Cacbohiđrat nào sau đây thuộc loại polisaccarit?

Phát biểu nào sau đây không đúng?

Trung Quốc có nhiều kiểu khí hậu không phải do đâu?

Trong các ý sau, đâu không là đặc điểm của chăn nuôi bán công nghiệp?

Giá trị nội dung của văn bản Đăm Săn chiến thắng Mtao Mxây là gì?

Cần m (g) glucose để điều chế a (ml) ethyl alcohol 45° (D = 0,8g/ml), biết hiệu suất của phản ứng điều chế là 75%. Lượng khí CO2 sinh ra hấp thụ hoàn toàn vào 1 lít dung dịch Ca(OH)2 1M thu được 60 gam kết tủGiá trị của m và a lần lượt là

Nội dung nào sau đây là vai trò của Liên hợp quốc về bảo đảm quyền con người, phát triển văn hóa, xã hội?

Read the following notice about a new travel platform 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 1 to 6

MAKING HONEY

Do you like honey? Honey is a natural product, and it is made by honey bees. It has (1) __________ , which some people prefer to ordinary sugar. Sometimes it’s possible to know (2) __________  the flavour what kind of flowers the bees visited before producing the honey. Have you ever (3) __________  about how honey is produced? Beekeepers – people who look after bees are very important in the making of honey. They let the bees in their care (4) __________more honey than is needed. Then the honey can be removed without causing problems for the bees. Honey collection is an ancient activity, (5) __________ back at least 10.000 years. Thus, honey has become increasingly (6) __________  nowadays as a healthy food, so people of all age can use it not only to treat some simple ailments but also to slow down aging process.

Hàm số nào dưới đây có đồ thị không là đường hình sin?

It’s not the sort of show you’d watch from start to finish, but it’s fun to _____ every now and then.

Đặc điểm nổi bật trong xã hội hiện đại là?

Chọn ý đúng: Nhân tố nào là điều kiện hướng khai thác nguồn tài nguyên du lịch và doanh thu du lịch?

Although noise, commonly defined as unwanted sound, is a widely recognized form of pollution, it is very difficult to measure because the discomfort experienced by different individuals is highly subjective and, therefore, variable. Exposure to lower levels of noise may be slightly irritating, whereas exposure to higher levels may actually cause hearing loss. Particularly in congested urban areas, the noise produced as a by-product of our advancing technology causes physical and psychological harm, and detracts from the quality of life for those who are exposed to it.

Unlike the eyes, which can be covered by the eyelids against strong light, the ear has no lid, and is, therefore, always open and vulnerable; noise penetrates without protection. Noise causes effects that the hearer cannot control and to which the body never becomes  accustomeLoud noises instinctively signal danger to any organism with a hearing mechanism, including human beings. In response, heartbeat and respiration accelerate, blood vessels constrict, the skin pales, and muscles tense. In fact, there is a general increase in functioning brought about by the flow of adrenaline released in response to fear, and some of these responses persist even longer than the noise, occasionally as long as thirty minutes after the sound has ceased.

Because noise is unavoidable in a complex, industrial society, we are constantly responding in the same way that we would respond to danger. Recently, researchers have concluded that noise and our response may be much more than an annoyance. It may be a serious threat to physical and psychological health and well-being, causing damage not only to the ear and brain but also to the heart and stomach. We have long known that hearing loss is America's number one nonfatal health problem, but now we are learning that some of us with heart disease and ulcers may be victims of noise as well. Fetuses exposed to noise tend to be overactive, they cry easily, and they are more sensitive to gastrointestinal problems after birth. In addition, the psychic effect of noise is very important. Nervousness, irritability, tension, and anxiety increase affecting the quality of rest during sleep, and the efficiency of activities during waking hours, as well as the way that we interact with each other.

 Which of the following is NOT the response of human body to noise?

1. Do you find yourself yawning all day at school? You probably need more sleep. However, it is not just how much sleep you get that is important. What you do before bedtime also has a huge effect on how you feel the next day. If you spend time chatting to someone on social media, or reading a book on your e- reader, you are not alone.

2. All devices' screens give out a large amount of blue light, which affects the body's production of the sleep hormone, melatonin, which can change your sleep patterns. So it is not just getting to sleep that becomes hard, but the quality of your sleep also suffers. The result is that you can wake up several times during the night, and have difficulty getting up in the morning.

3. Sleep is food for the brain, so not sleeping well can be a severe problem for anyone, especially for teenagers, because their brains are still developing. When you do not sleep well, it can be difficult to concentrate at school, which makes it harder to learn and get good grades. It can also affect your mood, making you feel sad or anxious.   

4. So, it is clear you should not use your phone before you go to sleep. Why not leave it in another room? Nothing on social media is so important that it cannot wait a few hours! You should rediscover paper books and enjoy feeling tired and sleepy before bedtime rather than wondering why your best friend has not liked your photo! How will you wake up? You do not have to use the alarm on your phone. Go and buy yourself an old-fashioned alarm clock! The negative effects that screen time is having on sleep have been in the news a lot recently, so manufacturers of smartphones and tablets have added a feature to the mobile devices that can help reduce these. Most new phones have a night-time setting that changes the colour of the screen so that it gives out less blue light. If you really cannot avoid going onto social media at bedtime, think about turning on this setting on your phone.

Which of the following can be the best title of the passage?  

Read the following passage about the A Vision of a Harmonious Multicultural Society 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.

By 2050, our world will have undergone remarkable transformations in how different cultures coexist. The walls that once divided nations are vanishing into thin air as global citizens embrace diversity like never before. Technology will serve as the great equalizer, with translation devices making language barriers a thing of the past. In urban centers worldwide, neighborhoods will showcase architectural influences from multiple cultures, creating spaces where everyone feels at home regardless of their background. Public spaces will feature gardens with plants from different continents, symbolic of how various cultures can thrive together in one environment.

[I] Education systems will prioritize cultural literacy alongside traditional subjects. [II] Schools will teach world history from multiple perspectives rather than through a single cultural lens. [III] Students will routinely participate in virtual exchange programs, allowing them to form friendships with peers around the world without leaving their classrooms. [IV] Government policies will recognize that a harmonious multicultural society requires institutional support, with resources allocated to community centers where cultural exchange happens organically through shared meals, festivals, and collaborative art projects.

Economic systems will evolve to value diverse approaches to business and innovation. Companies will actively seek employees from varied backgrounds, recognizing that diverse teams create more innovative solutions. Traditional knowledge from indigenous communities will be respected and incorporated into sustainable development practices. The entertainment industry will produce content that authentically represents multiple cultures, moving beyond stereotypes to show the complexity within each tradition. Digital platforms will help preserve endangered languages and cultural practices through accessible archives and learning tools.

The greatest achievement of this harmonious world will be a new understanding of human identity. People will identify with multiple cultural traditions simultaneously without feeling conflicted about their loyalties. Holidays from various traditions will be celebrated collectively, creating new hybrid celebrations that honor multiple heritages. The concept of "us versus them" will gradually fade as people recognize shared values across different traditions. While challenges will remain, the dominant attitude will be one of curiosity rather than fear when encountering differences.

Which of the following best summarises paragraph 3?

Trong tình huống dưới đây, người dân xã X đã thực hiện quyền nào của công dân?

"Trong phong trào xây dựng nông thôn mới, chính quyền xã X đã có nhiều việc làm tích cực; tuy nhiên, vẫn còn một số cán bộ có việc làm gây dư luận không tốt trong nhân dân. Trước tình hình đó, bà con xã X đã phản ánh với báo chí về tình trạng: cán bộ phụ trách công trình đã không minh bạch trong việc thu chi tiền làm đường của các hộ dân trong xã".

Chuyển động của vật nào dưới đây có thể coi là chuyển động rơi tự do?

Cho hình chóp \(S.ABCD\) có đáy \(ABCD\) là hình chữ nhật, \(AB=a;\,BC=a\sqrt{3}\). Gọi \(M,N,K\) lần lượt là trung điểm của \(SA,\,SC,\,CD\) và \(O\) là giao điểm của \(AC\) và \(BD\). Xét tính đúng sai của các mệnh đề sau:

Cho hàm số y = f(x) có đồ thị như hình vẽ:

Khẳng định nào sau đây là đúng?

Một vật \(M\) được gắn vào đầu lò xo và dao động quanh vị trí cân bằng \(I\), biết rằng \(O\) là hình chiếu vuông góc của \(I\) trên trục \(Ox\), toạ độ điểm \(M\) trên \(Ox\) tại thời điểm \(t\) (giây) là đại lượng \(s\) (đơn vị: \(cm\)) được tính bởi công thức \(s=8,6\text{sin}\left( 8t+\frac{\pi }{2} \right)\).

Tìm khoảng cách (đơn vị cm) từ vật đến vị trí cân bằng tại thời điểm \(t=3\) giây. (Kết quả làm tròn đến hàng phần trăm).

Khi thiết kế, yếu tố an toàn thể hiện ở chỗ, màu đỏ: