Trong mỗi ý a), b), c), d) ở mỗi câu, thi sinh chọn đúng hoặc sai

Khi kiểm tra thị lực của 240 học sinh khối 12 ở một trường phổ thông, người ta được kết quả như bảng ở hình bên. Chọn ngẫu nhiên 1 học sinh.

Thị lực Giới tính	Nữ	Nam
Có tật khúc xạ	47	42
Không có tật khúc xạ	85	66

Nucleotide được cấu tạo bởi các thành phần nào?

Cho hai tập hợp A = [1; 3] và B = [m; m + 1]. Tìm m để B là tập con của A.

Chọn câu đúng: Gia tốc là đại lượng

Phát biểu nào sau đây không đúng với dân cư và xã hội của Trung Quốc?

Tính chất nào sau đây không biến đổi tuần hoàn theo chiều tăng của điện tích hạt nhân?

Choose the word which has a different stress pattern from the others.

Trong không gian với hệ tọa độ $Oxyz$, cho hình chóp $S.ABCD$ có các đỉnh lần lượt là

$S(0;0;a)$; $A(0; 0; 0)$; $B(2a; 0; 0)$; $D\Big(0; \dfrac{2a\sqrt{3}}{3}; 0 \Big)$ với $a>0$.

Góc giữa hai mặt phẳng $(SBD)$ và $(ABCD)$ bằng

Thông thường sau khi sử dụng khăn lông để lau mắt kính ta thấy sẽ có một vài mảnh vụn của lông tơ còn bám lại trên kính, đó là hiện tượng nhiễm điện do

Nền kinh tế Việt Nam là nền kinh tế thị trường với nhiều thành phần kinh tế là nội dung cơ bản về lĩnh vực nào của Hiến pháp nước Cộng hoà xã hội chủ nghĩa Việt Nam năm 2013?

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 questions from 36 to 42.

In the distance, an enormous, menacing-looking tornado can be seen. Luckily, the area has been evacuated and there is no one to be seen. Then, out of the blue, a few kilometres away a van appears and races down the road straight towards the tornado. Both in their twenties, Joe Hammond and his wife Emma are heading for it. Their purpose is to monitor various characteristics of a tornado, such as its speed, direction, and temperature. The storm chasers are planning to plant themselves directly in the path of the tornado to amass as much information as they can.

Joe and Emma are dedicated storm chasers. They began to chase storms as university students, and in recent years they have been travelling vast distances around the USA in their efforts to locate tornadoes. Bizarre as it may sound, they are not the only people to do it. During the tornado season, hundreds of people cross Tornado Alley, an area between South Dakota and Texas. Their vehicles are almost unrecognisable, as they are concealed underneath an assortment of electronic equipment and contain all manner of communication devices.

When asked why people are so fascinated by tornadoes, Joe said some tornado chasers relish the challenge, while others might just love the exhilaration of being in a treacherous situation. Some experienced chasers have even turned their hobby into a business and set up travel agencies offering tourists trips which guarantee a ringside view of the twisters. It seems, however, that people like Joe and Emma also make a pivotal contribution to the study of tornadoes.

The fact is, although there are about a thousand tornadoes in the USA each year, meteorologists still do not fully comprehend why they happen. This is partly because the research done by radars in laboratories is not as efficacious as mobile equipment deployed directly at the scene. Thus, some research meteorologists even go storm chasing themselves. It seems that the thrill, combined with a desire to understand nature, is the reason why people like Joe and Emma chase tornadoes.

(Adapted from Venture into First for Schools)

The word concealed in paragraph 2 could be best replaced by ________.

Read the following passage about news 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] Wildlife conservation refers to the efforts made to protect and preserve wild animal species and their habitats. [II] It is crucial for maintaining biodiversity, which plays a vital role in ecosystem stability and health (Smith & Jones, 2018). [III] Unfortunately, many species are threatened due to habitat destruction, poaching, and climate change, making conservation efforts more urgent than ever. [IV]

One of the primary reasons for wildlife conservation is the preservation of biodiversity. A diverse range of species contributes to ecosystem services, such as pollination, water purification, and climate regulation. The loss of a single species can disrupt these services and lead to ecological imbalances. For instance, the decline of pollinators like bees has serious implications for food production and agriculture (Global Biodiversity Outlook, 2020).

Moreover, wildlife conservation has significant economic benefits. Many communities depend on ecotourism, which relies on healthy wildlife populations and intact ecosystems. According to a study by the World Wildlife Fund (WWF), ecotourism can generate billions of dollars in revenue, providing jobs and supporting local economies (WWF, 2021). Protecting wildlife not only safeguards natural resources but also creates sustainable livelihoods for local populations.

However, effective wildlife conservation requires a collaborative approach. Governments, non-governmental organizations, and local communities must work together to implement policies and strategies that promote conservation efforts. Community-based conservation initiatives, where local people actively participate in protecting their natural resources, have shown promising results. These initiatives empower communities and ensure that conservation efforts are tailored to local needs and contexts (Bennett & Dearden, 2014).

According to paragraph 2, which of the following is NOT a reason for wildlife conservation?

Chủ thể nào sau đây đang thực hiện chức năng làm chủ thể trung gian?