Trong một dao động điều hòa, đại lượng nào sau đây không phụ thuộc vào điều kiện ban đầu?

Cấu tạo ngoài nào sau đây của lá thích nghi với chức năng hấp thụ được nhiều ánh sáng?

Read the following advertisement 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 1 to 6. 

ANNOUNCEMENT OF A GRADUATION PARTY

Join us for an ___(1)___ Graduation Party this Friday evening!

Celebrate your achievements on a night ___(2)___ laughter, music, and memories. 

From a lively dance floor to interactive games, we've got it ___(3)___! Indulge in delicious treats and capture ___(4)___ moment at our photo booth.

Let's ___(5)___ this milestone remarkable! Don't miss out on the festivities – be there to share the joy and ___(6)___ your success!

It is _______________ that eating chocolate is good for your body whenever you feel sad.

Nội dung nào dưới đây không phản ánh đúng về ý nghĩa của tri thức lịch sử?

Đâu là nhận định thể hiện các đặc điểm của thị trường?

Trong mặt phẳng toạ độ \(Oxy\), cho tam giác \(ABC\) có \(A( - 1; - 5),B(5;2)\) và trọng tâm là gốc toạ độ. Toạ độ điểm \(C\) là?

Read the following passage about the Pathways from Today's Actions to Tomorrow's World 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.

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.

[I] Technological innovation represents our greatest hope for addressing environmental challenges by 2050. [II] Renewable energy sources like solar and wind are becoming increasingly affordable, potentially replacing fossil fuels entirely within thirty years. [III] Electric vehicles may dominate transportation networks, while vertical farming could transform food production in urban areas. [IV] However, these technological solutions must be developed and deployed equitably to avoid creating new disparities between wealthy and developing nations.

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.

The word “their” in paragraph 3 refers to _________.

Hiện nay, dân số Hoa Kì đứng thứ mấy trên thế giới?

Loại đột biến nào sau đây không làm thay đổi hàm lượng vật chất di truyền trên NST?

Hàm số nào dưới đây là hàm số lẻ?

In the past, a lot of countries denied having contributed to global warming

It is disruptive and discourteous to carry on a phone conversation during dinner or while the family is watching a program on TV.

Chủ thể tiêu dùng cần phải có trách nhiệm gì khi tham gia vào hoạt động kinh tế?

Choose the correct answer to complete each of the following sentences.

She will be exhausted __________ she stops working.

Tìm m để hàm số y = $\frac{x}{x-m}$ xác định trên khoảng (0; 5)?

Một loại nguyên tử hydrogen có cấu tạo đơn giản nhất, chỉ tạo nên từ 1 electron và 1 proton. Những phát biểu nào sau đây là đúng khi nói về nguyên tử hydrogen?

Cho hai tập hợp $A=\left\{ 1;2;3;7 \right\}\text{,}\ B=\left\{ 2;4;6;7;8 \right\}$. Mệnh đề nào sau đây đúng?

Trong những năm 1918 - 1921, nhân dân Nga Xô viết đã tiến hành