Chất hóa học nào trong khói thuốc lá có khả năng kết hợp với hemoglobin làm giảm khả năng vận chuyển O₂ của máu?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27:

People come to this small country for many reasons. They can admire spectacular (23)_________ meet friendly natives, and enjoy a vibrant arts scene. Some are searching for their family (24) _________ or others just want to get away from it all and, digging up old memories from their English Lit class of gallant heroes engaging in larger-than-life struggles, their minds wander to faraway lands, to somehow familiar yet different destinations. Why not go to Scotland? But what kind of country are they coming to and what should they expect once they get there? Scotland (25) _________ of an area of 30, 418 square miles - so it's a fairly compact and "doable" country - with a population of about five million people - not too small, not too big. It is one of three countries that form the political (26) _________ called Great Britain, the other two being, of course, England and Wales, which, along with their fourth partner, Northern Ireland, becomes the United Kingdom. Scotland is bordered on three sides by water and on its fourth by England, which has had both its advantages and disadvantages. Geographically speaking, the country can be divided into three broad areas, the Southern Uplands, the Central Lowlands, and the Highlands. Although the rugged Highlands (27) _________ about two-thirds of the land area, the vast majority of the population lives in the Central Belt between Glasgow, Scotlands largest city, and Edinburgh, Scotland's capital.

Thị trường việc làm kết nối mối quan hệ cung - cầu lao động trên thị trường thông qua nhiều hình thức, ngoại trừ hình thức nào?

Circle A, B, C or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. 

Sử liệu là gì?

Read the following passage about Innovation Driven by Environmental Need 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.

Green startups have emerged as forces for positive environmental change. These companies create sustainable solutions for urgent ecological challenges. Unlike traditional businesses prioritizing profits, green startups balance financial goals with environmental responsibility. Many were founded by young entrepreneurs who witnessed environmental degradation and felt compelled to act. Their mission extends beyond making money; they aim to heal our planet while building successful businesses.

Eco-friendly startups have grown across various sectors. From renewable energy and sustainable agriculture to zero-waste products, these companies revolutionize how we interact with our environment. GreenWave developed ocean farming requiring no fertilizers while capturing carbon. Notpla created edible packaging from seaweed as a plastic alternative. These innovations show how creativity and environmental consciousness produce extraordinary results. Their success proves sustainability and profitability can coexist.

Funding for green startups has increased in the past decade. Investors recognize supporting environmentally responsible businesses is both ethical and financially prudent. Venture capitalists have established funds dedicated to sustainable startups, providing capital to scale operations. Government grants have become more accessible to entrepreneurs developing green technologies. Despite positive developments, green startups still face regulatory hurdles and competition from established industries resistant to change.

The future looks promising for environmental businesses as consumers shift toward sustainable products. Studies show modern consumers, particularly younger generations, will pay premium prices for eco-friendly alternatives. This trend creates fertile ground for green startups to thrive. As climate concerns intensify, demand for innovative environmental solutions will grow stronger. Green startups are positioned to meet this demand while driving positive change, demonstrating business innovation and environmental stewardship can create a sustainable world.

Which of the following is TRUE according to the passage?

Tổ chức nào sau đây là bào quan?

Theo Đacuyn, nhân tố chính trong quá trình hình thành những đặc điểm thích nghi trên cơ thể sinh vật qua chọn lọc tự nhiên (CLTN) là gì?

Thủ phủ cam Quỳ Hợp và một số vùng cam lớn ở các huyện Nghĩa Đàn, Con Cuông, Tân Kỳ… những năm trước là vựa cam lớn của tỉnh Nghệ An nhưng nay đã bị chặt bỏ, diện tích còn lại không nhiều do sâu bệnh phá hoại và chất lượng giống kém. Nhưng, vẫn còn nhiều vườn cam ở các huyện Yên Thành, Thanh Chương, Anh Sơn, Nghi Lộc… vẫn trĩu quả, đang vào mùa thu hoạch.

Vùng cam xã Đoài xã Nghi Diên giá bán bao giờ cũng cao gấp nhiều lần so với cam ở nơi khác. Mặc cho giá cao, nhiều người vẫn muốn mua mà không có đủ hàng bán. Giá bình quân một quả cam ở đây không phải chỉ có năm nay mà năm nào cũng không dưới 70.000 đồng, có lúc lên đến 100.000 đồng / quả, nhất là những quả cam chín muộn vào dịp Tết Nguyên đán.

Sở dĩ cam ở đây nổi tiếng thơm ngon, bán được giá cao bởi dưới lớp đất sâu ở vùng này có rất nhiều vỏ nghêu, sò, ốc, hến, có lẽ xưa kia đây là bãi biển nên cam ở đây rất ngọt, thơm ngon và một nguyên nhân nữa là cam ở đây được trồng từ cành chiết nên giữ nguyên được chất lượng vốn có của giống cam xã Đoài ngày xưa để lại.

Theo số liệu của Chi cục Trồng trọt và BVTV Nghệ An, tính đến đầu năm 2021, diện tích cam toàn tỉnh có 4.735 ha nhưng sau đó chỉ còn lại gần 1.800 ha. Số diện tích còn lại tập trung ở các huyện Thanh Chương, Yên Thành, Anh Sơn… Đa phần diện tích cam còn lại được chăm sóc tốt nên vườn nào cũng sai quả, quả to, có thể cho năng suất bình quân trên dưới 25 tấn / ha.

(Nguồn: nongnghiep.vn)

Giả sử năm 2020, 1 quả cam Xã Đoài được bán với giá 70.000 đồng vậy bà con thu về được bao nhiêu tiền từ 50 quả cam?

Trên vỏ một tụ điện có ghi $1000\mu \text{F}-63\text{ V}$. Điện tích tối đa có thể tích cho tụ có giá trị llà

Read the passage carefully. Choose an option (A, B, C or D) that best answers each question from 23 to 30.

1. How do children learn about wildlife? And is what they learn the sort of thing they should be learning? It is my belief that children should not just be acquiring knowledge of animals but also developing attitudes and feelings towards them based on exposure to the real lives of animals in their natural habitats. But is this happening?

2. Some research in this area indicates that it is not. Learning about animals in school is often completely disconnected from the real lives of real animals, with the result that children often end up with little or no understanding or lasting knowledge of them. They learn factual information about animals, aimed at enabling them to identify them and have various abstract ideas about them, but that is the extent of their learning. Children's storybooks tend to personify animals as characters rather than teach about them.

3. For direct contact with wild and international animals, the only opportunity most children have is visiting a zoo. The educational benefit of this for children is often given as the main reason for doing it but research has shown that zoo visits seldom add to children's knowledge of animals – the animals are simply like exhibits in a museum that the children look at without engaging with them as living creatures. Children who belong to wildlife or environmental organizations or who watch wildlife TV programmes, however, show significantly higher knowledge than any other group of children studied in research. The studies show that if children learn about animals in their natural habitats, particularly through wildlife-based activities, they know more about them than they do as a result of visiting zoos or learning about them in the classroom.

4. Research has also been done into the attitudes of children towards animals. It shows that in general terms, children form strong attachments to individual animals, usually their pets, but do not have strong feelings for animals in general. This attitude is the norm regardless of the amount or kind of learning about animals they have at school. However, those children who watch television wildlife programs show an interest in and affection for wildlife in its natural environment, and their regard for animals in general is higher.

What opinion does the writer express in the second paragraph?

Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a cohesive and coherent exchange or text in each of the following questions from 14 to 18. 

a. Tom: Then, text me when you're home.

b. Tom: It's getting late. Would you like me to give you a lift home?

c. Mary: Thanks, but I'm going to walk to the supermarket and then take a bus home. 

Có bao nhiêu nhận định đúng khi nói về quá trình trao đổi chất ở sinh vật?

(1) Chuyển hóa các chất ở tế bào được thực hiện qua quá trình tổng hợp và phân giải các chất.

(2) Chuyển hóa các chất luôn đi kèm với giải phóng năng lượng.

(3) Trao đổi chất ở sinh vật gồm quá trình trao đổi chất giữa cơ thể với môi trường và chuyển hóa các chất diễn ra trong tế bào.

(4) Tập hợp tất cả các phản ứng diễn ra trong và ngoài cơ thể được gọi là quá trình trao đổi chất.

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 “them” in paragraph 2 refers to _________.