Tia hồng ngoại và tia tử ngoại có tính chất chung nào sau đây:

Read the passage below and choose A, B, C or D to answer each question from 636 - 640.

Many of the most damaging and life-threating types of weather-torrential rains, severe thunderstorms, and tornadoes-begin quickly, strike suddenly, and dissipate rapidly, devastating small regions while leaving neighboring areas untouched. One such event, a tornado, struck the northeastern section of Edmonton, Alberta, in July 1987. Total damages from the tornado exceeded $250 million, the highest ever for any Canadian storm. Conventional computer models of the atmosphere have limited value in predicting short-live local storms like the Edmonton tornado, because the available weather data are generally not detailed enough to allow computers to discern the subtle atmospheric changes that precede these storms. In most nations, for example, weather balloon observations are taken just once every twelve hours at locations typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events.

Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or “Nowcasts”, was not feasible. The cost of equipping and operating many thousands of conventional weather stations was prohibitively high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were insurmountable. Fortunately, scientific and technological advances have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observation over large regions at a relatively low cost. Communications satellites can transmit data around the world cheaply and instantaneously, and modern computers can quickly compile and analyzing this large volume of weather information. Meteorologists and computer scientists now work together to design computer programs and video equipment capable of transforming raw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, Nowcasting is becoming a reality.

With which of the following statements is the author most likely to agree?

Loại phần mềm độc hại nào sau đây được kích hoạt cùng chương trình máy tính?

Đâu không phải là vai trò của sinh vật tự dưỡng trong sinh giới?

Cây dài ngày là cây có đặc điểm ra sao?

Read the following passage about the Exploring The Universe 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.

Science is a vast and fascinating field that seeks to understand the natural world and the universe beyond[I]. It encompasses various disciplines, including physics, chemistry, biology, and astronomy[II]. Each of these areas contributes to our understanding of complex phenomena, [III]. For instance, scientific research has led to significant breakthroughs in medicine, renewable energy, and environmental conservation[IV]. In this essay, we will explore the impact of science on our lives, particularly focusing on space exploration.

One of the most intriguing aspects of science is space exploration. Humans have always looked to the stars, wondering what lies beyond our planet. The launch of satellites and manned missions has allowed us to gather valuable information about the cosmos. For example, NASA's Mars Rover has provided insight into the potential for life on other planets. Through meticulous research and data collection, scientists can analyze soil samples and atmospheric conditions, paving the way for future explorations.

Space exploration also raises critical questions about our existence and the future of humanity. As we continue to advance technologically, the prospect of colonizing other planets becomes more plausible. This endeavor could serve as a solution to the challenges we face on Earth, such as overpopulation and resource depletion. However, ethical considerations must guide these efforts. We must ensure that we do not repeat the mistakes of history, such as the exploitation of natural resources and indigenous populations.

Moreover, scientific advancements have enabled us to develop technologies that enhance our understanding of the universe. Telescopes and space probes allow us to observe distant galaxies, study black holes, and uncover the mysteries of dark matter. Each discovery leads to new questions, further fueling our curiosity and drive for knowledge. The concept of the multiverse, for instance, challenges our understanding of reality and pushes the boundaries of scientific thought.

In addition to exploring the universe, science plays a crucial role in addressing pressing issues on Earth. Climate change, for example, is a significant concern that scientists are actively investigating. Through climate models and data analysis, researchers can predict future trends and propose solutions to mitigate the effects of global warming. Public awareness and education are essential in fostering a collective response to environmental challenges.

As we reflect on the wonders of science, it is clear that its contributions extend far beyond mere knowledge acquisition. Science empowers us to make informed decisions about our health, environment, and future. By fostering a culture of curiosity and critical thinking, we can inspire future generations to continue exploring the unknown.

Where in paragraph 1 does the following sentence best fit?

enabling advancements that improve our daily lives

Trong thí nghiệm về hoạt động của tim, người ta thường hủy tủy của ếch. Nếu ta hủy não thay vì hủy tủy của ếch có được không? Tại sao?

Cho số Avogadro N_A = 6,02.10²³ hạt/mol. Số neutron có trong 3,5 g Carbon ${}_6{}^{14}C$ có giá trị bằng

Trong tình huống dưới đây, chủ thể nào đã không vi phạm quy định pháp luật về bình đẳng giới trong lĩnh vực chính trị?

"Được biết Hội phụ nữ xã X thành lập đội công tác nhằm tuyên truyền, tư vấn cho cộng đồng về chăm sóc sức khỏe sinh sản, kế hoạch hóa gia đình, anh M và chị V đã đăng kí tham gia. Tuy nhiên, chị K (Hội trưởng Hội phụ nữ xã X) đã gạch tên anh M ra khỏi danh sách ứng viên vì chị cho rằng: công việc này không phù hợp với nam giới".

Phiên bản Windows nào là phiên bản đầu tiên có giao diện đồ họa?

Sau khi thực hiện đoạn chương trình, giá trị của a và b lần lượt là?

Cho sơ đồ chuyển hoá:

Từ sơ đồ trên, hãy cho biết phát biểu nào sau đây không đúng?

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 the following questions from 13 to 17 

a. Pete: Oh, I’m so sorry, Anna! I didn’t realize it was a problem. I’ll step outside right away.

b. Anna: Excuse me, Pete, but the smell of smoke in this room is really bothering me. Could you please not smoke here?

c. Anna: Thank you, I appreciate it. It’s just that the smoke makes it hard for me to breathe.