Mệnh đề “$\exists x \in \mathbb{R},{x^2} = 8$” khẳng định rằng:

Read the following passage about studying abroad 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.

Successful students often do the followings while studying. First, they have an overview before reading. Next, they look for important information and pay greater attention to it (which often needs jumping forward or backward to process information). They also relate important points to one another. Also, they activate and use their prior knowledge. When they realize that their understanding is not good, they do not wait to change strategies. Last, they can monitor understanding and take action to correct or “fix up” mistakes in comprehension.

Conversely, students with low academic achievement often demonstrate ineffective study skills. [I] They tend to assume a passive role in learning and rely on others (e.g., teachers, parents) to monitor their studying. [II] For example, low-achieving students often do not monitor their understanding of content; they may not be aware of the purpose of studying; and they show little evidence of looking back or employing “fix-up” strategies to fix understanding problems. [III] Students who struggle with learning new information seem to be unaware that they must extend effort beyond simply reading the content to understand and remember it. [IV] 

Children with learning disabilities do not plan and judge the quality of their studying. Their studying may be disorganized. Students with learning problems face challenges with personal organization as well. They often have difficulty keeping track of materials and assignments, following directions, and completing work on time. Unlike good studiers who employ a variety of study skills in a flexible yet purposeful manner, low-achieving students use a restricted range of study skills. They cannot explain why good study strategies are important for learning; and they tend to use the same, often ineffective study approach for all learning tasks, ignoring task content, structure or difficulty.

Which of the following is TRUE about students with low academic achievement, according to the passage?

Nguy cơ phát sinh bệnh cũng như hiệu quả trong kiểm soát bệnh không có liên quan đến yếu tố nào sau đây?

Nhóm cây trồng nào sau đây phân loại theo chu kì sống ?

Cho \(\text{sin}\alpha =\frac{3}{5}\) với \({{90}^{\circ }}<\alpha <{{180}^{\circ }}\).

Cho hình chóp \(S.ABC\) có đáy \(ABC\) là tam giác đều, \(SA\bot \left( ABC \right)\). Gọi \(\left( P \right)\) là mặt phẳng qua \(B\) và vuông góc với\(SC\). Thiết diện của \(\left( P \right)\) và hình chóp \(S.ABC\) là:

Cho hàm số \(f(x) = {x^2} - 6x + 3\). Khẳng định nào đúng?

Trường hợp nào sau đây vận tốc và tốc độ có độ lớn như nhau?

Nguyên tử Iron (Fe) có Z = 26. Cấu hình electron của nguyên tử Fe là

So sánh nào dưới đây là đúng?

Văn bản Ra-ma buộc tội được trích từ tác phẩm nào?

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.

Mountain Lions Amid Wildfires: A Struggle for Survival

Beth Pratt, the California director for the National Wildlife Federation, has spent her career protecting Los Angeles’ mountain lions. These top predators live in a rocky area surrounded by fancy houses and many roads. When wildfires destroy vast stretches of open land, the survival options for these animals become critically limited. “This is the LA area—these mountain lions can’t just move into the Kardashians’ backyard,” Pratt says, her voice filled with concern for the animals in such a difficult situation.

(I) The chaparral vegetation, covering about 10% of California, is one of the world’s most flammable ecosystems. (II) In Los Angeles, suburban sprawl intrudes on these areas, blocking wildlife escape routes. (III)Fires strip the land of food and shelter, transforming vibrant ecosystems into barren landscapes. (IV) Pratt highlights the urgency of the situation, explaining how areas that once supported life are now “taken out of commission,” leaving many species to starve or struggle for survival.

The consequences extend beyond wildlife. Wildfires have caused devastating human losses, with 88,000 people evacuated and a rising death toll of 25. Meanwhile, the non-human world suffers equally, particularly endangered species with limited ranges. Red-legged frogs, reintroduced into Santa Monica streams in 2014, are among the most affected, with their habitats repeatedly destroyed. The Woolsey Fire of 2018 was followed by mudslides that wiped out much of the region's delicate ecosystem, and scientists fear similar outcomes this time. California newts, reptiles, and snakes are also at high risk, while mammals and birds, although more likely to escape, face challenges in finding food and shelter as the ecosystem bounces back.

Despite the devastation, hope remains. The chaparral is a fire-adapted ecosystem, and life often endures beneath the soil. Seeds can survive and germinate quickly, with grasses sprouting weeks after the first rain. Shrubs may take up to a decade to recover, depending on rainfall. Prof. Stefan Doerr, an expert on wildfires, emphasizes the resilience of this landscape, noting its evolutionary adaptation to high-intensity fires occurring every 30 to 100 years. While the aftermath looks bleak, these fires play a role in maintaining biodiversity, offering a glimmer of hope for recovery.

Which of the following is NOT a factor threatening chaparral vegetation?

Có bao nhiêu số nguyên \(x\) sao cho tồn tại số thực \(y\) thỏa mãn \(\log _{3}(x+y)=\log _{4}\left(x^{2}+y^{2}\right)\)?

Read the following leaflet 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 7 to 12. (1,5 points)

HEALTHY EATING MADE EASY!

Eating well is essential for a balanced life. Here are some tips to get you started:

• Include plenty of fruits and vegetables in your diet. You can find (7) _____ options at your local market.
• When cooking, try to (8) _____  unhealthy fats and sugar. Use fresh ingredients instead!
• Remember to drink enough water, (9) _______ it is crucial for your health and helps keep you energized.
• If you feel hungry between meals, reach for (10) _____ snacks like nuts or yogurt instead of chips.
• It’s important to have moderate food (11) _____. Overeating can lead to health (12) ______.
• Lastly, enjoy your meals with family or friends to make eating a joyful experience.

Cho hình chóp đều \({\rm{S}}.{\rm{ABCD}}\) có tất cả các cạnh bằng nhau. Góc giữa đường thẳng SA và mặt phẳng ABCD là \({{\rm{n}}^o }\) với n là số thực. Giá trị của n bằng bao nhiêu?

Trong chăn nuôi có loại chất thải nào?

Sản phẩm được bảo quản bằng phương pháp HPP có ưu điểm gì?

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

Nền của các lục địa được cấu tạo chủ yếu bởi tầng đá gì?

Người ta chia khoa học thành nhóm nào sau đây?