Tính chất nào sau đây không phải là của phân tử?
Chuyển động hỗn loạn, không ngừng.
Có lúc đứng yên, có lúc chuyển động.
Chuyển động càng nhanh thì nhiệt độ của vật càng cao.
Tồn tại lực tương tác giữa các phân tử.
Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
Các phân tử chuyển động không ngừng, chuyển động này được gọi là chuyển động nhiệt. Vì vậy đáp án B là sai.
Bộ Đề Kiểm Tra Tham Khảo Giữa Học Kì I - Môn Vật lí 12 - Kết Nối Tri Thức được biên soạn và tổng hợp những kiến thức cơ bản đã học nhằm giúp học sinh củng cố kiến thức, đánh giá năng lực, và chuẩn bị tốt hơn cho các kỳ thi quan trọng sắp tới.
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As we stand at the crossroads of environmental decision-making, the actions we take today will shape our world in 2050. Scientists warn that we're skating on thin ice with current consumption patterns and carbon emissions. Global temperatures could rise by 2-4 degrees Celsius unless significant changes occur within the next decade. Many countries have pledged to achieve carbon neutrality by 2050, but these promises require immediate implementation. Individual choices in transportation, energy usage, and consumption can collectively influence whether future generations inherit a sustainable planet or face severe climate consequences.
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Social structures will undergo dramatic transformation by 2050 as demographic shifts reshape communities worldwide. Aging populations in developed countries will necessitate new approaches to healthcare, retirement, and social support systems. Meanwhile, climate migration may force millions to relocate from vulnerable coastal and drought-prone regions. Education systems must evolve to prepare our students for jobs that don't yet exist, emphasizing their adaptability and lifelong learning. Cities will need to become more resilient, incorporating green spaces and sustainable infrastructure to support growing populations.
Economic models must fundamentally change by 2050 to balance prosperity with environmental responsibility. The traditional focus on continuous growth may shift toward measuring success through wellbeing indicators rather than GDP alone. Circular economy principles will likely replace linear production models, with products designed for reuse and recycling. Resource-sharing platforms may become more prevalent, reducing individual consumption while maintaining living standards. Companies implementing genuinely sustainable practices will thrive, while those clinging to environmentally harmful methods may disappear entirely. The transition presents both challenges and opportunities for businesses willing to embrace innovation and sustainability.
Where in paragraph 2 does the following sentence best fit?
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Bào quan nào sau đây thực hiện nhiệm vụ quang hợp của cây?
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Trong quá trình làm tương, người ta sử dụng loại vi sinh vật nào?
Theo nguồn động lực làm ô tô chuyển động, ô tô được chia làm?
Hoạt động tiêu dùng bao gồm mấy loại chính?
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The Post-it Note began as a mistake that seemed useless at first. In 1968, Spencer Silver tried making a strong glue for 3M company but created a weak one instead that didn't stick permanently. Nobody knew what to do with this disappointing result for several years. Then his colleague Arthur Fry realized this "failure" could make perfect bookmarks that wouldn't damage pages when removed. This weak adhesive eventually became one of the most popular office products worldwide, changing how people work.
In cooking, many favorite foods came from kitchen errors and quick substitutions. Ruth Wakefield invented chocolate chip cookies when she ran out of baker's chocolate and used broken pieces of semi-sweet chocolate instead. She thought they would melt completely in the dough, but they kept their shape during baking. Potato chips were created when chef George Crum made extremely thin potatoes to annoy a customer who repeatedly complained about thick fries. Surprisingly, the customer loved them and ordered more!
These fascinating stories teach us that mistakes can lead to new opportunities and unexpected innovations. Thomas Edison said about his many failed light bulb attempts, "I haven't failed. I've just found 10,000 ways that don't work." This positive attitude shows we should see errors as valuable learning chances. Smart people don't fear making mistakes in their work; they fear missing opportunities to learn from them and discover something amazing.
In which paragraph does the writer mention a failed attempt to create strong glue led to a useful product?
Mệnh đề nào sau đây đúng?
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