Cho kí hiệu nguyên tử của nguyên tố chlorine là \[{}_{17}^{35}Cl\]. Nhận xét nào sau đây sai?

Cho mẫu số liệu điểm môn Toán của một nhóm học sinh như sau:

\begin{array}{c|c|c|c|c|} \text {Điểm} & {[6 ; 7)} & {[7 ; 8)} & {[8 ; 9)} & {[9 ; 10]} \\ \hline \text {Số học sinh} & 8 & 7 & 10 & 5  \end{array}

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

Chọn câu đúng trong các câu sau?

Cho hàm số \(y=f\left( x \right)\) liên tục trên \(\mathbb{R}\) và có đạo hàm thỏa mãn \(f'\left( x \right)=\left( 1-{{x}^{2}} \right)\left( x-5 \right)\). Hàm số \(y=3f\left( x+3 \right)-{{x}^{3}}+12x\) nghịch biến trên khoảng \(\left( a;+\infty \right)\) với \(a\) là số nguyên nhỏ nhất. Tìm \(a\).

Số tập con của tập hợp $A = \{x \in \mathbb{R} \, \big| \,3 ( x^2 + x ) ^ 2 -2x^2 -2x=0\}$ là

Số Parabol \((P):y = {x^2} - 6x + 9\) có số điểm chung với trục hoành là?

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 from 31 to 40.

[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 enhance mental resilience and allow for more meaningful, balanced relationships (Robinson & Smith, 2020).

Which of the following is TRUE according to the passage?

Nếu một vật có nhiệt độ 80 ^oC tiếp xúc với một vật có nhiệt độ 30 ^oC thì quá trình truyền nhiệt sẽ dừng lại khi nhiệt độ của hai vật

Read the following passage about Our Festival Traditions 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.

Katê Festival

Cultural diversity is a vital aspect of any society, and festivals of ethnic groups play an essential role in preserving the cultural identity of a community. Embracing cultural values through festivals is an important way of staying connected with one community as well as its history and traditions, and a well-known Katê Festival of the Chăm people in Vietnam is an example to prove so.

The Katê Festival, also known as Mbăng Katê, is the biggest yearly festival for the Chăm people in Vietnam. It is a special time of year when they honour important figures in their history and the dead in their families. The Kate Festival takes place on the first day of the seventh month in the Chăm calendar, usually in September or October. It lasts for three days and takes place around three important ancient structures in Ninh Thuận Province: the Po Klaung Yăgrai Tower, the Po Romé Tower and the Po Inû Nagar Temple. All of these places are very important to Champa culture and history.

On the morning of the first day, Cham families take part in processions as they travel to the towers and temple, bringing gifts of fruit, meat and rice. In a special ceremony, the Cham people receive the costumes of the Goddess Po Nagar from the Raglai people, a cultural group with close connections to Champa culture. The Chăm carry the costumes to the temple to celebrate Po Nagar, then they open the gates. Inside the temple, they start bathing the statues of important figures and watching sacred dances. After those performances, people enjoy lively parties until the evening of the festival's second day.

On the last day, people make special offerings to their gods at community houses in their villages and pray for luck and good health for the coming year. Once this is over, there are traditional music performances, and then people do fun activities like playing football and participating in weaving competitions.

In which paragraph does the passage mention activities that take place in villages on the last day of the festival?

Read the following passage about fitness trends 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 31 to 40.

FITNESS TRENDS

[I] Reformer Pilates is an advanced and more intense variation of traditional Pilates. [II] Since this type of equipment isn’t something you would typically have at home, you’ll need to visit a specialized Pilates center to try it. [III] While it might look easy at first, don’t be fooled - by the end of the session, your thighs will be burning, and you might struggle to walk up or down stairs for a few days afterward. [IV] This workout pushes your body to its limits, providing a more challenging experience than standard Pilates, and many find it an effective way to build both strength and flexibility.

Trampolining is another popular fitness trend, and although it may seem like child's play, it’s actually a highly effective workout. Jumping up and down on a trampoline can leave you feeling exhausted after just a few minutes. Surprisingly, it’s even better for heart health than running, while also improving coordination and helping to reduce stress levels. Trampolining is gaining widespread popularity, with new centers popping up that feature as many as 150 trampolines. These facilities offer options for everyone: you can enjoy 'freejumping,   where you bounce without an instructor, or pay for professional lessons to learn the best techniques and get the most out of your workout. Many people are discovering that trampolining combines fun and fitness in a way that makes staying active much more enjoyable.

If you're someone who is typically active but feeling down or emotionally drained, Dynamic Running Therapy might be just what the doctor ordered. This trend involves running with a therapist, combining the benefits of physical exercise with talk therapy. Though these sessions are often more expensive than typical therapy sessions because of the professional fees, they offer significant advantages. Running while talking helps distract you from any discomfort, allowing you to cover longer distances, and creates a relaxed, open environment that can make it easier to talk compared to the usual therapist’s office setting.

Which of the following best summarizes the passage?

Vì doanh nghiệp vẫn phải nhập khẩu thêm linh kiện để lắp ráp ô tô nên phải nộp thuế nào?

Cho hình chóp $S.ABCD$ có đáy là hình thoi cạnh $2a$, $\widehat{ADC}={{60}^{\circ}}$, $SA=6a$, $SA\bot \left(ABCD \right)$. Gọi $M$ là trung điểm của $SB$. Góc giữa hai đường thẳng $SA$ và $CM$ bằng

Nội dung nói về khẩu hiệu trong kinh tế nước ta là gì?

Kiến giải nào dưới đây là đúng khi cho rằng: Toàn cầu hóa là một xu thế khách quan, một thực tế không thể đảo ngược?

Cây không sử dụng được nitơ phân tử N2 trong không khí vì

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.

          Happiness is a universal goal, yet its ingredients differ across societies and cultures. For some, safety and security are paramount, as demonstrated by Singapore. Known for its strict laws and highly regulated environment, Singapore provides a clean, orderly, and safe place for its citizens. The government ensures access to basic necessities such as housing and healthcare, significantly reducing poverty and promoting equality. While personal freedoms may be limited, many Singaporeans find satisfaction in the stability and quality of life their country offers, showing that happiness can stem from collective security.

        In contrast, Mexico highlights the importance of social connections in achieving happiness. Despite challenges like poverty and limited access to essential resources, Mexicans often prioritize relationships with family, friends, and neighbors. Simple acts like sharing meals or gathering in the community foster a sense of belonging and emotional well-being. Psychologists have long noted that feeling part of a larger social group can be a powerful source of happiness, even when material wealth is scarce. For them, the joy derived from relationships often outweighs material concerns.

       The role of money in happiness, however, is often debated. In Mexico, many individuals live in similar financial conditions, reducing the pressure of economic competition. When neighbors lack expensive possessions, individuals are less likely to feel dissatisfied with their own circumstances. This suggests that relative wealth and equality may have a stronger influence on happiness than absolute income.

       Ultimately, there is no universal recipe for happiness. Factors like security, freedom, social bonds, and financial equality all play a role, but their importance varies depending on individual and cultural values. Happiness, therefore, remains a deeply personal and multifaceted pursuit, shaped by our unique perspectives and circumstances.                                                                   

In which paragraph does the author discuss the importance of social bonds in achieving happiness?

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. Nam: Yes, we should all have these basic life skills to be adults.

b. Nam: Because doing housework helps them develop life skills.

c. Anna: It's true. Life skills such as cooking, cleaning, or taking care of others are really necessary for kids when they grow up.

d. Anna: Thank you for sharing your idea. It's very useful for my project.

e. Anna: Why do you think children should do housework?

Biết \(\text{lim}{{u}_{n}}=5\); \(\text{lim}{{v}_{n}}=a\); \(\text{lim}\left( {{u}_{n}}+3{{v}_{n}} \right)=2018\), khi đó \(a\) bằng

Thung lũng sông là kết quả trực tiếp của quá trình gì?