Kết quả của phép hội mệnh đề p và mệnh đề phủ định của p như thế nào?

Chọn ý đúng: Ở nước ta nơi có hoạt động giao thông đường sông phát triển nhất là?

Sau đây là một số ý kiến về khả năng của máy tính trong các lĩnh vực.

Mệnh đề nào dưới đây mô tả đúng về hàm tự định nghĩa không trả lại giá trị?

Khi động cơ xăng 4 kì làm việc, ở kì thải, xupap đóng hay mở?

The boy likes ________ games but hates ___________ his lessons.

Phan Bội Châu và các đồng chí của ông chủ trương thành lập Hội Duy tân nhằm mục đích gì?

Nội dung nào dưới đây không phản ánh đúng nguyên tắc của sử học?

Gọi s là diện tích tam giác ABC, để đưa giá trị của s ra màn hình ta viết:

Đồng vị phóng xạ (⁶⁰Co) phát ra tia γ có khả năng đâm xuyên mạnh, dùng điều trị các khối u sâu trong cơ thể. Cobalt có ba đồng vị $^{59}_{27}Co$ (chiếm 98%), $^{58}_{27}Co$ và $^{60}_{27}Co$, nguyên tử khối trung bình là 58,982. Xác định hàm lượng phần trăm của đồng vị phóng xạ ⁶⁰Co.

Đơn vị cơ bản trong hệ SI của gia tốc là

Trong các mệnh đề dưới đây mệnh đề đúng là?

Read the following passage about urbanisation and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

URBANISATION: A GROWING PHENOMENON

     Urbanisation is the process through which cities grow, and higher populations begin to inhabit urban areas. This phenomenon has accelerated significantly over the past few decades due to various factors. One of the primary drivers is the search for better employment opportunities. In rural areas, job prospects are often limited to agriculture and small-scale industries, which might not provide sufficient income. Consequently, people migrate to cities seeking better livelihoods and living standards.

     Additionally, urban areas offer more advanced educational facilities and healthcare services compared to rural regions. Many families move to cities to provide their children with higher-quality education and greater future opportunities. Access to hospitals and specialized medical services also attracts people to urban centers, especially in countries where rural healthcare is underdeveloped.

     However, rapid urbanisation brings about several challenges. Overcrowding in cities can lead to inadequate housing, strained infrastructure, and increased pollution. The expansion of urban areas often results in the loss of green spaces and agricultural land, impacting food production and the environment. Governments and city planners must address these issues to ensure sustainable urban growth.

     Despite these challenges, urbanisation has several positive aspects. Cities are often cultural melting pots, where diverse groups of people interact, leading to vibrant communities and innovation. The concentration of resources and talents in urban areas can drive economic growth and technological advancements.

In which paragraph does the writer discuss the benefits of urbanisation?

Tình trạng chính trị ở nước Nga sau thắng lợi của cách mạng tháng Hai (1917) là gì?

Từ năm 1960 đến năm 1973, kinh tế Nhật Bản có biểu hiện nào sau đây? 

Việc hình thành các chuỗi đô thị ven biển, đô thị hải đảo có ý nghĩa

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions: studious century similar semester

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 can be the best title of the passage? 

Các chúa Nguyễn ở Đảng Trong đã thực hiện chính sách gì để mở rộng ruộng đồng?

Tìm tất cả các giá trị của m để phương trình sau có nghiệm \(\cos 2x=\frac{m}{2}.\)