Kí hiệu X là tập hợp tất cả các bạn học sinh x trong lớp 10A1, P(x) là mệnh đề chứa biến “x đạt học sinh giỏi”. Mệnh đề “∃x ∈ X, P(x)” khẳng định rằng:

Việt Nam Quốc dân Đảng chủ trương tiến hành cách mạng bằng bạo lực, chú trọng lấy lực lượng chủ lực là

Dãy số nào sau đây có giới hạn bằng 0?

Để đo chiều cao từ mặt đất đến đỉnh cột cờ của một kỳ đài trước Ngọ Môn (Đại Nội – Huế), người ta cắm hai cọc AM và BN cao 1,5 mét so với mặt đất. Hai cọc này song song và cách nhau 10 mét và thẳng hàng so với tim cột cờ (Hình vẽ minh họa). Đặt giác kế tại đỉnh A và B để nhắm đến đỉnh cột cờ, người ta được các góc lần lượt là 51°40' và 45°39' so với đường song song mặt đất.

Chiều cao của cột cờ (làm tròn kết quả đến chữ số thập phân thứ hai) là?

Một vòng dây dẫn kín hình tròn, diện tích S, đặt trong từ trường đều có cảm ứng từ B. Cho vòng dây quay đều với tốc độ góc \(\omega\) quanh trục trùng với đường kính của vòng dây và vuông góc với các đường sức từ. Những phát biểu nào sau đây đúng?

Một vật được ném từ độ cao H với vận tốc ban đầu v₀ theo phương nằm ngang. Bỏ qua sức cản của không khí, tầm xa L tăng 2 lần khi

Read a flyer promoting a new gym. Decide if the statements are true (T) or false (F). 

About us

You don't want just a gym membership. You want a membership that means something. And that means you need support, expert help and a community.

Best Body Fitness isn't just a gym: it's a full-service fitness membership made for you.

Here's how it works:

STEP ONE: Your assessment

We begin with an assessment session. This is a chance for you to see what we do at Best Body. Our assessment plans are no-cost and no-risk. We'll also make a training plan specifically for you.

STEP TWO: Your training

When you decide to become a Best Body member, we show you what to do, how to do it and why you are doing it. After a few sessions with an expert private trainer you will feel comfortable working out on your own. But don't worry, we'll always be nearby if you have questions.

STEP THREE: Your membership

Membership works on a month-to-month basis. There are no sign-up fees and no cancellation fees. Start and stop whenever you want. And the best part? Our fees are the most competitive in the whole downtown area.

STEP FOUR: Your community

At Best Body Fitness, we see everyone as part of a big team. And when you work with a team, you can do great things. Join any of our specialized classes, led by expert instructors. Come to our nutrition classes. Participate in our regular social events. Everything is included in your fee.

The first visit to the club is free.

Mục đích của chính sách văn hóa trong Hiến pháp năm 2013 của nước ta là gì?

Đọc tình huống sau và hãy cho biết: anh X đã thực hiện tốt các quyền dân chủ nào của công dân?

"Xã M triển khai mô hình Tổ nhân dân tự quản bảo vệ an ninh trật tự, an toàn xã hội trên địa bàn. Anh X tự nguyện tham gia các hoạt động tuần tra, phòng chống tệ nạn xã hội và xây dựng phong trào toàn dân bảo vệ an ninh Tổ quốc".

Cơ quan nhà nước nào có thẩm quyền quyết định các vấn đề về ngân sách nhà nước?

Nguyên tử của nguyên tố sodium (Z = 11) có cấu hình electron là

Một vật thể có dạng khối tròn xoay được tạo thành khi quay hình phẳng D quanh trục \(\Delta \) một vòng, biết rằng:

i) Hình phẳng D giới hạn bởi một parabol \(({\rm{P}})\) và đường thẳng a.

ii) Đường thẳng a vuông góc với đường thẳng \(\Delta \) là trục đối xứng của parabol \(({\rm{P}}).\)

iii) Đường thẳng a cắt parabol \(({\rm{P}})\) tại hai điểm có khoảng cách 6 dm, khoảng cách từ đỉnh của \(({\rm{P}})\) đến \(\Delta \) bằng 3 dm.

Thể tích của vật thể bằng bao nhiêu \({\rm{d}}{{\rm{m}}^3}\) (làm tròn kết quả đến hàng phần mười)?

Read the following passage about Unconventional Teachers Who Changed Lives 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.

Traditional education focuses on textbooks, but some teachers go beyond these limitations. Mrs. Rodriguez transformed her classroom into a living laboratory. Her students conducted experiments with plants and simple machines. She believed hands-on learning creates deeper understanding than reading alone. When asked why she taught differently, she replied, "I want students to fall in love with discovery." Her methods helped struggling students improve and develop passion for science.

Mr. Jackson abandoned lectures for storytelling and role-playing. His students experienced history by acting out important moments. This approach made history come alive and helped them remember key information. One student said, "Before Mr. Jackson's class, I thought history was boring, but he showed us it's fascinating." He took classes to historical sites and invited veterans to share experiences. These connections helped students understand how past shapes our present.

In a remote village, Ms. Chen taught English without proper textbooks. She created materials using newspapers and song lyrics. Despite limited resources, her students achieved remarkable results through her dedication. "Learning should be joyful, not painful," she told questioning parents. Ms. Chen organized conversation clubs and pen pal exchanges. These activities gave students practical language skills and confidence to use English in real situations.

Coach Williams was a life mentor who taught valuable lessons through sports. He focused on teamwork and fair play rather than winning. Students who struggled academically often excelled in his class. "The playing field is where children learn who they truly are," he explained. He created inclusive activities for all students regardless of athletic ability. Many former students credit him with teaching life skills like resilience and cooperation that helped them succeed after graduation.

The word “conducted” in paragraph 1 is OPPOSITE in meaning to _________.

Sau khi cuộc phản công kinh thành Huế thất bại, Tôn Thất Thuyết đã có hành động gì?

Read the passage carefully.

1. It is estimated that about 40 per cent of the world's population use social media, and many of these billions of social media users look up to influencers to help them decide what to buy and what trends to follow. An influencer is a person who can influence the decisions of his or her followers because of his or her knowledge or special knowledge in a particular area, e.g. fashion, travel, or technology. Influencers are now seen by many companies as a direct way to customers' hearts. Brands are now asking powerful influencers to market their products. With some influencers charging up to $25,000 for one social media post, it is no surprise that more and more people are keen to become influencers, too. If you are one of them, then here are five tips on how to do it.

2. Choose your niche: What is the area that you know most about? What do you feel most excited talking about? Find the specific area that you are most interested in and develop it.

3. Choose your medium and write an interesting bio: Most influencers these days are bloggers and micro-bloggers. Decide which medium – such as your own online blog, Instagram or Snapchat – is the best way to connect with your followers and chat about your niche area. When you have done that, write an attention-grabbing bio that describes you and your speciality area in an interesting and unique way. Make sure that people who read your bio will want to follow you.

4. Post regularly and consistently: Many influencers post daily on their social media accounts. The more you post, the more likely people will follow you. Also, make sure that your posts are consistent and possibly follow a theme.

5. Tell an interesting story: Whether it is a photo or a comment that you are posting, use it to tell a story that will catch the attention of your followers and help them connectwith you.

6. Make sure people can easily find your content: Publicize your posts on a variety of social media by hashtags and catchy titles to make sure that they can be easily found. There is no point writing the most exciting blogposts or posting the most attractive photographs if no one is going to see them.

7. Most importantly, if you want to become a social media influencer, you need to have patience. Keep posting and your following will gradually increase. Good luck!

Choose an option (A, B, C, or D) that best answers each question.

What can be inferred from paragraph 3?

Ảnh hưởng nào của liên kết hydrogen đến tính chất của các chất không đúng?

Read the following passage about the Koromi trend 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]. If you’ve done any traveling at all, you’re likely quite aware that customs and etiquette differ from one culture to another: what may be perfectly innocuous in one place may be hideously offensive in another, and vice-versa. [II]. Granted, even if you haven’t traveled at all, you’re probably aware of the fact that certain types of behavior aren’t exactly acceptable in other countries: belching at the table may be a sign of gratitude in some places, but in most areas of North America and Europe, such a display will earn you a fair bit of ire. [III]. Whether you plan on traveling to any of the places listed below or just doing business with a foreign client, it’s important to educate yourself on the standards of politesse and etiquette beforehand-the last thing you want to do is offend someone with any ignorant, boorish behavior. [IV]. Here’s how to be polite in different countries.

When dealing with Japanese clients, be sure to dress fairly conservatively, and make sure that you bow lower than they do upon meeting them. Accept gifts with both hands and open them later, not in front of the giver, and never blow your nose at the dining table. Avoid asking and answering direct questions: it’s better to imply rather than ask, and to answer with vagueness during conversations.

In Kenya, when greeting someone older or of a higher status than yourself, grip their right wrist with your left hand while shaking it; it’s a sign of respect and deference. Do ask questions about their health, family, business etc. before getting to major topics, as skipping these niceties is seen as impolite. If sharing meals, do not begin eating until the eldest male has been served and starts to eat.

Turning down an alcoholic drink is considered terribly offensive in Russia, so it’s a good idea to fortify yourself with some greasy food before heading out for a meal with Russian or Ukrainian clients. Don’t smile at strangers or they’ll think you’re deranged, and when paying for items, place your money on the counter rather than trying to hand it directly to the cashier.

Which of the following best summarizes paragraph III?

Nguyên tử của nguyên tố X có tổng số hạt bằng 82, hạt mang điện nhiều hơn hạt không mang điện là 22 hạt. Số proton và số khối của nguyên tử X là

Tập hợp nào sau đây có đúng một tập hợp con?

Trong quá trình bảo quản nông sản, hô hấp gây ra tác hại gì?