Sử dụng các kí hiệu đoạn, khoảng, nửa khoảng để viết tập hợp $A = \{ x \in \mathbb{R} \big| x < 2\}$.

Ý nào sau đây phản ánh đúng tính chất của cuộc Duy tân Minh Trị năm 1868 ở Nhật Bản?

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

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 24 to 28. 

Doing chores is good for children. Kids (24) _______ do housework develop important life skills that they will need for the rest of their lives. Doing the laundry, cleaning the house, and taking care of others are among the important skills students will need when they start their own families. These are the things that schools cannot fully teach, (25) _______ it’s important for children to learn them at home. Moreover, sharing housework helps young people learn to take (26) _______. They know that they have to try to finish their tasks even though they do not enjoy doing them. (27) _______ benefit of housework is that it helps develop children’s gratitude to their parents. When doing housework, they learn to appreciate all the hard work their parents do around the house for them. In addition, doing chores together helps (28) _______ family bonds, creating special moments between children and parents. All in all, doing housework can bring a lot of benefits to children.

(Adapted from Global Success)

Cầu Đu-me là tên gọi khác của cây cầu nào được thực dân Pháp xây dựng trong cuộc khai thác thuộc địa lần thứ nhất ở Đông Dương?

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 from 23 to 30.

SCREEN TIME: MENTAL HEALTH MENACE OR SCAPEGOAT?

    "Have smartphones destroyed a generation?" Jean Twenge - a psychology professor at San Diego State University - asked in her controversial book, iGen. In the book, she argues that those born after 1995 are facing "a mental-health crisis", and she believes it can be linked to growing up with their noses pressed against a screen. Her newest study provides more support for that connection, showing that teens who spent more than an hour or two a day interacting with their gadgets were less happy on average than those who had more face time with others.

    Twenge's conclusions have come up against criticism in the past. Some have accused her work of oversimplifying or overlooking data that may tell a slightly different story. Twenge recognises that her study suggests only a link between screen use and psychological well-being. A possible explanation is that kids are running to their screens to escape from the things in life that are making them unhappy. However, the surveys can't say whether screen time directly changes teens' mental health, the research states.

    Philanthropist Melinda Gates, whose three children were also born after 1995, wrote in The Washington Post, "phones and apps aren't good or bad by themselves, but for adolescents who don't yet have the emotional tools to overcome life's problems, they can aggravate the difficulties of growing up."

    At the same time, she said, kids are learning on their devices and connecting in novel ways. Other studies have explored the connection between social media and isolation and how "likes" activate the brain's reward centre. Some analyses have found that moderate use of these technologies is not harmful in itself and can even improve children's social skills and build emotional strength.

Which of the following best paraphrases the underlined sentence in paragraph 4?

Trong không gian với hệ tọa độ Oxyz, cho điểm \(A(3; 1;-2)\), đường thẳng \(d: \frac{x-2}{2}=\frac{y+1}{1}=\frac{z-1}{-1}\) và mặt phẳng \((P): 2 x-y+3 z-5=0\).

Tính côsin của góc tạo bởi đường thẳng \(d\) và mặt phẳng \((P)\).

Một trong những vai trò của du lịch đối với việc bảo tồn di tích lịch sử và di sản văn hóa là

Ngành du lịch có đặc điểm nào sau đây?

Trong Access, muốn tạo liên kết giữa hai bảng thì hai bảng đó phải có hai trường thỏa mãn điều kiện gì?

Xác định ý đúng: Đối với sự phát triển của xã hội loài người, môi trường tự nhiên là nhân tố?

Diện tích tam giác có độ dài ba cạnh lần lượt là \(5\), \(12\), \(13\) bằng

Miền hình phẳng (H) được giới hạn bởi \(\left\{ \begin{matrix} \begin{matrix} \begin{matrix} y+x>-1 \\ x-y>1 \\ \end{matrix} \\ x+2y<4 \\ \end{matrix} \\ 2x-3y<8 \\ \end{matrix} \right.\) là phần tô màu ở hình nào dưới đây?

Read the following passage about How Failures Led to Breakthroughs 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 23 to 30.

Many important discoveries happened because of mistakes and unexpected accidents. Alexander Fleming found penicillin when he left his laboratory messy before going on holiday. After vacation, he saw mold growing on his experiment plate. Fleming noticed this mold killed bacteria around it very effectively. This fortunate accident later saved millions of lives around the world. Scientists call finding valuable things by chance "serendipity," which happens often in research.

The Post-it Note began as a mistake that seemed useless at first. In 1968, Spencer Silver tried making a strong glue for 3M company but created a weak one instead that didn't stick permanently. Nobody knew what to do with this disappointing result for several years. Then his colleague Arthur Fry realized this "failure" could make perfect bookmarks that wouldn't damage pages when removed. This weak adhesive eventually became one of the most popular office products worldwide, changing how people work.

In cooking, many favorite foods came from kitchen errors and quick substitutions. Ruth Wakefield invented chocolate chip cookies when she ran out of baker's chocolate and used broken pieces of semi-sweet chocolate instead. She thought they would melt completely in the dough, but they kept their shape during baking. Potato chips were created when chef George Crum made extremely thin potatoes to annoy a customer who repeatedly complained about thick fries. Surprisingly, the customer loved them and ordered more!

These fascinating stories teach us that mistakes can lead to new opportunities and unexpected innovations. Thomas Edison said about his many failed light bulb attempts, "I haven't failed. I've just found 10,000 ways that don't work." This positive attitude shows we should see errors as valuable learning chances. Smart people don't fear making mistakes in their work; they fear missing opportunities to learn from them and discover something amazing.

Which of the following best paraphrases the underlined sentence in paragraph 4?

Chủ thể tiêu dùng có vai trò như thế nào đối với sự phát triển của sản xuất?

Xác định ý đúng: Môi trường tự nhiên bao gồm các thành phần là gì ?

Nhân tố nào ảnh hưởng đến sự phát triển và phân bố của ngành bưu chính viễn thông?

Mômen lực tác dụng lên một vật là đại lượng

Cho hàm số \(y=f\left( x \right)\) có bảng biến thiên như sau:

Bảng biến thiên:

Diện tích tam giác tạo bởi 3 điểm cực trị của đồ thị hàm số \(y=f\left( x \right)\) là: