Bà Lan được tư vẫn bổ sung chế độ ăn kiêng đặc biệt bằng cách sử dụng hai loại thực phẩm khác nhau là X và Y. Mỗi gói thực phẩm X chứa 20 đơn vị canxi, 20 đơn vị sắt và 10 đơn vị vitamin B. Mỗi gói thực phẩm Y chứa 20 đơn vị canxi, 10 đơn vị sắt và 20 đơn vị vitamin B. Yêu cầu hằng ngày tối thiểu trong chế độ ăn uống là 240 đơn vị canxi, 160 đơn vị sắt và 140 đơn vị vitamin B. Mỗi ngày không được dùng quá 12 gói mỗi loại. Khi đó:

Đâu là vi sinh vật có kiểu dinh dưỡng hóa dị dưỡng?

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.

Boosting Your Confidence

Looking to improve your self-esteem and feel more confident in your daily life? Here’s how you can make positive changes!

Confidence Facts: Studies show that only 35% of people report feeling confident in their abilities, while others ___(7)___ with self-doubt. Building confidence can help improve your performance at work and in social situations.

Tips to Boost Your Confidence:

● Set realistic goals! Start small and ___(8)___ yourself when you reach milestones.

● Surround yourself with positivity! Seek ___(9)___ supportive friends and colleagues to boost your self-esteem.

● Focus on your strengths! ___(10)___ dwelling on mistakes, concentrate on what you do well.

● Practice self-care! Taking time for yourself can ___(11)___ your mood and confidence levels.

● Keep learning! Gaining new skills helps ___(12)___ a sense of accomplishment.

Nhận định nào không đúng khi nói về sự khác nhau giữa sinh trưởng sơ cấp và sinh trưởng thứ cấp?

X và Y là hai nguyên tố halogen thuộc hai chu kì liên tiếp trong bảng hệ thống tuần hoàn. Hỗn hợp A có chứa 2 muối của X và Y với sodium.

Để kết tủa hoàn toàn 2,2 gam hỗn hợp A, phải dùng 150 mL dung dịch AgNO₃ 0,2M. Xác định hai nguyên tố X, Y.

Bố cục bài thuyết trình về một vấn đề xã hội cần đảm bảo điều gì?

Đối với bảng mã Unicode Tiếng Việt, mỗi kí tự được biểu diễn bởi bao nhiêu byte?

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.  

The phrase made up of in paragraph 3 could best be replaced by:

Cho các cấp độ tổ chức sống sau:

(1) Phân tử.

(2) Tế bào.

(3) Mô.

(4) Cơ quan.

(5) Cơ thể.

(6) Quần thể.

(7) Quần xã - hệ sinh thái.

Số cấp độ tổ chức sống cơ bản là

Chọn một từ/ cụm từ mà nghĩa của nó KHÔNG cùng nhóm với các từ/ cụm từ còn lại.

Gieo một con xúc xắc cân đối đồng chất 2 lần. Số phần tử của không gian mẫu là?

Loại thuốc thử nào được dùng để nhận biết sự có mặt của tinh bột trong tế bào?

Chọn câu sai khi nói về chất khí. Chất khí là chất có

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.

Fire Ant Festival 2024 - November 25

The upcoming Fire Ant Festival will be an incredibly exciting event, where you will be introduced (1)______ lively games and thrilling activities. In a vibrantly decorated outdoor space, visitors will have the chance to take part in traditional games such as tug-of-war, endurance competitions, and on-land boat racing. The highlight of the festival is the (2)______, where teams will compete to create (3)______ fire ant-inspired structures. Additionally, guests can enjoy breathtaking fire dance performances (4)______ by professional artists from various regions. Although named after a creature known to(5)______ a threat to many other species, the festival has proven to be safe for visitors. The festival is also an opportunity for visitors to try unique traditional folk games, which have been preserved and developed over many generations. Come join us to soak up the lively atmosphere, we promise(6)____ you unforgettable memories! 

Đâu không phải là nhận định nói về chức năng của thị trường?

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

He can shout even louder, but I won’t take any notice.

Read the following passage about human life expectancy 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 23 to 30. 

Nomophobia, short for "no-mobile-phone phobia," is a modern phenomenon that affects many people in today's digital age.

What is nomophobia? It is the irrational fear of being without one's mobile phone or being unable to use it. This condition can cause anxiety and distress, and it highlights the profound impact mobile devices have on our lives. The fear of losing or being separated from one's phone is a growing concern. Some common situations that trigger nomophobia include misplacing one's phone, running out of battery, or losing network signal. The fear intensifies when people imagine not having their phones to contact friends and family, access the internet, or use GPS for navigation.

Who easily suffers from nomophobia? Nomophobia is not limited to any age group and can affect individuals of all backgrounds. It often becomes evident when people experience panic or anxiety when they forget their phones at home or are unable to use them temporarily. Symptoms may include restlessness, rapid heartbeat, sweating, and a sense of insecurity.

The roots of nomophobia lie in the convenience and connectedness that mobile phones provide. These devices have become integral to our daily lives, serving as not just communication tools but also cameras, entertainment hubs, personal organizers, and more. This dependence on mobile phones can lead to a feeling of vulnerability when separated from them.

The pronoun “it” in paragraph 2 refers to ______.

Cơ chế của thị trường tồn tại các nhược điểm gì?

Tiệm cận xiên của đồ thị hàm số \(y=\frac{{{x}^{2}}-2x+3}{x+1}\) là: