Tiêu đề ĐỀ THI HSG ANH 12 CỤM TRƯỜNG BẮC NINH 2024-2025.docx ✅

1 SỞ GD VÀ ĐT BẮC NINH CỤM TRƯỜNG THPT (Đề thi gồm 17 trang ) ĐỀ THI GIAO LƯU HỌC SINH GIỎI THPT NĂM HỌC 2024-2025 Môn: Tiếng Anh Ngày thi: 08 tháng 12 năm 2024 Thời gian làm bài: 90 phút (không kể thời gian phát đề) Listen to a lecture on diamonds and choose the correct answer A, B, C, or D which fits best according to what you hear. Write your answers onto the answer sheet. Question 1. What is the purpose of this lecture? A. To discuss the formation of diamonds. B. To review the elements of carbon. C. To discuss types of gems. D. To compare diamonds and gold Question 2. In which condition(s) do diamonds form in the Earth’s mantle? A. Both B and C. B. High temperature and extreme pressure occur. C. Carbon is transported. D. A large amount of carbon deposits Question 3. Which of the following is NOT one of the 4 C's used by the jewelry business? A. Color B. Carat C. Carbon D. Cut Question 4. What is a "seed" in the context of diamond production? A. A synthetic material used to grow diamonds. B. A rare type of carbon found in nature. C. A small piece of natural diamond used as a base. D. A colorful diamond formed under high pressure. Question 5. What does the term "fancies" refer to in the lecture? A. Artificial diamonds made without any natural materials. B. Transparent diamonds with perfect clarity. C. Diamonds that are not considered genuine. D. Rare, colorful diamonds found in nature. Question 6. Why do some people in the jewelry business avoid the term "synthetic diamonds"? A. Because the production method is expensive. B. Because it implies the diamonds are fake. C. Because synthetic diamonds are not made of carbon. D. Because natural diamonds are cheaper


4 Question 19. A. thunder B. quake C. bore D. tsunami Question 20. A. actuality B. truth C. reality D. fact Question 21. A. disperse B. suppose C. converge D. conclude Question 22. A. radical B. severe C. high D. extreme Question 23. A. close to B. proximity to C. verge on D. near Question 24. A. hand in hand B. little by little C. all in all D. side by side Question 25. A. perpetual B. expel C. swallow D. regurgitate Question 26. A. except B. besides C. due to D. rather than Read the following text and mark the letter A, B, C, or D to indicate the correct answer to each of the questions. There is increasing evidence that the impacts of meteorites have had important effects on Earth, particularly in the field of biological evolution. Such impacts continue to pose a natural hazard to life on Earth. Twice in the twentieth century, large meteorite objects are known to have collided with Earth. If an impact is large enough, it can disturb the environment of the entire Earth and cause an ecological catastrophe. The best-documented such impact took place 65 million years ago at the end of the Cretaceous period of geological history. This break in Earth’s history is marked by a mass extinction, when as many as half the species on the planet became extinct. While there are a dozen or more mass extinctions in the geological record, the Cretaceous mass extinction has always intrigued paleontologists because it marks the end of the age of the dinosaurs. For tens of millions of years, those great creatures had flourished. Then, suddenly, they disappeared. The body that impacted Earth at the end of the Cretaceous period was a meteorite with a mass of more than a trillion tons and a diameter of at least 10 kilometers. Scientists first identified this impact in 1980 from the worldwide layer of sediment deposited from the dust cloud that enveloped the planet after the impact. This sediment layer is enriched in the rare metal iridium and other elements that are relatively abundant in a meteorite but very rare in the crust of Earth. Even diluted by the terrestrial material excavated from the crater, this component of meteorites is easily identified. By 1990 geologists had located the impact site itself in the Yucatán region of Mexico. The crater, now deeply buried in sediment, was originally about 200 kilometers in diameter. This impact released an enormous amount of energy, excavating a crater about twice as large as the lunar crater Tycho. The explosion lifted about 100 trillion tons of dust into the atmosphere, as can be determined by measuring the thickness of the sediment layer formed when this dust settled to the surface. Such a quantity of material would have blocked the sunlight completely from reaching the surface, plunging Earth into a period of cold and darkness that lasted at least several months. The explosion is also calculated