Cho các tập hợp A, B, C được minh hoạ bằng biểu đồ Ven như hình vẽ dưới đây:

Phần tô màu xám trong hình vẽ biểu diễn của tập hợp nào sau đây?
Cho các tập hợp A, B, C được minh hoạ bằng biểu đồ Ven như hình vẽ dưới đây:
Phần tô màu xám trong hình vẽ biểu diễn của tập hợp nào sau đây?
Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
- $A \cap B$ là phần giao của A và B.
- $(A \cap B) \setminus C$ là phần giao của A và B mà không thuộc C.
Câu hỏi liên quan
Đọc đoạn thông tin và chọn đúng hoặc sai ở mỗi ý a, b, c, d sau đây:
“Vị trí địa lí và đặc điểm lãnh thổ đã tạo cho thiên nhiên của nước ta có sự phân hóa đa dạng, khác nhau giữa miền Bắc với miền Nam, giữa miền núi với đồng bằng,.. hình thành các miền địa lí tự nhiên khác nhau.”
a) Vị trí địa lí và đặc điểm lãnh thổ tạo nên sự đa dạng cho thiên nhiên nước ta)
b) Giữa miền Bắc và miền Nam không có sự khác biệt về tự nhiên.
c) Việt Nam hình thành các miền địa lí tự nhiên khác nhau.
d) Thiên nhiên Việt Nam không có sự khác nhau giữa miền núi với đồng bằng.
Đồ thị biểu diễn độ lớn lực tương tác giữa hai điện tích điểm trong chân không phụ thuộc vào khoảng cách r được cho như hình vẽ bên.
Tính tỉ số
Đâu là hình thức để công dân thực hiện đúng quyền tự do ngôn luận?
Cho các phát biểu sau:
(1) Mô là tập hợp các tế bào có cùng chức năng.
(2) Cơ quan là tập hợp các mô cùng thực hiện một chức năng nhất định.
(3) Quần thể là tập hợp các cá thể khác loài phân bố trong một khu vực nhất định.
(4) Quần xã gồm nhiều hệ sinh thái phân bố trong khu vực địa lí nhất định.
Số phát biểu đúng là
Cho tập hợp X={1;2;3;4}. Khẳng định nào sau đây đúng?
Giả sử một vệ tinh truyền thông đang đứng yên so với mặt đất ở một độ cao xác định trong mặt phẳng xích đạo Trái Đất, đường thẳng nối vệ tinh với tâm Trái Đất đi qua kinh tuyến số 0 hoặc kinh tuyến gốc. Coi Trái Đất như một quả cầu bán kính 6400km , khối lượng là và chu kì quay quanh trục của nó là 24h, hằng số hấp dẫn . Sóng cực ngắn phát từ vệ tinh truyền thẳng đến các điểm nằm trên xích đạo Trái Đất trong khoảng kinh độ nào?
Các hệ thống nào dưới đây kết hợp hài hoà với nhau để tạo nên sự phát triển bền vững?
Một người đi từ nhà tới cơ quan cách nhà 4 km. Trước đó người này đi theo hướng ngược lại 200 m để mua đồ ăn sáng. Cho rằng cả ba địa điểm này đều nằm trên một đường thẳng. Độ dịch chuyển của người đó khi đi từ nhà tới cơ quan là:
Đun một lượng nước tới nhiệt độ sôi, dưới áp suất khí quyển trong một chiếc ấm. Cho nhiệt hóa hơi riêng của nước là 2,3.106 J/kg. Nhiệt lượng cần thiết để có 100 g nước hóa thành hơi là
Chủ thể nào sau đây đang thực hiện chức năng làm chủ thể trung gian?
Cho vay thế chấp là hình thức cho vay đòi hỏi người vay phải có tài sản thế chấp có giá trị:
\(\lim _{x \rightarrow 1^{+}} \frac{x+1}{x-1}\) bằng
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:
For many people who live in cities, parks are an important part of the landscape. They provide a place for people to relax and play sports, as well as a refuge from the often harsh environment of a city. What people often overlook is that parks also provide considerable environmental benefits.
One benefit of parks is that plants absorb carbon dioxide - a key pollutant - and emit oxygen, which humans need to breathe. According to one study, an acre of trees can absorb the same amount of carbon dioxide that a typical car emits in 11,000 miles of driving. Parks also make cities cooler. Scientists have long noted what is called the Urban Heat Island Effect: building materials such as metal, concrete, and asphalt absorb much more of the sun’s heat and release it much more quickly than organic surfaces like trees and grass. Because city landscapes contain so much of these building materials, cities are usually warmer than surrounding rural areas. Parks and other green spaces help to mitigate the Urban Heat Island Effect.
Unfortunately, many cities cannot easily create more parks because most land is already being used for buildings, roads, parking lots, and other essential parts of the urban environment. However, cities could benefit from many of the positive effects of parks by encouraging citizens to create another type of green space: rooftop gardens. While most people would not think of starting a garden on their roof, human beings have been planting gardens on rooftops for thousands of years. Some rooftop gardens are very complex and require complicated engineering, but others are simple container gardens that anyone can create with the investment of a few hundred dollars and a few hours of work.
Rooftop gardens provide many of the same benefits as other urban park and garden spaces, but without taking up the much-needed land. Like parks, rooftop gardens help to replace carbon dioxide in the air with nourishing oxygen. They also help to lessen the Urban Heat Island Effect, which can save people money.
In the summer, rooftop gardens prevent buildings from absorbing heat from the sun, which can significantly reduce cooling bills. In the winter, gardens help hold in the heat that materials like brick and concrete radiate so quickly, leading to savings on heating bills. Rooftop vegetable and herb gardens can also provide fresh food for city dwellers, saving them money and making their diets healthier. Rooftop gardens are not only something everyone can enjoy, they are also a smart environmental investment.
Question 36: Based on its use in paragraph 2, it can be inferred that mitigate belongs to which of the following word groups?
Phát biểu nào sau đây là không đúng?
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 29 to 33.
International Women’s Day, celebrated on March 8th, is a time to honor women’s progress and advocate for real change towards gender equality. This day, rooted in a 1908 demonstration where 15,000 women in New York City stood united for equal rights, better pay, shorter hours, and voting rights, has grown into a worldwide movement. Clara Zetkin, at a meeting in 1910, suggested a special day each year to focus on women’s rights, leading to the first International Women’s Day in 1911.
Despite some beliefs that women have equal chances as men, the reality often tells a different story. Girls worldwide face more household duties than boys and are more likely to miss out on school. In many countries, equal education for both genders is not guaranteed, and many girls are married off young, which can force them to end school early, lead to early pregnancy together with other health issues, and increase the chance of domestic violence.
On International Women’s Day, people participate in activities that raise awareness and call for gender equality. Wearing purple, a color of women’s rights history, is common. It is also a day when women are celebrated with gifts and social recognition in some places.
The journey towards full gender equality continues to face challenges. Yet, women’s groups across the globe remain strong and active, with younger women and teenagers adding their voices and energy to the cause. They are organizing, speaking out, and urging a shift in how we view and act towards each other regarding gender roles.
(Adapted from https://learnenglishteens.britishcouncil.org/)
What does the word “It” in paragraph 3 refer to?
Ông M nuôi được một đàn gà gồm 20 con, cuối năm ông dùng 5 con gà để biếu họ hàng thân cận, 5 con để phục vụ gia đình còn lại ông mang ra chợ bán. Trong trường hợp trên có bao nhiêu con gà mà ông đã thực hiện chức năng sản xuất?
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer.
Why are we always pointing to Instagram as the cause of mental illness in our teenagers? It’s frustrating that abusive relationships, and the trauma they cause, are rarely mentioned in discussions about the prevalence of mental health problems in young people. Research by Women’s Aid and Cosmopolitan has found that a third of teenage girls have been in an abusive relationship. And, if that isn’t shocking enough, when the remaining two-thirds were asked further questions, it emerged that 64% of them had, in fact, experienced abusive behaviour – they just didn’t realise it was abuse.
Domestic abuse is normally associated with women cowering on the floor, as a violent husband waits to strike, or mothers covering up their black eyes with concealer before the school run. On the same day that the domestic abuse bill received its second reading in parliament, Age UK called for action to tackle domestic abuse of over-60s, whose needs it says are often overlooked by the law, policy and practice. The needs of teenagers in the heady throes of first love who are in emotionally abusive relationships also need to be recognised.
Common themes of such relationships include (though are not limited to) excessive jealousy, repeated criticism and sexual coercion. If your boyfriend or girlfriend is checking your phone, constantly asking to know your whereabouts, getting upset when you spend time away, turning up unannounced to surprise you, these are all examples of coercive control. If they never apologise in an argument and make everything your fault, tell you what you can and can’t wear, undermine you and/or publicly humiliate you under the guise of a “joke”, these again are common instances of controlling behaviour. Ditto, if they have a Jekyll/Hyde personality, make you feel like you are walking on eggshells even when things are seemingly going well, and threaten to hurt themselves if you leave. When it comes to sexual coercion and rape, examples include making you feel pressured to perform sexual acts you’re uncomfortable with, such as sending nude photos, having sex before you’re ready, being pressured to re-enact extreme sex from porn films or being told you don’t love them if you say no.
Often the victim in an abusive relationship can never quite put their finger on one thing, but the overwhelming feeling is of a general unease, feeling unsafe, defective, wrong, scared and as if you are going crazy. It’s your “yourselfness” that’s being consistently undermined, controlled and attacked by the person who claims to love you.
What can be inferred from the second paragraph?
Choose A, B, C or D that has the CLOSEST meaning to the given pair of sentences in the question.
She dedicates a significant amount of her time to volunteering. Her goal is to empower underprivileged communities.
Chọn câu đúng. Tia laze được dùng
Read the following passage about the future of energy 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] As the world grapples with the finite nature of fossil fuel reserves and the detrimental impact of climate change, the future of energy undeniably lies in renewable sources. [II] Scientists and engineers are making substantial advancements in the development of technologies that more efficiently harness solar, wind, hydro, and geothermal energy. [III] Although the transition to these renewable sources presents significant challenges, it is also regarded as a pivotal step towards establishing a sustainable and resilient energy system. [IV]
One of the most promising advancements in renewable energy is the enhancement of solar panel efficiency. Progress in photovoltaic technology has led to the creation of panels that convert a higher proportion of sunlight into electricity. Likewise, wind turbines are becoming more and more efficient. They are capable of generating power even under low-wind conditions. These innovations are essential for making renewable energy more feasible and accessible to a broader population.
However, the transition to renewable energy is fraught with obstacles. The intermittent nature of sources like solar and wind necessitates reliable storage solutions to ensure a consistent power supply. Although battery technology has seen significant improvements, further advancements are imperative to meet growing demand. Moreover, new infrastructure for distributing renewable energy requires expansion and upgrading to accommodate these new power sources.
The economic impact of transitioning to renewable energy is another critical consideration. While the initial investment in renewable energy infrastructure can be substantial, the long-term benefits include reduced energy costs and job creation in the green energy sector. Governments and private enterprises are increasingly acknowledging the necessity of investing in renewable energy projects, which is crucial for fostering innovation and diminishing reliance on fossil fuels.
Ultimately, the future of energy hinges on our capacity to innovate and adapt. By continuing to invest in research and development, improving infrastructure, and addressing economic and technical challenges, we can transition towards a more sustainable and environmentally friendly energy system.
Which of the following best summarises the passage?