A = \(\frac{1}{2\times3}\) + \(\frac{1}{3\times4}\) + \(\frac{1}{4\times5}\) + \(\frac{1}{5\times6}\)

A = \(\frac12-\frac13\) + \(\frac13\) - \(\frac14+\frac15-\frac16\)

A = \(\frac12-\frac16\)

A = \(\frac36-\frac16\)

A = \(\frac13\)

\(\frac{1}{2\times3}+\frac{1}{3\times4}+\frac{1}{4\times5}+\frac{1}{5\times6}\)

=\(\frac12-\frac13+\frac13-\frac14+\frac14-\frac15+\frac15-\frac16\)

=\(\frac12-\frac16=\frac26=\frac13\)

a

The Scroll and the Soul: Causes and Effects of Teen Social Media Addiction

The ubiquitous presence of smartphones has woven social media into the fabric of teenage life. While offering connection and information, excessive engagement can lead to addiction, a growing concern with significant causes and detrimental effects. This essay will explore why teenagers become hooked on social media and the resulting consequences on their well-being.

One primary cause is the inherent design of social media platforms. Developers employ algorithms that constantly refresh content, offering a stream of notifications, likes, and comments. This creates a reward system, triggering dopamine release and fostering a compulsive need to check for updates. The fear of missing out (FOMO), fueled by curated online portrayals of others' seemingly perfect lives, further compels teens to stay connected, lest they feel excluded. Peer pressure and the desire for online validation also play a crucial role, driving teenagers to seek acceptance and status through likes and followers.

The effects of this addiction are multifaceted. Academically, excessive screen time often leads to decreased concentration, lower grades, and procrastination. Socially, reliance on virtual interactions can hinder the development of crucial face-to-face communication skills and weaken real-life relationships. Furthermore, the constant exposure to idealized images can fuel body image issues, anxiety, and depression as teenagers compare their own realities to the often-filtered online world. Sleep deprivation, stemming from late-night scrolling, exacerbates these negative impacts, affecting both physical and mental health.

In conclusion, the addictive nature of social media among teenagers is driven by manipulative platform design and the powerful desire for social acceptance. This dependence, in turn, cultivates academic struggles, social isolation, and a decline in mental well-being, highlighting the urgent need for awareness and strategies to foster healthier online habits.

Câu mệnh lệnh gián tiếp là câu dùng để thuật lại một mệnh lệnh, yêu cầu, lời khuyên, lời nhắc nhở… mà người khác đã nói, không nói lại y nguyên như câu trực tiếp, mà dùng cách gián tiếp để truyền đạt lại.

🔹 1. Câu mệnh lệnh trực tiếp là gì?

Là câu dùng để ra lệnh, yêu cầu ai đó làm việc gì, thường dùng động từ nguyên mẫu, ví dụ:

• "Close the door!" (Đóng cửa lại!)
• "Don’t talk!" (Đừng nói chuyện!)

🔹 2. Câu mệnh lệnh gián tiếp là gì?

Là cách thuật lại mệnh lệnh đó, thường dùng cấu trúc với “tell,” “ask,” “advise,” “order,”… kèm theo to V hoặc not to V.

🔹 3. Cấu trúc câu mệnh lệnh gián tiếp:

• S + told / asked / ordered + O + to V (nguyên mẫu)
  👉 để yêu cầu làm gì
• S + told / asked / warned + O + not to V
  👉 để yêu cầu không làm gì

🔸 Ví dụ:

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Dịch đơn giản là như vậy nhé

a

a

My name is Duy Anh

My name's Phuc Nguyen

Gợi ý đi

ngủ đi muộn rồi =(

40

1

bạn ghi gì vậy??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

ồ ,hóa ra anh/chị lớp 7