Trong môi trường kiềm xảy ra sự chuyển hoá fructose thành glucose theo cân bằng:

${\text{HOCH}}_2{\left[\text{CH}\right(\text{OH}\left)\right]}_3{\text{COCH}}_2\text{OH}\stackrel{{\text{OH}}^{-}}{\rightleftharpoons }{\text{HOCH}}_2{\left[\text{CH}\right(\text{OH}\left)\right]}_4\text{CHO}$

 

Do đó, fructose vẫn tham gia phản ứng tráng bạc, mặc dù phân tử không có nhóm chức aldehyde.

Phát biểu nào sau đây là đúng?

 Mặt bằng là gì?

Yếu tố nào có khả năng hòa tan và vận chuyển các chất trong cây?

Ở thủy tức, thức ăn được tiêu hóa bằng hình thức nào?

I washed the dishes yesterday, but I _____________ no time to do it today.

Trong hệ tọa độ \(Oxy\), cho \(\overrightarrow u = \frac{1}{2}\overrightarrow i - 5\overrightarrow j \). Khi đó \(\overrightarrow u = \left( {a;b} \right)\). Tính \(a + b\).

Chủ đề của tác phẩm Chuyện chức phán sự đền Tản Viên là:

Xác định một từ/cụm từ SAI về ngữ pháp/hoặc ngữ nghĩa/logic/phong cách.

Du khách muốn tham quan, khám phá, ngắm dòng sông Hương giang thì hãy ngồi thuyền rồng và thời điểm lý tưởng là vào mùa thu hoặc mùa xuân, lúc này thời tiết ở Huế khá dễ chịu.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27.

People come to this small country for many reasons. They can admire spectacular (23)_________ meet friendly natives, and enjoy a vibrant arts scene. Some are searching for their family (24) _________ or others just want to get away from it all and, digging up old memories from their English Lit class of gallant heroes engaging in larger-than-life struggles, their minds wander to faraway lands, to somehow familiar yet different destinations. Why not go to Scotland? But what kind of country are they coming to and what should they expect once they get there? Scotland (25) _________ of an area of 30, 418 square miles - so it's a fairly compact and "doable" country - with a population of about five million people - not too small, not too big. It is one of three countries that form the political (26) _________ called Great Britain, the other two being, of course, England and Wales, which, along with their fourth partner, Northern Ireland, becomes the United Kingdom. Scotland is bordered on three sides by water and on its fourth by England, which has had both its advantages and disadvantages. Geographically speaking, the country can be divided into three broad areas, the Southern Uplands, the Central Lowlands, and the Highlands. Although the rugged Highlands (27) _________ about two-thirds of the land area, the vast majority of the population lives in the Central Belt between Glasgow, Scotlands largest city, and Edinburgh, Scotland's capital.

Các trung tâm thương mại lớn phân bố tập trung ở vùng

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.

MAKE A DIFFERENCE IN THE LIVES OF ANIMALS!

Animal shelters depend on the kindness of volunteers to care for homeless animals.

♻ Why Volunteer?

Many animals in shelters have been abandoned by their owners while (7) _______are rescued from dangerous situations. By volunteering, you can help provide food, medical care, and comfort to animals in need.

♻ How You Can Help:

Spend time with the animals, ensuring they feel loved and safe. Assist with cleaning and maintaining shelter facilities, as failing to tidy up messes can (8) _______ unhealthy conditions. Help raise awareness about adoption programs and the importance of reducing the (9) _______ of homeless animals. Rather than adopt a new pet without preparation, educate potential owners about proper care as many animals suffer neglect and abandonment (10) _______ irresponsible ownership. Together, we can ensure that every animal has a chance at a better (11) _______.

♻ Get Involved Today!

Volunteering doesn’t just benefit the animals - it gives you a sense of fulfillment and the opportunity to meet others who share the same (12) _______.

Hoạt động trao đổi đóng vai trò kết nối sản xuất với tiêu dùng nhằm đáp ứng nhu cầu cho đối tượng nào?

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.

ANNOUNCEMENT OF CHINESE SPEAKING CONTEST

The (7) ___ would like to announce:

● We ___(8)___ a Chinese Speaking Competition on June 01.

● All students ___(9)___ in speaking Chinese can take part in this exciting contest!

● Express your ideas confidently, ___(10)___ you build your self-assurance in using Chinese.

● Get ready to share your thoughts ___(11)___ our friendly atmosphere.

● Keep an eye out for more details ___(12)___ to participate in the contest!

Xác định một từ/cụm từ SAI về ngữ pháp/hoặc ngữ nghĩa/logic/phong cách.

Với từng cá nhân, AI rất hữu ích trong việc thay đổi cách dạy và cách học của giáo viên và học sinh, nhưng việc nỗ lực biến các công cụ này thành công cụ hỗ trợ chính thức trong các cơ quan hành chính chưa đem lại kết quả khả quan.