chọn đúng hoặc sai với mỗi ý a), b), c), d)

Một lọ giác hơi (được cơ sở điều trị bằng phương pháp cổ truyền sử dụng) do chênh lệch áp suất trong và ngoài lọ nên dính vào bề mặt da lưng của người bệnh, điều này được tạo ra bằng cách ban đầu lọ được hơ nóng bên trong và nhanh chóng úp miệng hở của lọ vào vùng da cần tác động. Tại thời điểm áp vào da, không khí trong lọ được làm nóng đến nhiệt độ $t={353}^{°}\text{C}$ và nhiệt độ của không khí môi trường xung quanh là $t_0=27,0^{°}\text{C}.$ Áp suất khí quyển \({P_0} = 1,{0.10^5}\;{\rm{Pa}}.\) Diện tích phần miệng hở của lọ là \(S = 28,0\;{\rm{c}}{{\rm{m}}^2}.\) Bỏ qua sự thay đổi thể tích không khí trong bình (do sự phồng của bề mặt phần da bên trong miệng hở của lọ).

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 – VOLUNTEER TODAY!

Let’s look at how volunteering can change lives and improve our community.

Facts and Figures:

Did you know that millions of people volunteer every year? Volunteers help in hospitals, schools, animal (7)________, and community centers. They bring people together, improve lives, and support those in need. Studies (8)________ that people who volunteer feel happier and more connected to their (9)________.

Positive Actions!

●      Find a cause you care about. (10)_________ it’s helping children, protecting the environment, or caring for animals, there are many ways to get involved.

●      Start small and be consistent. Even a few hours a month can make a big (11)________. Volunteering regularly helps build trust and strong connections with those you help.

●       Learn new skills and meet (12)________ people. Volunteering is a great way to gain experience and make friends, all while helping others.

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:

a. Second, people should protect rivers, forests, and wetlands from pollution or damage.

b. First, planting trees in local areas improves air quality and gives shade on hot days.

c. Trees also provide homes for birds and other small animals.

d. For example, communities can organize clean-up events to remove plastic bottles from rivers.

e. Protecting nature is an important responsibility for every person.

Công nghệ nào sau đây ảnh hưởng trực tiếp đến việc ứng phó với biến đổi khí hậu?

Trong không gian \(Oxyz\), phương trình đường thẳng đi qua hai điểm \(A\left( 1\,;2\,;3 \right),B\left( 5\,;4\,;-1 \right)\) là:

I have left my book in_________kitchen and I would like you to get it for me.

Choose A, B, C or D that has the CLOSEST meaning to the given pair of sentences in each question.

He finally achieved his goal of becoming a published author. It required years of dedication and hard work.

Số AO và số electron tối đa trong lớp electron thứ n (n ≤ 4) lần lượt là

Lớp 11B có 40 học sinh trong đó có 25 nam và 15 nữ. Hỏi có bao nhiêu cách chọn ra một học sinh đi tham dự Đại hội Đoàn trường?

Nhập cư tạo động lực cho sự phát triển kinh tế của Hoa Kì nhờ lợi thế lớn nhất nào sau đây?

Hình vẽ nào sau đây có phần không bị gạch minh họa cho tập $A=\left\{ x\in \mathbb{R}\left| \left| x \right|\ge 1 \right. \right\}$?

Bản đồ có vai trò như thế nào trong lĩnh vực quân sự?

Hệ thống sông lớn duy nhất nào ở nước ta có dòng chảy đổ sang Trung Quốc?