Ngành công nghiệp mũi nhọn của Cộng hòa Nam Phi là gì?

Nhóm cây trồng nào sau đây phân loại theo chu kì sống ?

Chăn nuôi hiện nay tồn tại mấy kiểu chuồng nuôi?

Phát biểu nào dưới đây sai khi nói về python?

Tác dụng của việc phân loại dữ liệu là gì?

Các quá trình ngoại lực bao gồm có những quá trình nào?

Ví dụ nào sau đây không phải đặc điểm thích nghi ở sinh vật?

Yếu tố nào sau đây không ảnh hưởng đến lượng cung hàng hóa, dịch vụ?

Cho hàm số \(y=\frac{1}{3}{{x}^{3}}-\frac{1}{2}{{x}^{2}}-12x-1\). Mệnh đề nào sau đây đúng?

"Công dân trực tiếp góp ý về tình trạng ô nhiễm môi trường ở địa phương với đại biểu Quốc hội trong dịp đại biểu tiếp xúc cử tri" là thực hiện quyền nào sau đây?

Cho các phát biểu sau đây về kì trung gian:

1. Có 3 pha: G1, S và G2.

2. Ở pha G1, tế bào tổng hợp các chất cần cho sự sinh trưởng

3. Ở pha G2, ADN nhân đôi dẫn tới sự phân đôi NST đơn thành NST kép.

4. Ở pha S, tế bào tổng hợp những gì còn lại cần cho phân bào.

Số phát biểu đúng là:

Khi quyết định các vấn đề quan trọng của địa phương Uỷ ban nhân dân hoạt động theo nguyên tắc nào?

Tìm phát biểu sai về điện trường?

Read the following passage about the impact of social media on mental health and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions

[I] In recent years, social media platforms have become a central part of daily life, offering users countless ways to connect, share, and communicate. [II] While these platforms offer many advantages, experts have noted rising concerns about their effects on mental health, particularly among young people (Smith & Anderson, 2018). [III] Studies reveal that excessive social media use can contribute to feelings of anxiety, depression, and loneliness, despite its intention to promote connection and social interaction (Twenge & Campbell, 2019). [IV]

A primary reason for these mental health concerns is the tendency for social media users to compare themselves to others. Platforms like Instagram and Facebook often highlight idealized lifestyles, leading users to feel inadequate about their own lives. Additionally, the constant notifications and messages contribute to a "fear of missing out," or FOMO, which keeps individuals in a cycle of checking their phones, often reducing the quality of sleep and overall well-being.

There is also a growing body of research suggesting a link between social media use and decreased attention spans. When users frequently switch between apps and notifications, their ability to focus for extended periods may diminish (Rosen, 2019). This shift in attention can interfere with productivity, especially in academic and professional settings, where sustained focus is essential.

Addressing these challenges requires a multi-faceted approach. Some mental health professionals suggest limiting screen time and setting boundaries, such as "device-free" hours before bedtime. Others recommend engaging in offline activities, like reading or exercising, to reduce dependence on social media and build healthier habits. According to psychologists, such strategies can bu mental resilience and allow for more meaningful, balanced relationships (Robinson & Smith, 2020).

Which of the following best summarizes paragraph 3?

Read the following passage 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.

SCREEN TIME: MENTAL HEALTH MENACE OR SCAPEGOAT?

    "Have smartphones destroyed a generation?" Jean Twenge - a psychology professor at San Diego State University - asked in her controversial book, iGen. In the book, she argues that those born after 1995 are facing "a mental-health crisis", and she believes it can be linked to growing up with their noses pressed against a screen. Her newest study provides more support for that connection, showing that teens who spent more than an hour or two a day interacting with their gadgets were less happy on average than those who had more face time with others.

    Twenge's conclusions have come up against criticism in the past. Some have accused her work of oversimplifying or overlooking data that may tell a slightly different story. Twenge recognises that her study suggests only a link between screen use and psychological well-being. A possible explanation is that kids are running to their screens to escape from the things in life that are making them unhappy. However, the surveys can't say whether screen time directly changes teens' mental health, the research states.

    Philanthropist Melinda Gates, whose three children were also born after 1995, wrote in The Washington Post, "phones and apps aren't good or bad by themselves, but for adolescents who don't yet have the emotional tools to overcome life's problems, they can aggravate the difficulties of growing up."

    At the same time, she said, kids are learning on their devices and connecting in novel ways. Other studies have explored the connection between social media and isolation and how "likes" activate the brain's reward centre. Some analyses have found that moderate use of these technologies is not harmful in itself and can even improve children's social skills and build emotional strength.

Which of the following is NOT true, according to the passage?

Hiện tượng nào là hệ quả chuyển động tự quay quanh trục của Trái Đất?

Điểm khác nhau giữa 2 qui luật phân li độc lập và tương tác gen là gì?

Cho x=00111, y=10011

Kết quả của phép x + y là:

Chọn phát biểu sai. Lực ma sát nghỉ

Đối với một quốc gia, ngân sách nhà nước là quỹ tiền tệ tập trung với quy mô như thế nào?

Read the following asvertisment and mark the leeter A, B, C and D on your answer sheer to indicate the option that best fit each of the numbered blanks from 1 to 6.

TRAVELLING IN STYLE

"Will my holiday be relaxing or will it be (1) _______? Am I going to enjoy the company of others or will I feel alone?" These are some of the questions many people ask before going on a (2) _______. But now, a travel agency has come up with a unique idea (3) _______ 'Holiday Buddies'. You can now select people to share your vacation with based on their travel interests. When booking a trip, you can share your preferences (4) _______ the entire group. Then, you’ll be matched with others who have similar interests. If you're looking to (5) _______ lifelong friendships, choose a group of people who enjoy exploring new places. And if you're interested in (6) _______ by the beach and enjoying good food, there’s a group for that too!