Este X chứa vòng benzen có công thức phân từ là C₈H₈O₂. Số công thức cấu tạo của X là 

Tại một điểm xác định trong điện trường tĩnh, nếu độ lớn của điện tích thử tăng 3 lần thì độ lớn cường độ điện trường

When hearing the news, Tom tried his best to keep a _______ on his surprise.

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 27 to 31.

Speech is one of the most important ways of communicating. It consists of far more than just making noises. To talk and also (27) ___________ by other people, we have to speak a language, that is, we have to use combinations of sounds that everyone agrees to stand for a particular object or idea. Communication would be impossible (28) _________________. Learning a language properly is very important. The basic vocabulary of English is not very large, and not only about 2,000 words are needed to speak it quite well. But (29) ________________, the more precise you can be about their exact meaning. Words are the main thing we use in communicating what we want to say. (30) ________________. (31) _______________ of voice can express many emotions and show whether we are pleased or angry, for instance.

Đơn vị tổ chức cơ sở của mọi sinh vật là gì?

Cơ cấu tổ chức của Hội đồng nhân dân gồm những thành phần nào?

Cho bảng số liệu sau:

GIÁ TRỊ XUẤT NHẬP KHẨU HÀNG HÓA CỦA LIÊN MINH CHÂU ÂU GIAI ĐOẠN 2010 - 2022

(Đơn vị: tỷ USD)

(Nguồn: Trang Thống kê Tổ chức Thương mại Thế giới)

Nhận định nào dưới đây là đúng/sai?

Read the following advertisement 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.

Heirloom Moments™: Family Traditions Reimagined for the Quantum Age

The revolutionary technology transforms how families (1)_________ across generations. Our (2)_________ creates unforgettable experiences for everyone.

Families (3)_________ our service report stronger connections with distant relatives. We send photos (4)_________ grandparents through our secure platform.

When it comes to preserving memories, Heirloom Moments™ (5)_________ the cake! We encourage you to start your family's digital legacy today.

Visit our website or call us today (6)_________ more about how Heirloom Moments™ can help your family stay connected across time and space!

Đặc điểm nào có ở giảm phân mà không có ở nguyên phân?

Cho biết phần mềm nguồn mở là gì?

Bước đi quan trọng để có căn cứ xác định các định mức cho các khoản chi khi phân bổ tài chính, đồng thời kiểm soát được việc thực hiện kế hoạch tài chính cá nhân theo đúng mục tiêu đã đề ra là:

“Ngoài cật có một manh áo vải, nào đợi mang bao tấu, bầu ngòi; trong tay cầm một ngọn tầm vông, chị nài sắm dao tu, nón gõ.

Hỏa mai đánh bằng rơm con cúi, cũng đốt xong nhà dạy đạo kia; gươm đeo dùng bằng lưỡi dao phay, cũng chém rớt đầu quan hai nọ.

Chi nhọc quan quản gióng trống kì trống giục, đạp rào lướt tới, coi giặc cũng như không, nào sợ thằng Tây bắn đạn nhỏ đạn to, xô cửa xông vào, liều mình như chẳng có.

Kẻ đâm ngang, người chém ngược, làm cho mã tà ma ní hồn kinh; bọn hè trước, lũ ó sau, trối kệ tàu sắt tàu đồng súng nổ.”

(Nguyễn Đình Chiểu, Văn tế nghĩa sĩ Cần Giuộc)

Thủ pháp nghệ thuật nổi bật nhất trong đoạn trích trên là

Kí hiệu cây có tán là:

Đâu là thành phần chủ yếu của dịch mạch gỗ?

Ngành nghề nào sau đây không có sự liên quan đến sinh học?

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.

Where in paragraph 1 does the following sentence best fit?

"Social media has transformed how individuals communicate and engage with each other."

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 18 to 23.

       Music brings many benefits to our lives, especially when we learn something new. Firstly, it makes learning more enjoyable. When we listen to music while studying, it can help us feel relaxed and happy. (18) _______. For example, if you are learning a new language, listening to songs in that language can help you understand and remember words better.

       Secondly, music helps us focus. (19) _______, our mind becomes less distracted. We can concentrate better on our tasks, whether it’s reading, writing, or solving problems. This is because music has a special way of grabbing our attention and (20) _______.

       Finally, music connects us with other cultures. Through music, we can learn about the traditions, feelings, and (21) _______. It’s like traveling to new places without leaving (22) _______. We can hear different instruments, rhythms, and voices that tell us about the rich diversity of our world.

       In summary, music is not just about entertainment. It helps us learn better, stay focused, and (23) _______. It’s a powerful tool that can make our learning journey more exciting and rewarding.

Loại đường nào dưới đây tham gia cấu tạo phân tử DNA?

Công thức tính điện năng tiêu thụ của một đoạn mạch là

Khi nhiệt độ môi trường khoảng 13^oC, thì sức sống của 3 loài sinh vật trên như thế nào?