Phương pháp điều chế mã xung được thực hiện qua mấy bước?

Trên ô tô con, vành được chế tạo như thế nào?

Một quả bóng có khối lượng 250 g đang nằm yên trên mặt đất thì bị một cầu thủ đá bằng một lực 500 N. Bỏ qua mọi ma sát. Gia tốc mà quả bóng thu được là:

Cho hai tập hợp $A=\left(-3;0 \right)\cup \left[ 2;+\infty \right)$ và $B=\left(0;2 \right]$. Tập hợp $A \cap B$ bằng

Trộn 200 mL dung dịch HCl có \(\mathrm{pH}=2\) với 300 mL dung dịch NaOH có \(\mathrm{pH}=12\). pH của dung dịch thu được sau khi trộn là

Read the passage carefully. Choose an option (A, B, C or D) that best answers each question from 23 to 30.

1. How do children learn about wildlife? And is what they learn the sort of thing they should be learning? It is my belief that children should not just be acquiring knowledge of animals but also developing attitudes and feelings towards them based on exposure to the real lives of animals in their natural habitats. But is this happening?

2. Some research in this area indicates that it is not. Learning about animals in school is often completely disconnected from the real lives of real animals, with the result that children often end up with little or no understanding or lasting knowledge of them. They learn factual information about animals, aimed at enabling them to identify them and have various abstract ideas about them, but that is the extent of their learning. Children's storybooks tend to personify animals as characters rather than teach about them.

3. For direct contact with wild and international animals, the only opportunity most children have is visiting a zoo. The educational benefit of this for children is often given as the main reason for doing it but research has shown that zoo visits seldom add to children's knowledge of animals – the animals are simply like exhibits in a museum that the children look at without engaging with them as living creatures. Children who belong to wildlife or environmental organizations or who watch wildlife TV programmes, however, show significantly higher knowledge than any other group of children studied in research. The studies show that if children learn about animals in their natural habitats, particularly through wildlife-based activities, they know more about them than they do as a result of visiting zoos or learning about them in the classroom.

4. Research has also been done into the attitudes of children towards animals. It shows that in general terms, children form strong attachments to individual animals, usually their pets, but do not have strong feelings for animals in general. This attitude is the norm regardless of the amount or kind of learning about animals they have at school. However, those children who watch television wildlife programs show an interest in and affection for wildlife in its natural environment, and their regard for animals in general is higher.

What can be inferred from paragraph 4 about children's attitudes to animals?

Xác định một từ/ cụm từ SAI về ngữ pháp/ hoặc ngữ nghĩa/ logic/ phong cách.

Theo nhiều chuyên gia, có ba nguyên nhân chính gây ra sạc lở đất ở Việt Nam cũng như nhiều quốc gia khác trên thế giới, bao gồm: đặc tính địa chất của đất, hình thái của đất và hoạt động của con người tác động lên đất.

Muốn nối danh sách gồm các từ thành một xâu ta dùng lệnh nào?

Người ta đánh giá sự phát triển của máy tính điện tử số qua các giai đoạn dựa vào tiêu chí nào trong các tiêu chí sau đây?

Phản ứng hoá học nào dưới đây là phản ứng oxi hoá-khử?

Nhận định nào sau đây không phải là dấu hiệu nhận diện 1 ý tưởng kinh doanh tốt?

Đọc đoạn tư liệu sau đây:

“Thời phong kiến, Vua sai coi việc chép sử, cho nên dẫu thế nào sự chép sử cũng không được tự do, thường có ý thiên vị về nhà vua, thành ra trong sử chỉ cần chép những chuyện quan hệ đến nhà vua, hơn là những quan hệ đến sự tiến hóa của nhân dân trong nước”.

(Trần Trọng Kim, Việt Nam sử lược, NXB Văn học,
Hà Nội, 2022, tr.7-8)

Các cấp tổ chức của thế giới sống không bao gồm thành phần nào dưới đây?

Sau khi tốt nghiệp THPT, Y đã theo bạn bè rủ rê tham gia vào tệ nạn xã hội. Một lần, khi đang thực hiện vận chuyển, buôn bán ma túy thì bị bắt. Y đã không:

Đặc điểm nào của vị trí địa lí có vai trò quan trọng nhất đối với sự phát triển kinh tế - xã hội của Hoa Kì?

Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.

Nick: “I’m really tireI’m taking next week off. ”

Michael: “ ________”

Em hãy cho biết những nhận định sau đây là không đúng khi bàn về chức năng của giá cả thị trường? 

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 the following questions from 13 to 17.

a. Lifelong learning, however, is not merely about acquiring qualifications but also about nurturing curiosity and adaptability.

b. It is an ongoing process that allows individuals to develop professionally and personally throughout their lives.

c. As technology continues to evolve rapidly, the ability to learn and relearn has become a critical skill in the modern world.

d. From formal education to self-directed learning, it provides countless opportunities for growth and improvement.

e. In conclusion, embracing lifelong learning enables us to remain relevant, adaptable, and open to new challenges in an ever-changing world.

Read the passage carefully

1. No matter who we are or where we are from, we only have 24 hours each day to get things done. Some people seem to make the most of their time, using it to achieve their goals and dreams. Others feel that life is passing them by and they aren’t accomplishing anything. If you are in the latter group, it is not too late to turn things around. By implementing a few simple hacks, you can start getting better results very quickly.

2. If you want to become more productive, it pays to learn about the Pareto principle (which is also known as the 80-20 rule). It states that for most tasks, 80 percent of the results we get come from 20 percent of the work we do. For example. 80 percent of the company sales usually come from 20 percent of customers. Therefore, the trick is to focus your efforts on the key 20 percent of actions that truly matter to greatly improve your results.

3. In some cases, people may be busy from morning to night but still seem to get nothing done. In this situation, the problem might be that clear goals haven’t been set. To fix this, set some time aside to list the things you want to achieve in life. Then, select the top three or four that you want to focus on for the next year. Look at your goals every night before bedtime and ask yourself what are the next actions to accomplish each day. Then, promise yourself that you will finish these tasks no matter how busy you get. If possible try completing the tasks first thing in the morning so you are assured of success.

4. Another common mistake regarding productivity is not considering our energy levels. If we try to work around the clock, we will eventually get tired and quit. Everyone needs time to sleep, eat, socialize with friends, and unwind from the stress of the day. To make sure you don’t burn out, be sure to schedule some time for breaks and fun activities into your schedule every day. Finally, no matter how difficult your goals may seem, remember the old saying that “a journey of a thousand miles begins with a single step”.

What should we do in order to achieve our goals?

Cho biết: Bộ phận nào không thuộc hệ thống nội màng?