Cho tập $M=\left\{ \left. \left( x;y \right) \right|x,y\in \mathbb{R} \right.$ và $\left. {{x}^{2}}+{{y}^{2}}\le 0 \right\}.$ Số phần tử của tập $M$ là

Read the following passage about education in Nepal 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. 

A few years ago, amid a record drought, scientists noticed something odd. A few of California’s giant sequoias inside Sequoia and Kings Canyon National Parks were dying in ways no one had ever documented – from the top down. When researchers climbed into the canopies, they discovered that beetles had bored into a few branches. By 2019, at least 38 of the trees had died – not a large number, but "concerning because we’ve never observed this before,” says Christy Brigham, the park’s chief of resource management.

Scientists had assumed that stately sequoias, with their bug-repelling tannins, were immune to dangerous pests. Worried experts are investigating whether some mix of increased drought and wildfire, both worsened by climate change, have now made even sequoias susceptible to deadly insect invasions.

If so, these ancient sentinels would be just the latest example of a trend experts are documenting around the world: Trees in forests are dying at increasingly high rates—especially the bigger, older trees. According to a study in the journal Science, the death rate is making forests younger, threatening biodiversity, eliminating important plant and animal habitat, and reducing forests’ ability to store excess carbon dioxide generated by our consumption of fossil fuels. [A]

There is no single direct cause. Decades of logging and land clearing play a role, scientists say. But increasing temperatures and rising carbon dioxide from the burning of fossil fuels have significantly magnified most other causes of tree death. Scientists are documenting longer and harsher droughts, more severe outbreaks of insects and disease, and increasingly catastrophic wildfires.

With 60,000 known tree species on Earth, those shifts are playing out differently across the planet. In central Europe, for instance, “You don’t have to look for dead trees,” says Henrik Hartmann, with Germany's Max Planck Institute for Biogeochemistry. “They’re everywhere.” In one recent year, following a week of excessive heat, hundreds of thousands of beech trees dropped their leaves. Even in colder regions, “You get a couple of hot years and the forests are suffering,” says Hartmann. “There are individual species that are being driven beyond the threshold of what they can handle.” [B]

Just last year, massive fires marched through a dry Australia, smoldered across 7.4 million acres in northern Siberia, and focused the world’s attention on blazes in the Amazon.

The consequences of all these changes around the world are still being assessed. The first national look at tree mortality in Israel showed vast stretches disappearing, thanks largely to scorching heat and wildfires. [C] In a country largely blanketed by stone and sand, forests mean a great deal. Trees support nests for eagles and habitat for wolves and jackals. They hold soil with their roots. [D]

“We’re dealing with a very tough situation. It’s a race to the unknown,” says Tamir Klein at the Weizmann Institute of Science.

What does ‘these ancient sentinels’ in paragraph 3 refer to?

Trong dao động điều hòa của một vật thì gia tốc và vận tốc tức thời biến thiên theo thời gian

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 28 to 34. Foot-racing is a popular activity in the United States. It is seen not only as a competitive sport but also as a way to exercise, to enjoy the camaraderie of like-minded people, and to donate money to a good cause. Though serious runners may spend months training to compete, other runners and walkers might not train at all. Those not competing to win might run in an effort to beat their own time or simply to enjoy the fun and exercise. People of all ages, from those of less than one year (who may be pushed in strollers) to those in their eighties, enter into this sport. The races are held on city streets, on college campuses, through parks, and in suburban areas, and they are commonly 5 to 10 kilometers in length. The largest footrace in the world is the 12-kilometer Bay to Breakers race that is held in San Francisco every spring. This race begins on the east side of the city near San Francisco Bay and ends on the west side at the Pacific Ocean. There may be 80,000 or more people running in this race through the streets and hills of San Francisco. In the front are the serious runners who compete to win and who might finish in as little as 34 minutes. Behind them are the thousands who take several hours to finish. In the back of the race are those who dress in costumes and come just for fun. One year there was a group of men who dressed like Elvis Presley, and another group consisted of firefighters who were tied together in a long line and who were carrying a fire-hose. There was even a bridal party, in which the bride was dressed in a long white gown and the groom wore a tuxedo. The bride and groom threw flowers to bystanders, and they were actually married at some point along the route.

The  word  “beat”  as  used  in  the  first  paragraph  could  be  best  replaced  by  which  of  the following?

 Nội dung nào dưới đây không phải chức năng quản lí nhà nước về kinh tế?

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.

EXPLORE THE POWER OF SOCIAL MEDIA!

Start your social media journey today and discover a world of endless possibilities

Connect, Share, and Learn!

Social media has changed the way we (7)______, learn, and share ideas. It allows us to stay in touch with friends, (8)______ new topics, and share our daily moments with the world. Whether you love posting pictures or watching videos, social media is a space for everyone.

What Makes Social Media Great?

• Stay Connected – (9)______ with family and friends, no matter how far they are.
• Learn Something New – Follow pages about hobbies, news, or (10)______ skills you want to improve.
• Express Yourself – Share your thoughts, photos, and videos with (11)______ users around the world.

Social Media for Everyone!

Social media is (12)______ for fun but it’s also a tool for learning, building friendships, and sharing your voice. Join a community today and see how it can make your life more exciting and connected!

Cho các dữ kiện sau:

1. Mở đầu vai trò cách mạng chống đế quốc và phong kiến ở Trung Quốc;

2. Phong trào Ngũ tứ lôi cuốn đông đảo các tầng lớp xã hội tham gia;

3. Đánh dấu bước chuyển của cách mạng.

Hãy sắp xếp các dữ kiện trên theo đúng lôgíc.

Circle A.  B.  C or D to indicate the correct answer to each of the following questions

The children loved_______the old castle.

Bảng sau cho biết mẫu số liệu ghép nhóm về số tiền (đơn vị: nghìn đồng) mà $60$ khách hàng mua sách ở một cửa hàng trong một ngày. 

Khoảng tứ phân vị của mẫu số liệu ghép nhóm trên là

CHỦ ĐỀ: TẠI SAO CON NGƯỜI KHÔNG BỊ KHÍ QUYỂN ĐÈ ÉP?

(Tham khảo bài văn của chủ đề trong đường link dưới đây ở trang 27)

https://tvsthpt.dlib.vn/app/doc-sach-ebook/d0afa01ca011

Và trả lời câu hỏi sau:

Nhận định sau đây là đúng hay sai?

"Áp suất không khí tác động không đồng nhất lên cơ thể."

Anh B, anh X, anh Y và anh C cùng là bảo vệ tại một nông trường cao su. Một lần, phát hiện anh Y lấy trộm mủ cao su của nông trường đem bán, anh C đã giam anh Y tại nhà kho với mục đích tống tiền và nhờ anh X canh giữ. Ngày hôm sau, anh B đi ngang qua nhà kho, vô tình nhìn thấy anh Y bị giam, trong khi anh X đang ngủ. Anh B định bỏ đi vì sợ liên lụy nhưng anh Y đã đề nghị anh B tìm cách giải cứu mình và hứa sẽ không báo cáo cấp trên việc anh B tổ chức đánh bạc nên anh B đã giải thoát cho anh Y. Những ai sau đây vi phạm quyền bất khả xâm phạm về thân thể của công dân?

Đâu là ý đúng: Nguyên tắc thứ hai khi bón phân hóa học là gì?

Nhân tố nào quy định phong trào đấu tranh chống Pháp của nhân dân Lào và Campuchia sau Chiến tranh thế giới thứ nhất chưa giành được thắng lợi?

Cho hàm số lượng giác \(f(x)=\sin \left(5 x-\frac{\pi}{4}\right)\).

Tìm chu kỳ T của hàm số.

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

It is (A) interested (B) to compare the early stylized art forms (C) of ancient civilizations (D) with the modem abstract forms of art.

Read the following passage about addressing challenges and mark the letter A, B, C, or D to indicate the option that best fits each of the numbered blanks from 18 to 22.

Social issues are problems that affect a large number of people in society, often creating inequality and hardship. One of the most significant social issues today is poverty. (18) ______, such as food, shelter, and education. In many parts of the world, (19) ______, with families trapped in a cycle of deprivation. While poverty is a complex issue, it is often connected to factors like unemployment and lack of access to education. These factors make it hard for individuals to escape the cycle and improve their lives. To address poverty, governments and organizations must create sustainable policies that focus on education, healthcare, and employment opportunities.

Another pressing issue is gender inequality. In many countries, women still face discrimination in areas like employment and education, limiting their opportunities for personal and economic growth. Even in developed nations, women earn less than men for doing the same work. (20) ______, as people demand equal rights and opportunities for all genders. Moreover, gender inequality can also affect women’s health and safety, (21) ______.

Finally, environmental degradation, like pollution and climate change, is a growing global concern. Environmental damage, (22) ______, especially in poorer regions, often affects them the most. The increasing frequency of natural disasters, caused by climate change, is also putting immense pressure on vulnerable populations. Tackling these issues requires a collective effort from both individuals and governments. Only through cooperation and sustainable practices can we hope to create a more equitable and livable world for future generations.