Với mô hình động học phân tử, sự khác biệt về độ lớn của lực tương tác giữa các phân tử trong chất rắn, chất lỏng, chất khí dẫn đến sự

Liên minh Viễn thông Quốc tế viết tắt là gì?

Cho hình bình hành ABCD có \(AB = 8cm\), \(AD = 12cm\) , góc \(\angle ABC\) nhọn và diện tích tam giác ABC bằng \(27{\mkern 1mu} c{m^2}\) Khi đó \(\cos \left( {\overrightarrow {AB} ,\overrightarrow {BC} } \right)\) bằng 

Thiết bị nào dưới đây là thiết bị thông minh:

Loại thuốc thử nào được dùng để nhận biết sự có mặt của glucose trong tế bào?

Từ nào bị dùng SAI trong câu sau:

“Chị Quỳnh là một người phụ nữ tháo dát, khó khăn nào trong công việc cũng được chị giải quyết một cách nhanh gọn.”

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.

WELCOME TO HOI AN VILLAGES IN DA NANG, VIET NAM!

Hoi An villages ____(1)_______ in the province of Da Nang in Vietnam are famous for their ____(2)______ vegetable and herb gardens. They are also well-known for the coconut palms near the Thu Bon River and traditional crafts such as ______(3)________.

Here in Hoi An villages, you can spend the morning gardening _____(4)_______ the local farms. Other leisure activities include _____(5)_______ bicycles through the villages, travelling on basket boats and visiting craft villages.

We offer an ecotour to Hoi An villages, and tourists are encouraged _____(6)______ eco-friendly transport such as bicycles to avoid polluting the environment. You can also buy local products and beautiful crafts to help local businesses!

Call us at 0929292929 and book your tour today!

Vị trí địa lí nước ta đã tạo điều kiện thuận lợi nào cho nước ta?

Một chủng vi khuẩn Escherichia coli mang đột biến làm thay đổi trình tự nucleotide ở vùng vận hành (operator) của operon lac làm giảm ái lực với protein ức chế. Nhận định nào sau đây về sự phiên mã của các gene cấu trúc trong operon lac ở chủng vi khuẩn này là đúng?

Read the following passage about studying abroad 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 31 to 40.

Successful students often do the followings while studying. First, they have an overview before reading. Next, they look for important information and pay greater attention to it (which often needs jumping forward or backward to process information). They also relate important points to one another. Also, they activate and use their prior knowledge. When they realize that their understanding is not good, they do not wait to change strategies. Last, they can monitor understanding and take action to correct or “fix up” mistakes in comprehension.

Conversely, students with low academic achievement often demonstrate ineffective study skills. [I] They tend to assume a passive role in learning and rely on others (e.g., teachers, parents) to monitor their studying. [II] For example, low-achieving students often do not monitor their understanding of content; they may not be aware of the purpose of studying; and they show little evidence of looking back or employing “fix-up” strategies to fix understanding problems. [III] Students who struggle with learning new information seem to be unaware that they must extend effort beyond simply reading the content to understand and remember it. [IV] 

Children with learning disabilities do not plan and judge the quality of their studying. Their studying may be disorganized. Students with learning problems face challenges with personal organization as well. They often have difficulty keeping track of materials and assignments, following directions, and completing work on time. Unlike good studiers who employ a variety of study skills in a flexible yet purposeful manner, low-achieving students use a restricted range of study skills. They cannot explain why good study strategies are important for learning; and they tend to use the same, often ineffective study approach for all learning tasks, ignoring task content, structure or difficulty.

Where in paragraph 2 does the following sentence best fit? 

This lack of initiative often leads to poor comprehension and retention of information.

Việc muối chua rau quả là ứng dụng hoạt động của loại vi sinh vật nào sau đây?

Read the following passage about Wildlife Conservation in Africa 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 31 to 40.

Wildlife conservation in Africa is vital for preserving biodiversity and ensuring the survival of iconic species such as elephants, lions, and rhinos. [I] The continent is home to some of the world’s most diverse ecosystems, including savannahs, rainforests, and deserts. [II] Conservation efforts involve strategies like protecting habitats, combating poaching, and raising awareness about the importance of wildlife. [III] Despite challenges, success stories demonstrate the positive impact of these efforts. [IV]

One notable example comes from Kenya, where anti-poaching initiatives and community engagement have helped stabilize elephant populations in Amboseli National Park. Similarly, in South Africa, rhino conservation programs use advanced technologies like drones and GPS tracking to monitor and protect vulnerable animals. These efforts not only safeguard wildlife but also promote eco-tourism, which supports local economies.

However, wildlife conservation in Africa faces persistent threats. Habitat loss due to agricultural expansion and urbanization continues to endanger species. Climate change exacerbates these challenges, altering migration patterns and threatening ecosystems. Furthermore, poaching and the illegal wildlife trade remain significant concerns, driven by global demand for products such as ivory and rhino horn.

To overcome these challenges, conservationists emphasize the need for international collaboration and local community involvement. Initiatives like eco-tourism provide financial incentives for communities to protect wildlife. Governments, NGOs, and individuals must work together to ensure the survival of Africa’s unique species for future generations.

Where in paragraph 1 does the following sentence best fit?

"Africa’s wildlife holds both ecological and cultural significance."

Trong các ý sau, đâu không là đặc điểm của chăn nuôi bán công nghiệp?

Một điện tích điểm q = 5.10^-7 C đặt tại điểm M trong điện trường, chịu tác dụng của lực điện trường có độ lớn 6.10^-2 N. Cường độ điện trường tại M là

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions: mood flood spoon moon

Nội dung nào dưới đây không phải là đặc điểm văn bản quy phạm pháp luật?

Xét hình phẳng giới hạn bởi hai parabol \(y = x^2-c^2\) và \(y = c^2-x^2\). Tìm hằng số dương c sao cho diện tích hình phẳng đó bằng 10 (làm tròn kết quả đến hàng phần trăm).

Nhà nước Cộng hòa xã hội chủ nghĩa Việt Nam có bản chất gì sau đây?

Trong một máy tăng áp lí tưởng đang hoạt động ở chế độ không tải. So sánh đúng giữa suất điện động cảm ứng trong một vòng của cuộn sơ cấp e_s và suất điện động cảm ứng trong một vòng của cuộn thứ cấp e_t là

Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of thefollowing questions from 13 to 17.

a. Cơm tấm, a common choice for breakfast, is a rice dish served with pork ribs, fried egg and fish sauce.

b. In other words, the two specialties are popular enough to become the local pride for generations.

c. There are lots of delicious dishes in Ho Chi Minh City that fascinate lots of foreign tourists.

d. In addition, bánh mì is a unique kind of sandwich served with different ingredients like pork or fish.

e. Tourists can try the two specialties in many places in Ho Chi Minh City.

Có bao nhiêu loại amino acid không thể thay thế?