Trong các phương pháp sau, phương pháp nhân giống vô tính nào có hiệu quả nhất hiện nay?

Đọc đoạn trích sau và trả lời câu hỏi:

Thị lẳng lặng theo hắn vào trong nhà, cái nhà vắng teo đứng rúm ró trên mảnh vườn mọc lổn nhổn những bụi cỏ dại. Thị đảo mắt nhìn xung quanh, cái ngực gầy lép nhô lên, nén một tiếng thở dài. Tràng xăm xăm bước vào trong nhà, nhấc tấm phên rách sang một bên thu dọn những niêu bát xống áo vứt bừa bộn cả trên giường dưới đất. Hắn quay lại nhìn thị cười cười:

- Không có người đàn bà, nhà cửa thế đấy!

Thị nhếch mép cười nhạt nhẽo . Tràng vỗ vỗ xuống giường đon đả:

- Ngồi đây!... Ngồi xuống đây, tự nhiên...

(Vợ nhặt, Kim Lân)

Chi tiết thị “nén một tiếng thở dài” cho thấy thái độ gì của người vợ nhặt?

Phương pháp bảo quản bằng khí quyển điều chỉnh là:

Read the following passage about humanoid robots 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.

Gary Hall Jr,_______(18), was an excellent swimmer from a young age. People were amazed at his incredible speed, and he competed at a very high level. However, life didn't make things easy for him and he had to overcome major challenges to achieve his success.

By the age of 22, Gary had already competed at the 1996 Summer Olympics in Atlanta, Georgia, USA,_______ (19). Gary was so happy and excited about his career. Then, when he was 24 years old, his doctor told him that he had a health condition called type 1 diabetes, and that he might not be able to continue swimming. Gary was devastated, but after a short break, he decided he wouldn't give up and continued to train with all his strength. ______(20)

A year later, at the 2000 Olympics in Sydney, Australia, Gary gave an amazing performance and won four more medals: two golds, a silver and a bronze. He continued his career and competed at the 2004 Olympics in Athens, Greece, where he won another gold and a bronze medal.

According to Gary, being too young in 1996 and having a health condition in 2000, _______(21). In 2004, people doubted him because they thought he was too old. However, he proved that they were wrong.

_______(22) . I admire him because he didn't give up, even when he was exhausted struggling to train and compete. With his determination, he achieved great success. From his story, we can all learn an important life lesson: "To be successful, you must try your best and believe in what you can do”.

Read the following passage about the Second Acts That Inspire 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.

Life often presents us with unexpected challenges that force us back to the drawing board. Whether due to personal setbacks, career changes, or unforeseen circumstances, the courage to begin again can lead to remarkable transformations. Many inspiring individuals have shown that it's never too late to reinvent oneself and pursue new dreams. Throughout history, countless people have overcome seemingly impossible situations through sheer determination.

[I] Take J.K. Rowling, for instance. Before becoming a literary sensation, she was a struggling single mother living on welfare. [II] Her determination eventually paid off when her books became a global phenomenon, proving that setbacks can become stepping stones to success. [III] This remarkable turnaround demonstrates how resilience and unwavering belief in oneself can overcome seemingly insurmountable obstacles. Despite facing depression and financial hardship, she never gave up on her dreams. [IV]

Colonel Harland Sanders' story is another testament to the power of starting anew. At the age of 65, when most people contemplate retirement, he found himself struggling financially after his restaurant failed. Instead of giving up, he traveled across America, sleeping in his car while pitching his chicken recipe to restaurant owners. His recipe for success wasn't just about the perfect blend of herbs and spices; it was about persistence and determination. After facing over 1,000 rejections, he finally established Kentucky Fried Chicken, which grew into a global empire. His unwavering spirit and dedication inspired generations of entrepreneurs worldwide.

These inspiring stories remind us that failure is not final, but rather a chance to redirect our path. Every setback carries the seed of an equal or greater opportunity, and sometimes the end of one chapter is simply the beginning of a better one. The key lies in having the courage to take that first step, even when the future seems uncertain. As these remarkable individuals have shown, it's never too late to rewrite your story and create a powerful second act. Their journeys teach us that persistence and courage ultimately lead to success.

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

Read the following passage about the Koromi trend 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]. If you’ve done any traveling at all, you’re likely quite aware that customs and etiquette differ from one culture to another: what may be perfectly innocuous in one place may be hideously offensive in another, and vice-versa. [II]. Granted, even if you haven’t traveled at all, you’re probably aware of the fact that certain types of behavior aren’t exactly acceptable in other countries: belching at the table may be a sign of gratitude in some places, but in most areas of North America and Europe, such a display will earn you a fair bit of ire. [III]. Whether you plan on traveling to any of the places listed below or just doing business with a foreign client, it’s important to educate yourself on the standards of politesse and etiquette beforehand-the last thing you want to do is offend someone with any ignorant, boorish behavior. [IV]. Here’s how to be polite in different countries.

When dealing with Japanese clients, be sure to dress fairly conservatively, and make sure that you bow lower than they do upon meeting them. Accept gifts with both hands and open them later, not in front of the giver, and never blow your nose at the dining table. Avoid asking and answering direct questions: it’s better to imply rather than ask, and to answer with vagueness during conversations.

In Kenya, when greeting someone older or of a higher status than yourself, grip their right wrist with your left hand while shaking it; it’s a sign of respect and deference. Do ask questions about their health, family, business etc. before getting to major topics, as skipping these niceties is seen as impolite. If sharing meals, do not begin eating until the eldest male has been served and starts to eat.

Turning down an alcoholic drink is considered terribly offensive in Russia, so it’s a good idea to fortify yourself with some greasy food before heading out for a meal with Russian or Ukrainian clients. Don’t smile at strangers or they’ll think you’re deranged, and when paying for items, place your money on the counter rather than trying to hand it directly to the cashier.

The word "they" in paragraph II refers to ____.

Đặc diểm của công nghệ trong mỗi giai đoạn lịch sử là gì?

Khi một máy bay đang bay trên bầu trời thì nó chịu tác dụng của các lực nào?

Trong tương lai, xu hướng phát triển ngành chăn nuôi của Việt Nam và trên thế giới là?

Cho tam thức bậc hai \(f\left( x \right)=-{{x}^{2}}-4x+5\). Tìm tất cả giá trị của \(x\) để \(f\left( x \right)\ge 0\).

Các cấp tổ chức của thế giới sống không bao gồm thành phần nào?

Công nghệ CRISPR-Cas9 được áp dụng trong y học để:

Cho hai tập khác rỗng $A = ( m - 1; 4]$; $B = ( -2;2m + 2 )$, $m \in \mathbb{R}$. Số thực $m$ để $A \cap B \ne \varnothing$ là

Hành động nào sau đây nên làm khi nhận được một tệp đính kèm có tên lạ trong thư điện tử từ người thân?

Xu hướng tuyển dụng lao động của thị trường lao động ở Việt Nam hiện nay thường chú trọng vào điều gì?

Nếu tại một điểm có 2 điện trường gây bởi 2 điện tích điểm Q₁ âm và Q₂ dương thì hướng của cường độ điện trường tại điểm đó được xác định bằng

Khi nói về ảnh hưởng của các nhân tố môi trường đến quá trình quang hợp ở thực vật, phát biểu nào sau đây sai?

Diễn thế sinh thái là quá trình biến đổi tuần tự, có tính quy luật của các quần xã sinh vật tương ứng với sự biến đổi của môi trường. Sơ đồ nào sau đây mô tả quá trình diễn thế nguyên sinh?

Năm 1077, quân dân nhà Lý kháng chiến thắng lợi hoàn toàn chống quân xâm lược nào?

Trong một nhóm A, bán kính nguyên tử của các nguyên tố:

Read the following passage about the Science in Service of Humanity 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.

Science has come out of its shell in laboratories to become a powerful force for human advancement. Modern scientific endeavors increasingly focus on addressing real-world challenges affecting communities globally. From developing vaccines that save millions to creating technologies connecting people across continents, science serves humanity in countless ways. This shift represents a fundamental evolution in how we perceive scientific progress—not merely academic pursuit but a practical tool for improving lives and solving pressing problems.

[I] Medical breakthroughs exemplify how science directly benefits humanity. [II] For instance, gene therapy offers hope for those with inherited conditions, while artificial intelligence helps diagnose diseases earlier and more accurately. [III] These advancements didn't happen overnight; scientists had to burn the midnight oil for years before achieving success. [IV] Their perseverance demonstrates that when science targets humanitarian goals, results can transform society profoundly.

Environmental science has emerged as another crucial domain where laboratory work translates into human welfare. Climate scientists provide data informing policy decisions affecting billions. Conservation biologists develop strategies to protect biodiversity, ensuring future generations benefit from natural resources. Agricultural researchers create drought-resistant crops helping communities withstand changing climate conditions. Despite these contributions, environmental science faces challenges including funding limitations, political resistance, and urgency of addressing accelerating climate change. Nevertheless, dedicated scientists continue their work, recognizing environmental health directly impacts human wellbeing.

The future of science in service of humanity looks increasingly collaborative and inclusive. Modern approaches incorporate diverse perspectives, including indigenous knowledge and community participation. Citizen science projects engage non-professionals in data collection, democratizing the scientific process. Open-access publishing makes research findings available to anyone with internet access, not just wealthy institutions. These developments suggest science's greatest potential lies in becoming more accessible and responsive to human needs. As we face complex global challenges, from pandemics to climate change, science serving humanity offers our best hope for a sustainable future.

The phrase “come out of its shell” in paragraph 1 could be best replaced by _________.