Cho cấp số cộng \(\left(u_{n}\right)\) thỏa \(\left\{\begin{array}{c}u_{2}-u_{3}+u_{5}=10 \\ u_{4}+u_{6}=26\end{array}\right.\).

Tính \(S=u_{1}+u_{4}+u_{7}+\ldots+u_{2020}\).

Liên kết hydrogen ảnh hưởng tới tính chất của nước như

Vi sinh vật quang tự dưỡng cần nguồn năng lượng và nguồn cacbon chủ yếu từ đâu?

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 22.

          The philosopher St. Augustine famously stated, "The world is a book, and those who do not travel read only a page." This notion aligns with the value of study-abroad programs, (18)_______ diverse cultures, languages, and perspectives. These programs are not merely about academic learning but are transformative journeys that often leave a profound impact on participants. Students describe these experiences as "rewarding" and even "life-changing," (19)________. Such programs not only enrich students academically but also prepare them to navigate a globalized world with empathy and understanding.

      A significant advantage of studying abroad lies in its ability to enhance experiential learning. Unlike traditional classroom instruction, firsthand encounters—such as observing art in its original context or engaging with local communities—can deepen one's understanding of a subject. As one student observed after viewing Michelangelo's David, (20)_________. Such moments sharpen one's senses, cultivate a sensitivity to beauty and pain, and foster a deeper awareness of the interconnectedness of human experiences.

     Moreover, studying abroad nurtures self-reflection, an essential aspect of personal growth. By documenting their experiences, students can analyze their values and beliefs (21)________. This reflective process not only enhances their capacity to adapt but also helps them better understand themselves and their aspirations. As educators recognize these multifaceted benefits, efforts continue to expand access to study-abroad opportunities, ensuring (22)________.

Ô tô dùng để:

Bộ phận nào của phanh có chức năng dừng, giữ xe trên đường trong thời gian dài?

Số khối (A) của một nguyên tử bằng

Hiến pháp năm 2013 khẳng định lĩnh vực nào giữ vai trò then chốt trong sự nghiệp phát triển kinh tế - xã hội của đất nước?

Kí hiệu cây có tán là:

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

Read 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. 

WinMart’s 10th Anniversary Celebration!

Join us at WinMart as we celebrate our 10th birthday with incredible deals just for you! (7)______your loyal support over the past decade, we’re thrilled to announce exclusive offers, discounts, and prizes across every department. From fresh groceries and home essentials to the latest tech(8)_____, we have everything you need at unbeatable prices.

Here's what you can enjoy:

• Up to 50% off on over 1,000 items, including fresh (9)___, electronics, and personal care products.

• Special "Buy One, Get Another at 10%" deals on selected products.

• The chance to win exciting gadgets, appliances, and gift vouchers in our lucky draw.

Don’t miss our interactive events, where customers can enjoy a large (10)______of free samples, fun games, and live demonstrations. Be sure to (11)______for our rewards program for additional discounts and collect points on every purchase.

Celebrate (12)______fantastic year with us at WinMart—visit any store or shop online to grab these limited-time deals!

Read the following passage about green living 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

          Green living refers to a lifestyle that promotes sustainability and environmental consciousness. This way of life encourages individuals to make choices that reduce their carbon footprint and conserve natural resources. Practices such as recycling, using renewable energy sources, and reducing waste are fundamental aspects of green living. By adopting these practices, individuals can contribute to the preservation of the environment and promote a healthier planet for future generations.

          One significant component of green living is the use of renewable energy sources. Solar, wind, and hydroelectric power are examples of renewable energy that can replace fossil fuels. Using renewable energy reduces greenhouse gas emissions and dependence on non-renewable resources. Additionally, renewable energy sources are often more sustainable and have less impact on the environment.

          Another important aspect of green living is sustainable consumption. This involves choosing products that are environmentally friendly and responsibly sourced. For example, buying locally produced food reduces the carbon footprint associated with transportation. Moreover, opting for products made from recycled materials helps conserve resources and reduce waste.

          Green living also emphasizes the importance of conserving water and energy. Simple actions such as turning off lights when not in use, fixing leaks, and using energy-efficient appliances can significantly reduce energy and water consumption. These practices not only benefit the environment but also save money on utility bills.

          Education and awareness play a crucial role in promoting green living. By educating individuals about the benefits of sustainable practices and how to implement them, communities can foster a culture of environmental responsibility. Awareness campaigns, workshops, and educational programs are effective ways to encourage people to adopt green living practices.

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

Read the passage carefully

1. Do you find yourself yawning all day at school? You probably need more sleep. However, it is not just how much sleep you get that is important. What you do before bedtime also has a huge effect on how you feel the next day. If you spend time chatting to someone on social media, or reading a book on your e- reader, you are not alone.

2. All devices' screens give out a large amount of blue light, which affects the body's production of the sleep hormone, melatonin, which can change your sleep patterns. So it is not just getting to sleep that becomes hard, but the quality of your sleep also suffers. The result is that you can wake up several times during the night, and have difficulty getting up in the morning.

3. Sleep is food for the brain, so not sleeping well can be a severe problem for anyone, especially for teenagers, because their brains are still developing. When you do not sleep well, it can be difficult to concentrate at school, which makes it harder to learn and get good grades. It can also affect your mood, making you feel sad or anxious. 

4. So, it is clear you should not use your phone before you go to sleep. Why not leave it in another room? Nothing on social media is so important that it cannot wait a few hours! You should rediscover paper books and enjoy feeling tired and sleepy before bedtime rather than wondering why your best friend has not liked your photo! How will you wake up? You do not have to use the alarm on your phone. Go and buy yourself an old-fashioned alarm clock! The negative effects that screen time is having on sleep have been in the news a lot recently, so manufacturers of smartphones and tablets have added a feature to the mobile devices that can help reduce these. Most new phones have a night-time setting that changes the colour of the screen so that it gives out less blue light. If you really cannot avoid going onto social media at bedtime, think about turning on this setting on your phone.

(Adapted from Prepare)

Which of the following is NOT TRUE according to the passage? 

Kết quả của phép cộng nhị phân 1011 + 101 là?

Khi soạn thảo, ban hành hay sửa đổi, bổ sung Hiến pháp phải được tuân theo:

Với một phân tử mARN có đoạn trình tự: 5’… AUXXGAAUGX….3’. Mạch bổ sung trên gen tổng hợp mARN này sẽ có đoạn trình tự tương ứng như thế nào?

Mục đích hoạt động là tạo ra lợi nhuận thông qua mua bán, sản xuất, kinh doanh hàng hoá/dịch vụ,...là đang nói đến đặc điểm nào của doanh nghiệp?

Hệ thống truyền lực nào sau đây phân loại theo cách truyền và biến đổi mô men?

Trong thí nghiệm tán xạ alpha của Rutherford, chùm hạt alpha được bắn về phía hạt nhân của nguyên tử vàng. Trong các quỹ đạo như hình vẽ, hạt alpha không thể chuyển động theo quỹ đạo nào?