Phương án nào sau đây nêu đúng dạng nhị phân của số 57?

Read the following passage about effective English language learning 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 from 18 to 22.

Learning a new language, especially English, can be both challenging and rewarding. To maximize your language learning potential, it's essential to adopt effective strategies. ___(18)___. By understanding your learning style and setting clear goals, you can create a personalized learning plan.

One of the most effective ways to improve your English is through consistent practice. ___(19)___. This could involve reading books, articles, or news, watching movies or TV shows, or listening to English songs or podcasts.

To enhance your speaking skills, it's crucial to engage in regular conversation practice. ___(20)___. Joining language exchange groups or finding a language partner can provide opportunities to practice speaking and receive feedback.

While practice is essential, it's equally important to learn correct grammar and vocabulary. ___(21)___. Using grammar books, online resources, or language apps can help you master the rules of English grammar.

In conclusion, effective English language learning requires a combination of consistent practice, strategic learning, and a positive mindset. ___(22)___. By embracing these strategies, you can achieve your English language goals and open up new opportunities.

Read the following passage 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.

Biting into a ripe, juicy fruit brings a smile to many people’s faces. But eating that same fruit a week before it is ripe probably wouldn’t be as enjoyable! Unripe fruits are often hard and bitter, but that serves a purpose. The hard exterior of an unripe fruit protects the developing seed inside. After a seed fully develops inside the fruit, the fruit changes color, softens, and gets sweeter to become more attractive to animals and humans. These organisms eat the fruit and spread its seeds, ensuring the plant’s survival and regrowth.

But how does a fruit ripen? The ripening process involves many complex chemical reactions. When a fruit ripens, it goes through a chemical change. A chemical change happens when bonds within molecules break, and the atoms that once formed them regroup into new molecules. Chemical changes are irreversible. Once a fruit ripens, it cannot become unripe again.

One molecule responsible for this chemical change is ethylene. Ethylene (C2H4) is a colorless gas made up of carbon and hydrogen atoms. (I). It is a naturally occurring molecule in the atmosphere. (II). It is also an important plant hormone. (III). Plants release ethylene through the growing tips of roots, flowers, and ripening fruit. (IV). Although ethylene serves other purposes in plants, one of its main purposes is to trigger the chemical reactions that cause fruits to ripen. As the fruit matures, oxygen in the air helps stimulate the production of ethylene. This ethylene production is a signal that begins fruit ripening. For that reason, unripe fruits have low levels of ethylene, while ripe fruits have higher levels of ethylene. Most fruits produce ethylene and respond to ethylene in the atmosphere.

Although fruits require ethylene to ripen, different types of fruits respond to this molecule in two distinct ways: non-climacteric fruits and climacteric fruits. Non-climacteric fruits do not ripen after harvesting. They produce very little ethylene of their own. Climacteric fruits, on the other hand, continue to ripen after they are picked. These fruits produce a large amount of ethylene. Climacteric fruits can also speed up the ripening process of other fruits nearby since they release high levels of ethylene into the air.  

According to the passage, which of the following statements is TRUE?

Hiệu suất của một quá trình chuyển hóa công được kí hiệu là H. Vậy H luôn có giá trị là

Nghiệm của phương trình \(\sin x+\cos x=0\) là: 

Trong các tiền đề sau đây, tiền đề nào là quan trọng nhất dẫn đến cách mạng bùng nổ và thắng lợi ở Nga năm 1917?

Vì sao Nhà nước phải thu thuế?

Khi sản phẩm chuyển hoá được tạo ra đủ với nhu cầu của tế bào, cơ chế nào sau đây được diễn ra để điều hoà quá trình chuyển hoá vật chất?

Chọn câu phát biểu đúng. 

Phát biểu nào sau đây không đúng với các nước phát triển?

Công việc nào sau đây không phụ thuộc vào các công việc của môn thống kê ? 

Cho a, b là hai đường thẳng song song với nhau. Chọn khẳng định sai:

Which of the following is TRUE as the result of global warming?

Cho các cân bằng hóa học sau:

(a) H₂ (g) + I₂ (g) ⟷ 2HI (g)

(b) 2NO₂(g) ⟷ N₂O₄ (g)

(c) N₂(g) + 3H₂(g) ⟷ 2NH₃(g)

(d) 2SO₂(g)+ O₂(g) ⟷ 2SO₃(g)

Ở nhiệt độ không đổi, khi thay đổi áp suất chung của mỗi hệ cân bằng, cân bằng hóa học nào không bị chuyển dịch?

Nguồn thu chủ yếu nhất của ngân sách nhà nước là gì?

Nhận định nào sau đây đúng khi nói về vị trí địa lí Việt Nam?

Công nghệ nào sau đây được ứng dụng trong chăn nuôi công nghệ cao?

Đối tượng nào trong giao diện chỉnh sửa video cho phép thêm văn bản vào dự án?

Giá trị của giới hạn \(\mathop {\lim }\limits_{x \to 3} \sqrt {\frac{{9{x^2} - x}}{{\left( {2x - 1} \right)\left( {{x^4} - 3} \right)}}} \) là