khuyến khích bằng 11.
- Khách hàng nhận giải nhì không cầm vòng tay có số cao nhất hoặc thấp nhất.
- Khách hàng cầm vòng tay số 04 chỉ nhận giải ba hoặc khuyến khích.
- Nếu khách hàng nhận giải ba cầm vòng tay số 04 thì khách hàng nhận giải nhất không cầm vòng tay số 92.
Nếu khách hàng cầm vòng tay số 11 nhận giải khuyến khích thì khách hàng nhận giải nhất có thể cầm vòng tay số bao nhiêu?
Cho hàm số \(f(x)=k \sqrt[3]{x}+\sqrt{x}\). Với giá trị nào của \(k\) thì \(f^{\prime}(1)=\frac{3}{2}\) ?
Which of the following best restates each of the given sentences?
It is believed that people with mental health conditions, all over the world, are seen to be good and efficient workers.
Sông ngòi nước ta có tổng lượng nước lớn chủ yếu do
Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.
Centuries ago, man discovered that removing moisture from food helped to preserve it, and that the easiest way to do this was to expose the food to sun and wind. In this way the North American Indians produced pemmican (dried meat ground into powder and made into cakes), the Scandinavians made stockfish and the Arabs dried dates and apricots.
All foods contain water - cabbage and other leaf vegetables contain as much as 93% water, potatoes and other root vegetables 80%, lean meat 75% and fish anything from 80% to 60% depending on how fatty it is. If this water is removed, the activity of the bacteria which cause food to go bad is checked.
Fruit is sun-dried in Asia Minor, Greece, Spain and other Mediterranean countries, and also in California, South Africa and Australia. The methods used vary, but in general the fruit is spread out on trays in drying yards in the hot sun. In order to prevent darkening, pears, peaches and apricots are exposed to the fumes of burning sulphur before drying. Plums for making prunes, and certain varieties of grapes for making raisins and currants, are dipped in an alkaline solution in order to crack the skins of the fruit slightly and remove their wax coating, so increasing the rate of drying.
Nowadays most foods are dried mechanically; the conventional method of such dehydration is to put food in chambers through which hot air is blown at temperatures of about 110°C at entry to about 45°C at exit. This is the usual method for drying such things as vegetables, minced meat, and fish.
Liquids such as milk, coffee, tea, soups and eggs may be dried by pouring them over a heated horizontal steel cylinder or by spraying them into a chamber through which a current of hot air passes. In the first case, the dried material is scraped off the roller as a thin film which is then broken up into small, though still relatively coarse flakes. In the second process it falls to the bottom of the chamber as a fine powder. Where recognizable pieces of meat and vegetables are required, as in soup, the ingredients are dried separately and then mixed.
Dried foods take up less room and weigh less than the same food packed in cans or frozen, and they do not need to be stored in special conditions. For these reasons they are invaluable to climbers, explorers and soldiers in battle, who have little storage space. They are also popular with housewives because it takes so little time to cook them.
What is the main idea of the passage?
