Cá mập thụ tinh trong, phôi phát triển trong buồng trứng. Phôi nở trước ăn trứng chưa nở hoặc phôi nở sau nên mỗi lứa cá mập chỉ đẻ ít con. Đây là ví vụ về 

Đâu là hình ảnh giá thể là vỏ cây thông?

Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

The explosion in mobile phone use around the world has made some health professionals worrieSome doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

Which of the following does the author probably support?

Đọc thông tin sau và trả lời câu hỏi:

Thông tin: Trong cuộc thi sáng tạo Khoa học kĩ thuật dành cho thanh thiếu niên tỉnh C. Hai bạn M và N đã đạt giải nhất nhờ ý tưởng sáng tạo sản xuất khẩu trang than hoạt tính từ bã mía. Ban giám khảo đánh giá đây là ý tưởng thiết thực, có tính ứng dụng cao, góp phần bảo vệ môi trường. Một doanh nghiệp đã nhận bảo trợ tài chính cho hai bạn tiếp tục phát triển ý tưởng nghiên cứu.

Câu hỏi: Thông tin trên thể hiện nội dung cơ bản của Hiến pháp nước CHXHCN Việt Nam năm 2013 về mặt gì?

Vecto cường độ điện trường \(\vec{E}\) tại một điểm trong điện trường luôn

Read the following passage about home schooling in the UK 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.

Full-time education in the UK is compulsory from the age of five to sixteen, but this doesn’t have to be in a school. Around 50,000 children are educated at home. This is called ‘homeschooling’.

 Parents take their children out of school for different reasons, like illness and the need for special care, or because the distance to the nearest school may be too far. Some children are simply unhappy at school. Whatever the reason, they’re allowed to study at home, although inspectors regularly check how they are getting on.

 Hayley and Jenny haven’t been to school for two years but they haven’t neglected their studies. Their mother worked out strict timetables for them, with hourly lessons for each day. She’s responsible for teaching them Maths, English, History and French. Their father teaches them Science and Geography. They study all the other school subjects online. ‘We have lessons with Dad in the evenings and at weekends,’ explains Hayley.

 The family’s home is in a remote part of Wales. ‘The girls were fine at school but they spent so much time getting to school, they were too tired to learn, says their mother, Julia”. ‘We had a family conference and in the end we decided to try homeschooling. So far, it’s been a big success, but the girls know that if they want to go back to school at any time, we’ll let them. We follow the normal school program of lessons, and they will take all the normal school exams.’

 There are disadvantages too, of course. ‘Social isolation is something I worry about,’ says Julia. They both seem happy and well-adjusted, but they haven’t really got friends who live locally. But in the summer holidays they go away on trips to summer camps, where they have no trouble mixing with people and making friends.’

In which paragraph does the writer discuss the challeges associated with home scholling?

Mark the letter A, B, C or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Hi Alex,

a. Thanks to your guidance, I feel much more confident about presenting the project now, and I’m really proud of what we were able to accomplish together.

b. I really hope we’ll have the opportunity to collaborate again on another project in the near future, as I found working with you to be both inspiring and highly productive.

c. Please let me know if you have availability for any upcoming collaborations - I would be delighted to work with you again.

d. I wanted to take a moment to sincerely thank you for all the invaluable help and support you provided with the project last week.

e. Your thoughtful suggestions and detailed feedback truly made a significant difference, and I believe they played a key role in improving the overall quality and success of the final outcome.

Best,

Catherine

CHỦ ĐỀ: VẤN ĐỀ BẢN QUYỀN TRÊN MÔI TRƯỜNG SỐ

(Tham khảo bài văn của chủ đề trong đường link dưới đây ở trang 21)

https://tvsthpt.dlib.vn/app/doc-sach-ebook/d0f7e16b522f

Và trả lời câu hỏi sau:

Theo thiếu tá Lê Hồng Giang, nhận định nào sau đây về hoạt động né tránh phát hiện và xử lý xâm phạm bản quyền là chính xác? Chọn hai đáp án đúng. 

Tăng trưởng kinh tế là sự gia tăng của GDP hoặc GNP hoặc thu nhập bình quân đầu người trong một thời gian nhất định. Tăng trưởng kinh tế thể hiện sự thay đổi về lượng của nền kinh tế. Tuy vậy, ở một số quốc gia, mức độ bất bình đẳng kinh tế tương đối cao nên mặc dù thu nhập bình quân đầu người cao nhưng nhiều người dân vẫn sống trong tình trạng nghèo khổ. Phát triển kinh tế mang nội hàm rộng hơn tăng trưởng kinh tế. Phát triển kinh tế bao gồm tăng trưởng kinh tế cùng với những thay đổi về chất của nền kinh tế như phúc lợi xã hội, tuổi thọ… và những thay đổi về cơ cấu kinh tế như giảm tỉ trọng của khu vực sơ khai, tăng tỉ trọng của khu vực chế tạo và dịch vụ.

Tăng trưởng kinh tế thường được đo lường bằng chỉ số nào sau đây?

Thông tin của thị trường mang lại người mua điều gì?

Các trung tâm du lịch có ý nghĩa đối với quốc gia là

Giá trị $x$ để ba số $2; \, x+1; \, 4$ theo thứ tự lập thành một cấp số cộng là

Chúng ta cần làm gì đối với những hành vi cạnh tranh không lành mạnh?

Tầng lớp tư sản dân tộc ra đời xuất phát từ

Hình bên là hình chiếu trục đo vuông góc đều của một vật thể đơn giản. Theo hướng chiếu từ trước, hình chiếu vuông góc của vật thể là

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.

During the 1960s and '70s, industrialised countries suffered a(n) ______(1), and violent crimes such as muggings increased at an alarming rate. What is more, it was expected to ______(2) worse. Only it didn't. Instead, it got much, much better. In the 1990s, crime started to fall dramatically, and today it is down by almost 50% across the industrialised world and continues to fall. Triumphant politicians will assert that their policies have cut crime. Actually______(3) of the country's policies, the trend does coincide ______(4) the use and subsequent prohibition of tetraethyl lead in petrol, ______(5) for years as a cause of aggressive behaviour. Therefore, countries that still use leaded petrol are being urged to stop ______(6) it to help improve health and crime prevention.