Trong thí nghiệm Young về giao thoa ánh sáng, nếu tăng khoảng cách hai khe lên gấp đôi thì khoảng vân trên màn sẽ tăng hay giảm mấy lần?

The driver was ________.

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.

Which of the following is OPPOSITE in meaning to exterior in paragraph 1?

Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

Dịch mật có vai trò quan trọng trong việc tiêu hóa và hấp thụ chất nào sau đây?

Bảo vệ Tổ quốc không bao gồm các việc làm nào sau đây?

Thị trường lúa gạo, thị trường dầu mỏ, thị trường tiền tệ, thị trường chứng khoán, thị trường bất động sản,..thuộc loại thị trường nào?

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

Thuế có những vai trò nào?

Find the word which has a different sound in the part underlined.

Read of 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.

Beyond Success: The Human Stories Behind Great Achievements

The Journey Behind Every Triumph

While some people focus only on achievements, (7)_________ understand that the path to success is filled with challenges and growth opportunities.

Great innovators often (8)_________ their mentors who guided them through difficult times. The resilience shown by successful people becomes their greatest strength in times of adversity. (9)_________ numerous failures, many accomplished individuals persevered until they reached their goals. Their determination and perseverance serve as (10)_________ for aspiring achievers worldwide. A (11)_________ of successful people attribute their achievements to the support of their families and friends.

Behind Every Success Story

Success is never just about the final achievement. It's about the human journey—the struggles, doubts, failures, and moments of (12)_________ that shape not just careers but character. Join us as we explore the personal stories behind some of the most remarkable achievements of our time.

Khi bị đứt tay, sẽ có những hệ nào tham gia để bảo vệ cơ thể?

Tập nghiệm của bất phương trình ${{\left(\sqrt{5}+2 \right)}^{x-1}}\le {{\left(\sqrt{5}-2 \right)}^{x-1}}$ là

Hành vi nào sau đây chưa thực hiện pháp luật về ngân sách nhà nước?

Phương trình ${{\log }_{2\,017}}\left(13x+3 \right)={{\log }_{2\,017}}16$ có nghiệm

Hai điện tích điểm có độ lớn không đổi được đặt trong cùng một môi trường có hằng số điện môi là $\epsilon$, nếu tăng khoảng cách giữa hai điện tích lên 2 lần thì lực tương tác giữa chúng sẽ

Màng sinh chất lõm vào hình thành eo thắt phân chia thành hai tế bào là đặc điểm của quá trình gì?

Cho hàm số $y=f\left(x \right)$ có đạo hàm trên đoạn $\left[ -1;2 \right]$ thỏa mãn $f\left(-1 \right)=3$, $f\left(2 \right)=-1$. Giá trị của tích phân $\displaystyle\int\limits_{-1}^{2}{{f}'\left(x \right)\mathrm{d}x}$ bằng