Bước sóng ánh sáng có hiệu quả cao nhất đối với quang hợp là gì?

Cho \(A=\left\{ 0;1;2;3;4 \right\},\,B=\left\{ 2;3;4;5;6 \right\}.\)

Tập hợp \(\left( A\backslash B \right)\cup \left( B\backslash A \right)\) bằng

Cho các dữ kiện sau:

1. Mở đầu vai trò cách mạng chống đế quốc và phong kiến ở Trung Quốc;

2. Phong trào Ngũ tứ lôi cuốn đông đảo các tầng lớp xã hội tham gia;

3. Đánh dấu bước chuyển của cách mạng.

Hãy sắp xếp các dữ kiện trên theo đúng lôgíc.

Cho đoạn chương trình python sau:

Tong = 0

while Tong < 10:

    Tong = Tong + 1

Sau khi đoạn chương trình trên được thực hiện, giá trị của tổng bằng bao nhiêu?

Nghề nghiệp nào không được định hướng từ kiến thức Địa lí tự nhiên?

Read the following passage about The Key to a Fulfilling Life 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 18 to 22.

In today's fast-paced world, the importance of maintaining a healthy lifestyle cannot be overstated. (18)_________. For instance, those who engage in physical activities regularly often experience increased energy levels and improved mental well-being. 

Moreover, research shows that (19)_________. Healthy habits, such as drinking plenty of water and getting enough sleep, contribute significantly to overall wellness. 

(20)_________. It is essential to find activities that you genuinely enjoy, as this will make it easier to stay committed.

For example, many people find that yoga helps them manage stress while improving their flexibility. (21)_________. (22)_________.

In conclusion, making small changes to your daily routine can lead to significant improvements in your health and happiness. Embracing a healthy lifestyle is not just a trend; it’s a lifelong commitment to yourself.

Hình elip được ứng dụng nhiều trong thực tiễn, đặc biệt là kiến trúc, xây dựng, thiết bị nội thất,.. Một bồn rửa (lavabo) bằng sứ có hình dạng là một nửa khối tròn xoay khi elip quay quanh một trục (hình minh họa). Thông số kĩ thuật mặt trên của bồn rửa: dài x rộng là 660 x 380 mm,  giả thiết bồn rửa có độ dày đồng đều \(\delta \) là 20 mm.

Thể tích chứa nước của bồn rửa gần nhất với giá trị nào sau đây?

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. 

WinMart’s 10th Anniversary Celebration!

Join us at WinMart as we celebrate our 10th birthday with incredible deals just for you! (7)______your loyal support over the past decade, we’re thrilled to announce exclusive offers, discounts, and prizes across every department. From fresh groceries and home essentials to the latest tech(8)_____, we have everything you need at unbeatable prices.

Here's what you can enjoy:

• Up to 50% off on over 1,000 items, including fresh (9)___, electronics, and personal care products.

• Special "Buy One, Get Another at 10%" deals on selected products.

• The chance to win exciting gadgets, appliances, and gift vouchers in our lucky draw.

Don’t miss our interactive events, where customers can enjoy a large (10)______of free samples, fun games, and live demonstrations. Be sure to (11)______for our rewards program for additional discounts and collect points on every purchase.

Celebrate (12)______fantastic year with us at WinMart—visit any store or shop online to grab these limited-time deals!

Tính chất của cuộc chiến tranh thế giới thứ hai thay đổi được đánh dấu bằng sự kiện nào?

Mặt đứng của ngôi nhà:

Nhận định nào dưới đây là thể hiện quyền và nghĩa vụ của công dân về thuế?

Read the following passage about Renewable energy sources 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] Renewable energy sources, such as solar, wind, and hydroelectric power, have gained global popularity as a sustainable alternative to fossil fuels. [II] Unlike coal and oil, renewable energy generates electricity without releasing harmful emissions, making it a cleaner option for the environment (Jacobson et al., 2017). [III] However, despite the advantages of renewable energy, there are still notable challenges that need to be addressed for it to fully replace traditional energy sources (Ell Abban et al., 2014). [IV]

          One major advantage of renewable energy is its sustainability. Renewable resources, unlike fossil fuels, are naturally replenished and do not deplete over time. For instance, solar power harnesses energy from sunlight, which is virtually endless. In addition, renewable energy contributes to reducing greenhouse gas emissions, which helps combat climate change. Many countries are increasingly investing in renewable technologies to decrease their carbon footprint and meet international climate goals.

          However, renewable energy has certain limitations. One significant issue is its intermittent nature; for example, solar and wind power depend on weather conditions, making it difficult to generate a consistent power supply. This variability can disrupt the energy grid, which relies on a steady supply of electricity to meet demand. Another challenge is the high initial cost of setting up renewable energy facilities. Although prices have decreased in recent years, installing solar panels or wind turbines still requires substantial upfront investment (IRENA, 2019).

          Despite these challenges, advancements in technology are gradually making renewable energy more efficient and accessible. Improved energy storage systems, such as batteries, allow excess power generated during favourable conditions to be stored and used later, ensuring a more reliable energy supply. As technology and infrastructure improve, renewable energy may eventually.

The phrase "virtually endless" in paragraph 2 could be best replaced by ____.

Hội đồng nhân dân các cấp do những ai bầu ra?

High interest rates ______________ people in capitalist countries from borrowing money.

Từ thế kỉ X đến thế kỉ XV, hệ tư tưởng nào được tiếp nhận và nâng cao thành hệ tư tưởng thống trị trong xã hội phong kiến Việt Nam?

Read the following passage 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 5.

The process of sorting through the various holidays on offer and determining which is the best for you is inevitably complex and individual personality traits will determine the eventual decision. Some people undertake a Other process of extensive problem solving, in which information is sought about a series of products, (1) _________ . Other consumers with no patience to explore a variety of choices (2) _________ , for the sake of their convenience rather than trying to guarantee that they buy the best possible product. This is known as limited problem solving.

Many consumers engage in routinised response behaviour, in which choices change relatively little over time. (3) _________ . Also, some holidaymakers who have been content with a particular company or destination in the past may opt for the same experience again. 

Finally, some consumers will buy on impulse. (4) _________ .  It is, in fact, a pattern of behaviour that is becoming increasingly prevalent -- to the dismay of the operators, who then have less scope for forward planning and reduced opportunities to gain from investing deposits in the short term. (5) _________ , where 'distressed stock' needs to be cleared at short notice and this can be stimulated by late availability offers particularly.

(Adapted from The business of tourism)

Choose the best answer for number 2:

Người ta truyền cho khí trong xilanh nhiệt lượng 100 J. Khí nở ra thực hiện công 70 J đẩy pit-tông lên. Độ biến thiên nội năng của khí là