Cho sơ đồ bộ đếm như hình bên dưới.

Nếu LED sáng tương ứng với bit 1 và LED tắt là bit 0 thì giá trị hiện tại của bộ đếm ở hệ nhị phân là

Xác định một từ/cụm từ SAI về ngữ pháp, ngữ nghĩa, logic, phong cách…

Bộ Ngoại giao hiện đang rất tích cực đàm phán, trao đổi với các đối tác cho việc công nhận lẫn nhau hộ chiếu vắc xin.

Tại lớp 12A, có $35\%$ học giỏi môn Toán, $25\%$ học sinh học giỏi môn Văn và $18\%$ học sinh học giỏi cả hai môn Toán và Văn. Chọn ngẫu nhiên một học sinh của lớp 12A. Xác suất để chọn được một học sinh không giỏi môn nào trong hai môn Toán, Văn là

Cho hằng số $C$ và hàm số $F(x)$ là một nguyên hàm của hàm số $y = f(x).$ Nguyên hàm $I=\displaystyle \int \left[ 2f(x)+1 \right]\mathrm{d}x$ là

Cho biết những phát biểu dưới đây là đúng hay sai.

I-li-at và Ô-đi-xê là bản anh hùng ca nỗi tiếng của nước nào thời cô đại?

Theo quy định pháp luật, một trong những nguyên tắc để thực hiện quyền bầu cử của công dân là gì?

Read the following passage about effective English language learning and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from from 18 to 22.

Learning a new language, especially English, can be both challenging and rewarding. To maximize your language learning potential, it's essential to adopt effective strategies. ___(18)___. By understanding your learning style and setting clear goals, you can create a personalized learning plan.

One of the most effective ways to improve your English is through consistent practice. ___(19)___. This could involve reading books, articles, or news, watching movies or TV shows, or listening to English songs or podcasts.

To enhance your speaking skills, it's crucial to engage in regular conversation practice. ___(20)___. Joining language exchange groups or finding a language partner can provide opportunities to practice speaking and receive feedback.

While practice is essential, it's equally important to learn correct grammar and vocabulary. ___(21)___. Using grammar books, online resources, or language apps can help you master the rules of English grammar.

In conclusion, effective English language learning requires a combination of consistent practice, strategic learning, and a positive mindset. ___(22)___. By embracing these strategies, you can achieve your English language goals and open up new opportunities.

Read the following passage about education in Nepal 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. 

Fashion in the 1960s reflected the cultural and political upheaval of the time. The hippie and counterculture movement gave rise to accessories like Pocahontas-style headbands and medallions worn around the neck. Hippies wore long, loosely fitting clothing, often in natural fabrics. Hemlines rose as Mary Quant popularized the miniskirt and hot pants in her lines for JC Penney. And mod fashion, with brightly colored space-age geometric patterns, shift dresses and colored tights became the mainstream. Both miniskirts and mod-shift dresses were worn with knee-high go-go boots.

[A] During the 1970s, the loose-fitting hippie clothes of the prior decade gave way to exotic fabrics and bell-bottom jeans for men and women. Hemlines continued to rise and hot pants continued their popularity, reflecting the flashy style of the decade. However, the 1970s also saw the popularity of a longer hemline, from mid-calf to ankle-length. [B] Women wore peasant-style clothing, especially blouses with off-the-shoulder necklines and lace trim, with their jeans or skirts. [C] Disco fashion emerged, featuring bright patterns and tightly fitting clothing meant to show off the body. Platform shoes elevated their wearer, male or female, anywhere from two to four inches or more. [D]

The 1980s saw another fashion upheaval. Angst-ridden punks wore Dr. Marten and steel-toed army boots, chains, tartan patterns, and bondage pants. Punks focused more on their hair during this period, dying, teasing and chopping their hair into asymmetric styles that seemed to defy gravity. Women—and men—experimented with heavy eyeliner in a variety of colors. Women wore neon colors, jelly shoes, tight jeans, leggings, leg warmers and oversized sweatshirts. Menswear-inspired looks also became popular for both sexes. Men wore ‘power suits,’ named so for their price, which made these suits a reflection of the wealth of the wearer. Women’s jackets featured big shoulder pads that made the shoulders appear higher and larger, similar to the male silhouette.

1990’s fashion was far more subdued than the garish, wild styles of the 1980s. Bands like Nirvana influenced the grunge look, which featured rock-concert tee shirts under plaid flannel shirts, jeans and long, greasy hair. Overalls were worn by both sexes, either with one or both shoulder straps unhooked. The punk style of the 1870s and 1980s evolved into the goth fashion trend, which featured black clothing, black boots and studded bracelets in the style of bands like Nine Inch Nails and Marilyn Manson.

Which of the following is TRUE according to the passage?

Trong mặt phẳng toạ độ, cho đường thẳng \(\Delta :x - 2y - 3 = 0\). Đường thẳng nào sau đây có vị trí tương đối trùng với đường thẳng \(\Delta \)?

Nội dung nào sau đây là đặc điểm của văn bản quy phạm pháp luật?

Thực hiện phép toán OR trên hai dãy bit, kết quả thu được là

Read the passage below and choose A, B, C or D.

Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

What does the word “They” in paragraph 2 refer to?

Nêu một số biện pháp an toàn khi sử dụng điện? 

Tiếng sét và tia chớp được tạo ra gần như cùng một lúc, nhưng ta thường nhìn thấy chớp trước khi nghe thấy tiếng sét. Giải thích đúng là: 

Cơ quan nào dưới đây có khả năng tiết dịch mật?

Quy trình sản xuất giá thể viên nén xơ dừa gồm mấy bước?