Cho các phát biểu sau:

(a). Trong phòng thí nghiệm, có thể nhận biết một phản ứng thu nhiệt hoặc toả nhiệt bằng cách đo nhiệt độ của phản ứng bằng một nhiệt kế.

(b). Nhiệt độ của hệ phản ứng sẽ tăng lên nếu phản ứng thu nhiệt.

(c). Nhiệt độ của hệ phản ứng sẽ tăng lên nếu phản ứng toả nhiệt.

(d). Nhiệt độ của hệ phản ứng sẽ giảm đi nếu phản ứng toả nhiệt.

(e). Nhiệt độ của hệ phản ứng sẽ giảm đi nếu phản ứng thu nhiệt.

Số phát biểu đúng là

Việc tạo lập và sử dụng ngân sách nhà nước được tiến hành trên cơ sở nào?

Hãy nêu nguyên nhân dẫn đến sự xuất hiện chế độ tư hữu.

Cho cơ sở dữ liệu gồm các bảng sau:

1. Sách ( Mã sách , Tên sách, Mã tác giả , Mã thể loại , Mã NXB , Năm xuất bản)

2. Tác giả ( Mã tác giả , Tên tác giả, website, Ghi chú)

3. Thể loại ( Mã thể loại , Tên thể loại)

SELECT Sách.tên sách, Thể loại.tên thể loại

FROM sach INNER JOIN theloai

ON Sách.Mã thể loại= Thể loại.Mã thể loại

Thực hiện nhiệm vụ gì?

Speech is one of the most important ways of communicating. It consists of far more than just making noises. To talk and also (627) ___________ by other people, we have to speak a language, that is, we have to use combinations of sounds that everyone agrees to stand for a particular object or idea. Communication would be impossible (628) _________________. Learning a language properly is very important. The basic vocabulary of English is not very large, and not only about 2,000 words are needed to speak it quite well. But (629) ________________, the more precise you can be about their exact meaning. Words are the main thing we use in communicating what we want to say. (630) ________________. (631) _______________ of voice can express many emotions and show whether we are pleased or angry, for instance.

Câu 631:

(631) _______________ of voice can express many emotions and show whether we are pleased or angry, for instance.

CHỦ ĐỀ: SỰ SINH TỒN CỦA CÁC NGÔN NGỮ Ở VIỆT NAM HIỆN NAY

(Tham khảo bài văn của chủ đề trong đường link dưới đây ở trang 21)

https://tvsthpt.dlib.vn/app/doc-sach-ebook/d0a01a0e4114

Và trả lời câu hỏi sau:

Theo bài đọc, giữa các lứa tuổi sử dụng ngôn ngữ dân tộc thiểu số có sự phân biệt và xung đột vì mất đi ngôn ngữ dẫn đến mất mát văn hóa và danh tính dân tộc.

Đúng hay sai?

Nhận định nào sau đây không phản ánh đúng các dấu hiệu nhận diện 1 cơ hội kinh doanh tốt?

Một viên đạn pháo được bắn từ mặt đất với vận tốc \({{v}_{0}}\) hợp với phương ngang một góc \(\theta \) (đơn vị: độ, \({{0}^{{}^\circ }}<\theta <{{45}^{{}^\circ }}\) ) và tầm bắn được mô hình hóa bởi hàm số \(\text{R}(\theta )=\frac{v_{0}^{2}\cdot \sin (2\theta )}{g}(~\text{m})\), trong đó \(g\) là gia tốc trọng trường lấy xấp xỉ bằng \(9,8~\text{m}/{{\text{s}}^{2}}\). Với \({{v}_{0}}=500~\text{m}/\text{s}\), tính \(\theta \) để viên đạn trúng mục tiêu trên mặt đất phẳng cách đó 19500 m (nhập đáp án vào ô trống, kết quả làm tròn đến hàng đơn vị):

Cho thông tin sau:

Việt Nam đang trong giai đoạn phát triển và đã có nhiều giải pháp tạo việc làm cho người lao động được đưa ra. Tuy nhiên, thực tiễn cho thấy, chất lượng lao động ở Việt Nam còn nhiều hạn chế, nhất là trong bối cảnh hội nhập và Cách mạng công nghiệp 4.0 đang tạo áp lực lớn đối với cơ cấu lao động, chất lượng lao động và giải quyết việc làm cho người lao động.

(Nguồn: Tạp chí Tài chính)

Nhận định nào dưới đây là đúng/sai?

Biểu hiện nào sau đây không thể hiện tính tích hợp của môn Địa lí?

Nếu tuyến yên sản sinh ra quá ít hoặc quá nhiều hoocmôn sinh trưởng ở giai đoạn trẻ em sẽ dẫn đến hậu quả gì?

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 31 to 40.

Biting into a ripe, juicy fruit brings a smile to many people’s faces. But eating that same fruit a week before it is ripe probably wouldn’t be as enjoyable! Unripe fruits are often hard and bitter, but that serves a purpose. The hard exterior of an unripe fruit protects the developing seed inside. After a seed fully develops inside the fruit, the fruit changes color, softens, and gets sweeter to become more attractive to animals and humans. These organisms eat the fruit and spread its seeds, ensuring the plant’s survival and regrowth.

But how does a fruit ripen? The ripening process involves many complex chemical reactions. When a fruit ripens, it goes through a chemical change. A chemical change happens when bonds within molecules break, and the atoms that once formed them regroup into new molecules. Chemical changes are irreversible. Once a fruit ripens, it cannot become unripe again.

One molecule responsible for this chemical change is ethylene. Ethylene (C2H4) is a colorless gas made up of carbon and hydrogen atoms. (I). It is a naturally occurring molecule in the atmosphere. (II). It is also an important plant hormone. (III). Plants release ethylene through the growing tips of roots, flowers, and ripening fruit. (IV). Although ethylene serves other purposes in plants, one of its main purposes is to trigger the chemical reactions that cause fruits to ripen. As the fruit matures, oxygen in the air helps stimulate the production of ethylene. This ethylene production is a signal that begins fruit ripening. For that reason, unripe fruits have low levels of ethylene, while ripe fruits have higher levels of ethylene. Most fruits produce ethylene and respond to ethylene in the atmosphere.

Although fruits require ethylene to ripen, different types of fruits respond to this molecule in two distinct ways: non-climacteric fruits and climacteric fruits. Non-climacteric fruits do not ripen after harvesting. They produce very little ethylene of their own. Climacteric fruits, on the other hand, continue to ripen after they are picked. These fruits produce a large amount of ethylene. Climacteric fruits can also speed up the ripening process of other fruits nearby since they release high levels of ethylene into the air.

Which of the following is OPPOSITE in meaning to exterior in paragraph 1?

Một chất điểm dao động điều hòa có vận tốc bằng không tại hai thời điểm liên tiếp \({t_1} = 2,2{\mkern 1mu} \left( s \right)\) và \({t_2} = 2,9{\mkern 1mu} \left( s \right)\). Tính từ thời điểm ban đầu (\({t_o} = 0{\mkern 1mu} s\)) đến thời điểm \({t_2}\) chất điểm đã đi qua vị trí cân bằng số lần là:

Cho hình hộp \(ABCD.A\text{ }\!\!'\!\!\text{ }B\text{ }\!\!'\!\!\text{ }C\text{ }\!\!'\!\!\text{ }D\text{ }\!\!'\!\!\text{ }\). Một đường thẳng \(\Delta\) cắt các đường thẳng \(AA\text{ }\!\!'\!\!\text{ },\,BC,\,C\text{ }\!\!'\!\!\text{ }D\text{ }\!\!'\!\!\text{ }\) lần lượt tại M, N, P sao cho \(\overrightarrow{NM}=2\overrightarrow{NP}\). Tính \(\frac{MA}{MA\text{ }\!\!'\!\!\text{ }}\).

Read the following passage about the The Importance of Social Media in Modern 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.

In the 21st century, social media has become a crucial element of everyday life[I]. Platforms such as Facebook, Twitter, Instagram, and TikTok link individuals around the world, [IV]. Although some may critique social media for promoting negativity, it is important to acknowledge its numerous positive effects on society[III]. This essay will delve into the importance of social media, its influence on shaping public perception, and the challenges it poses.[II]

One of the primary benefits of social media is its ability to foster communication and connection. People can maintain relationships with friends and family, regardless of geographical barriers. This aspect is particularly vital for those who live far away from loved ones. For example, a student studying abroad can easily share their experiences with family through posts, photos, and video calls. Furthermore, social media enables individuals to connect with like-minded people and build communities around shared interests or causes. Activist groups, for instance, often use social media platforms to rally support for important issues, raising awareness and mobilizing action more efficiently than traditional methods.

Moreover, social media serves as a powerful tool for information dissemination. News spreads rapidly through these platforms, allowing individuals to stay informed about current events. During emergencies, such as natural disasters, social media can provide crucial information in real time, helping people stay safe and informed. However, this rapid dissemination of information also raises concerns about the accuracy and reliability of the content being shared. Misinformation can spread just as quickly as legitimate news, leading to confusion and mistrust.

Despite the challenges posed by misinformation, social media plays a significant role in shaping public opinion. People often turn to these platforms to voice their opinions and engage in discussions on various topics. For instance, political debates and social movements frequently gain traction through social media, allowing individuals to express their views and influence others. This democratization of discourse can empower marginalized voices and facilitate social change. However, it is crucial to approach online discussions critically, as echo chambers can form, reinforcing existing beliefs rather than encouraging open dialogue.

In conclusion, while social media presents challenges such as misinformation and polarized discussions, its positive contributions to communication, information dissemination, and social activism cannot be overlooked. As society continues to evolve, it is essential to harness the potential of social media while being mindful of its pitfalls. By promoting responsible use and critical thinking, we can maximize the benefits of social media and foster a more connected and informed society.

Which of the following is TRUE according to the passage?

Ruột non của thú ăn thực vật rất dài có tác dụng gì?

Chọn một từ mà nghĩa của nó KHÔNG cùng nhóm với các từ còn lại.

Choose A, B, C or D that has the OPPOSITE meaning to the underlined word/phrase in each question.

In some most Asian countries women are undervalued and they never have the same status as men.

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 thefollowing questions from 13 to 17.

a. Nina: Almost! I just need to add a few final touches. It’s been a fun but challenging project.

b. Alex: Have you finished your painting for the art exhibit?
c. Alex: I’m sure it’ll turn out amazing. Your work always impresses us!

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. 

A few years ago, amid a record drought, scientists noticed something odd. A few of California’s giant sequoias inside Sequoia and Kings Canyon National Parks were dying in ways no one had ever documented – from the top down. When researchers climbed into the canopies, they discovered that beetles had bored into a few branches. By 2019, at least 38 of the trees had died – not a large number, but "concerning because we’ve never observed this before,” says Christy Brigham, the park’s chief of resource management.

Scientists had assumed that stately sequoias, with their bug-repelling tannins, were immune to dangerous pests. Worried experts are investigating whether some mix of increased drought and wildfire, both worsened by climate change, have now made even sequoias susceptible to deadly insect invasions.

If so, these ancient sentinels would be just the latest example of a trend experts are documenting around the world: Trees in forests are dying at increasingly high rates—especially the bigger, older trees. According to a study in the journal Science, the death rate is making forests younger, threatening biodiversity, eliminating important plant and animal habitat, and reducing forests’ ability to store excess carbon dioxide generated by our consumption of fossil fuels. [A]

There is no single direct cause. Decades of logging and land clearing play a role, scientists say. But increasing temperatures and rising carbon dioxide from the burning of fossil fuels have significantly magnified most other causes of tree death. Scientists are documenting longer and harsher droughts, more severe outbreaks of insects and disease, and increasingly catastrophic wildfires.

With 60,000 known tree species on Earth, those shifts are playing out differently across the planet. In central Europe, for instance, “You don’t have to look for dead trees,” says Henrik Hartmann, with Germany's Max Planck Institute for Biogeochemistry. “They’re everywhere.” In one recent year, following a week of excessive heat, hundreds of thousands of beech trees dropped their leaves. Even in colder regions, “You get a couple of hot years and the forests are suffering,” says Hartmann. “There are individual species that are being driven beyond the threshold of what they can handle.” [B]

Just last year, massive fires marched through a dry Australia, smoldered across 7.4 million acres in northern Siberia, and focused the world’s attention on blazes in the Amazon.

The consequences of all these changes around the world are still being assessed. The first national look at tree mortality in Israel showed vast stretches disappearing, thanks largely to scorching heat and wildfires. [C] In a country largely blanketed by stone and sand, forests mean a great deal. Trees support nests for eagles and habitat for wolves and jackals. They hold soil with their roots. [D]

“We’re dealing with a very tough situation. It’s a race to the unknown,” says Tamir Klein at the Weizmann Institute of Science.

In which space (marked A, B, C and D in the passage) will the following sentence fit?

Without them, plants that normally rise in trees’ shadows are suddenly exposed to higher temperatures and bright light.