Đổi số đo cung \(\frac{5}{6}\text{rad}\) sang độ, phút, giây ta được?
Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
Dùng công thức: \(a\text{ rad = }\left( a.\frac{180}{\pi } \right){}^\circ \Rightarrow \frac{5}{6}\text{rad=}\left( \frac{5}{6}\frac{180}{\pi } \right){}^\circ \)
Chuyển đổi sang độ, phút, giây bằng máy tính.
Nhập biểu thức \(\frac{5.180}{6\pi }\) vào máy tính, sau đó ấn ta được kết quả là A.
Đáp án là A.
Bộ Đề Kiểm Tra Giữa Học Kì I - Toán 11 - (Năm học 2023 - 2024) - Các Trường THPT Trên Toàn Quốc cung cấp các câu hỏi trắc nghiệm giúp học sinh ôn tập và củng cố kiến thức đã học. Tài liệu bao gồm các bài tập từ cơ bản đến nâng cao, giúp học sinh rèn luyện kỹ năng phân tích và áp dụng kiến thức đã học vào thực tế.
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Ngày 20-11-1873, ở Bắc Kì đã diễn ra sự kiện lịch sử gì?
Read the passage carefully
1. Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.
2. The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.
3. On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.
4. What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.
5. As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.
Choose an option (A, B, C, or D) that best answers each question:
What is the word “potentially” in paragraph 4 closet in meaning to?
“Khi cách mạng đã lên rồi, Cắm trở về làng. Ồ, cái thằng bé gọi Cắm bằng chú. Coi kìa! Nó đã trở thành một thằng con trai lớn tồng ngồng. Cái lưng nó đã rộng bè bè và hơi cong lại như lưng một con thú rừng sắp vồ mồi. Tóc nó đen và dài. Và cặp mắt nó thì đích thị là cặp mắt của một người Mèo thực sự, xếch lên một chút, sáng như hai đốm lửa trong rừng khuya và sâu đến nao lòng những cô gái nào vô tình nhìn vào đấy. Mới đầu, nó không nhận ra Cắm. Cái thằng bé!”
(Nguyên Ngọc, Rẻo cao)
Chi tiết “Cặp mắt nó sáng như hai đốm lửa trong rừng khuya và sâu đến nao lòng những cô gái nào vô tình nhìn vào đấy” có nghĩa là gì?
Cho tập hợp A={2;4;6;9}; B={1;2;3;4}. Tập hợp A\B bằng tập hợp nào sau đây?
Thuế có những vai trò nào?
Đến năm 2020, guốc gia nào sau đây ở châu Phi thuộc thành viên của G20?
Sản phẩm chăn nuôi nào dưới đây không được dùng làm thực phẩm?
A human-like robot that can drive a car could one day be used as a chauffeur, though its creator admits that this may take at least 50 years.
Most driverless cars work very differently to a human driver, using artificial intelligence and custom mechanical systems to directly move the steering wheel and pedals. This approach is much more efficient and simpler than using a robot to drive, but it is also specially made for each particular car.
Kento Kawaharazuka at the University of Tokyo and his colleagues have developed a human-like robot, called Musashi, that can drive a car in the same way as a human. It has a human-like “skeleton” and “musculature”, as well as cameras in each of its eyes and force sensors in its hands and feet. Artificial intelligence systems work out what actions are needed to drive the car and react to events that often happen on roads such as traffic lights changing colour or a person stepping in front of the car. The robot can only perform a limited range of driving tasks at present, such as going forward in a straight line, taking a right- hand turn, and moving at speeds of around five kilometres per hour on non-public roads. “The speed of the pedal or the velocity of the car is not high. Also, the handling of the car is not fast compared to human beings,” says Kawaharazuka.
It seems that a robot at the controls of a car, operating in real traffic conditions and in total safety, is not something we are likely to see soon. As mentioned earlier, it could be decades before a robot could really step into the driver’s seat.
Which of the following would the author most likely support?
Trong các câu sau, câu nào không phải là mệnh đề toán học?
Nội dung nào sau đây không phải thuế trực thu?
Thị trường việc làm là nơi diễn ra sự thỏa thuận, xác lập hợp đồng làm việc giữa những đối tượng nào về việc làm, tiền lương và điều kiện làm việc?
Read thefollowing passage and mark the letter A, B, C or D on your answer sheet to indicate the option that bestfits each of the numbered blanksfrom 18 to 22.
Sustainable travelling, (18) ________, is becoming increasingly popular as people become more aware of the environmental impact of traditional travel. Travelling in a sustainable way means reducing carbon footprints and respecting local cultures and ecosystems. For instance, (19) _______ by choosing eco-friendly accommodations, using public transportation, or supporting local businesses that prioritize sustainability. However, there are also challenges, such as the tendency for some to prioritize convenience over environmental concerns, which can lead to unsustainable practices.
While sustainable travelling is often seen as a positive trend, (20) ________. Choosing to fly less frequently, for example, can significantly reduce carbon emissions, but it requires travelers to be mindful of alternative options. Furthermore, (21) ________, ensuring that they contribute positively to the local economy and culture. Travel companies also play an essential role in promoting sustainable tourism by offering packages that prioritize environmental conservation and social responsibility.
In conclusion, sustainable travelling is not just a passing trend but a long-term shift towards more responsible tourism. (22) _______, individuals, communities, and governments can together create an environment where sustainable travel becomes the norm rather than the exception. By doing so, we can ensure that future generations are able to enjoy the beauty of the world without compromising its preservation.
Cho mệnh đề chứa biến P(x): x2 – 1 là số lẻ. Xét tính đúng sai của P(2) và P(3).
Read the following advertisement/announcement and mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 1 to 6.
DISCOVER THE IPHONE 16
Looking for a smartphone that redefines innovation? The iPhone 16 is the perfect blend (1) ______
cutting-edge technology and sleek design. With its stunning Super Retina XDR display, you’ll experience vibrant colors and incredible detail. Whether you’re capturing photos or streaming videos, this device offers unparalleled performance. Want to enhance your (2) ______? The iPhone 16 features the powerful A16 Bionic chip, (3) ______ lightning-fast speeds for all your tasks. Plus, with its (4) ______, you can stay connected longer without worrying about (5) ______. With the introduction of Apple Intelligence and new AI-driven audio and visual features, Apple has once again pushed the boundaries of what a smartphone can do. Many of the predictions about the iPhone 16 were right on target, and the launch has received an enthusiastic response from the public. Apple has certainly raised the bar and has (6) ______ a new standard for the future of smartphones.Hàm số nào dưới đây có đồ thị không là đường hình sin?
Các nước có thu nhập ở mức thấp hiện nay hầu hết đều ở khu vực nào?
Read the following passage about lifelong learning 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.
[I] Lifelong learning is the ongoing, voluntary, and self-motivated pursuit of knowledge for personal or professional development (Knowles, 2020). [II] This concept emphasizes that learning does not stop after formal education, but rather continues throughout an individual's life, adapting to changing circumstances and needs. [III] In today’s fast-paced world, where technology and job markets evolve rapidly, lifelong learning has become increasingly essential. [IV]
One of the primary benefits of lifelong learning is its ability to enhance employability. Individuals who engage in continuous education are more likely to keep their skills relevant and competitive in the job market. According to a report by the World Economic Forum (2021), over 50% of employees will need reskilling due to technological advancements in the coming years. Lifelong learners are better equipped to adapt to these changes, making them more attractive candidates for employers.
Moreover, lifelong learning contributes to personal fulfillment and mental well-being. Engaging in new learning experiences can stimulate the brain, foster creativity, and improve cognitive function. Research indicates that individuals who pursue learning opportunities throughout their lives tend to report higher levels of happiness and life satisfaction (Smith & Johnson, 2019). Whether it is taking a course, learning a new language, or picking up a new hobby, the process of acquiring knowledge can be enriching and enjoyable.
In addition, lifelong learning promotes social engagement and community involvement. Participating in educational programs or community workshops can foster connections with others who share similar interests. This social aspect of learning can enhance one's sense of belonging and support networks, which are crucial for mental health (Jones, 2022).
Overall, lifelong learning is not just an individual responsibility; it requires support from educational institutions, employers, and communities to create an environment conducive to continuous education. By fostering a culture of learning, society can better prepare individuals for the challenges of the future and ensure that everyone has the opportunity to thrive.
(Adapted from The Importance of Lifelong Learning by Knowles, Smith, Johnson, and others)
The phrase "self-motivated pursuit" in paragraph 1 could be best replaced by ____.
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.
TO STAY HEALTHY, BEGIN AT HOME!
Let’s look at what we can do each day to improve our health and well-being.
Facts and Figures:
Over 30% of adults do not get enough physical activity, and (7)_______ spend hours sitting in front of screens, which affects both their physical and mental health.
Positive Actions!
(8)________ your intake of sugary or salty processed foods and opt for healthier alternatives like fruits or nuts.
Focus on (9)________ fresh, nutrient-rich foods rather than heavily processed ones. This not only nourishes your body but also helps the environment by reducing (10)________.
(11)_________ how busy your schedule is, dedicate at least 30 minutes a day to physical activity. Consistency is key!
Start Today!
Small changes can lead to big (12)_______. Make the choice to live a healthier, happier life!
Gọi \(S\) là diện tích của hình phẳng giới hạn bởi các đường \(y={{2}^{x}}\), \(y=0\), \(x=0\), \(x=2\) Mệnh đề nào dưới đây đúng?