Choose A, B, C or D to answer the question.

Which of the following situations best exemplifies “collaboration,” where individuals work together to achieve a common goal?

Tam giác ABC có góc A nhọn, AB = 5, AC = 8, diện tích bằng 12. Độ dài cạnh BC là khoảng?

Nếu hiệu điện thế giữa hai bản tụ tăng 4 lần thì điện dung của tụ

Đơn vị của tần số góc là:

Read the following passage about The Longitude Prize and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions

     On a stormy night in 1707, four ships struck rocks off the south coast of England and sank. [I] One thousand, four hundred sailors were drowned. [II] The ships had crashed because they had no way of knowing how far they had travelled in a particular direction; they could not calculate their longitude, which required accurate time measurement. [III] In such difficult circumstances, they believed that the best response to the disaster was a competition: the Longitude Prize. [IV]

     The Longitude Prize was no ordinary competition. To win it, someone had to find a way of calculating how far a ship had travelled east or west from its point of departure. Geniuses such as Sir Isaac Newton had failed to find a solution, so to ensure the interest of Britain’s greatest scientific minds, the government offered a prize of £20,000 — the equivalent of £2.6 million in today’s money. But to everyone’s surprise, it wasn’t a famous academic who solved the problem, but an unknown carpenter.

     When John Harrison wasn’t working with wood, he was making clocks. An accurate clock would allow sailors to calculate their position, but at the time it was thought impossible to create a mechanical clock that could work on a ship. The movement of the sea and the changes in temperature destroyed the delicate parts. However, after three frustrated attempts, Harrison’s fourth sea clock, H4, finally triumphed. Its mechanics were so good that the H4 worked better than most clocks on land.

   The Longitude Prize and Harrison’s success generated a lot of interest in the 18th century, but it was soon forgotten. However, in 2013, the British government created a new Longitude Prize, offering £10 million to the person who could solve a great challenge to humanity. An enthralled public then took part in a TV programme where viewers chose one challenge from a list of six for scientists to focus on. The question now is, will someone be able to solve it just as well as Harrison solved the challenge presented to him?

Which of the following best paraphrases the underlined sentence in paragraph 4?

Cho hình chóp S.ABCD có đáy ABCD là hình bình hành. Gọi I,\,K lần lượt là trung điểm của BC và CGọi M là trung điểm của SGọi F là giao điểm của DM và (SIK). Tính tỉ số \(\frac{MF}{MD}\).

Ta có các Khoản sau:

1. Chiếm đoạt quyền tác giả đối với tác phẩm văn học, nghệ thuật, khoa học.

2. Phạt tiền từ 5 000 000 đồng đến 10 000 000 đồng đối với hành vi xuyên tạc tác phẩm gây phương hại đến danh dự và uy tín của tác giả.

3. Công bố, phân phối tác phẩm mà không được phép của tác giả.

5. Sửa chữa, cắt xén hoặc xuyên tạc tác phẩm dưới bất kì hình thức nào gây phương hại đến danh dự và uy tín của tác giả.

Các Khoản nào trên đây thuộc Điều 28 Luật Sở hữu trí tuệ số 50/2005/QH11 (sửa đôi, bô sung bởi luật số 42/2019/QH14 ngày 14/06/2019) qui định về Hành vi xâm hại quyền tác giả?

Loại hình vận tải nào có vai trò quan trọng nhất thúc đẩy sự phát triển của vùng Đông Xi-bia?

Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

a. Maya: I use a fitness tracker on my wrist, and it counts my steps while I'm walking around the neighborhood.

b. Tyler: I got a new smart water bottle yesterday, and it reminds me to drink water with colorful lights.

c. Tyler: Maybe we could connect our devices and challenge each other, or we could just go hiking this weekend without any technology!

d. Tyler: The app also tracks how much water I drink, and it gives me little badges when I reach my daily goals.

e. Maya: That sounds really cool, but I don't think I need a bottle to remind me to stay hydrated.

Một cách đúng khi bảo vệ thông tin trên máy tính cá nhân là

Bảng ghi thời gian rơi của một vật giữa hai điểm cố định

Sai số tuyệt đối trung bình của thời gian rơi là bao nhiêu?

Read the following passage about urban shift and mark the letter A, B, C, D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

[I] Sperm whales are fascinating creatures. [II] They possess the biggest brain of any species, six times larger than a human’s, which scientists believe may have evolved to support intelligent, rational behavior. [III] They’re also highly social and capable of making decisions as a group. [IV] But there’s also a lot we don’t know about them, including what they may be saying to one another when communicating with a system of short clicks, known as codas.

Now, new research published in Nature Communications today suggests that sperm whales’ communication is actually much more expressive and complicated than was previously thought. A team of researchers led by Pratyusha Sharma at MIT’s Computer Science and Artificial Intelligence Lab (CSAIL) working with Project CETI, a nonprofit focused on using AI to understand whales, used statistical models to analyze whale codas and managed to identify a structure to their language that’s similar to features of human language. Their findings represent a tool future researchers could use to decipher not just the structure but the actual meaning of whale sounds.

For the study, the researchers examined recordings of 8,719 codas from around 60 whales collected by the Dominica Sperm Whale Project between 2005 and 2018, using a mix of AI algorithms for pattern recognition and classification. The AI then turned the clicks within the coda data into a new kind of data visualization called an exchange plot, revealing that some codas featured extra clicks. These extra clicks, combined with variations in the duration of their calls, appeared in interactions between multiple whales, which they say suggests that codas can carry more information and possess a more complicated internal structure than we had previously believed.

The team’s next step is to build language models of whale calls and to examine how those calls relate to different behaviors. They also plan to work on a more universal system that could be used across species, says Sharma. Taking a communication system we know nothing about, working out how it encodes and transmits information, and slowly beginning to understand what’s being communicated could have many purposes beyond whales. “I think we’re just starting to understand some of these things,” she says. “We’re very much at the beginning, but we are slowly making our way through.”

What do we learn about sperm whales in paragraph 1?

Trong không gian với hệ tọa độ Oxyz, cho hình vuông \(ABCD,\,\,B(3;0;8),\,\,D(-5;-4;0)\). Biết đỉnh \(A\) thuộc mặt phẳng (Oxy) và có tọa độ là những số nguyên, khi đó \(|\overrightarrow{CA}+\overrightarrow{CB}|\) bằng:

Bước 2 của quy trình thiết kế kĩ thuật là:

Nội dung về việc chưa thực hiện tốt quy định của Hiến pháp về chủ quyền, lãnh thổ là gì?

Một người bắt đầu cho xe máy chạy trên một đoạn đường thẳng. Trong 10 s đầu xe chạy được quãng đường 50 m, trong 10 s tiếp theo xe chạy được 150 m. Tốc độ trung bình của xe máy trong 20 s đầu tiên là bao nhiêu?

Một điện tích - 2.10^-6 C đặt trong chân không sinh ra điện trường tại một điểm cách nó 1m có độ lớn và hướng là

Tiêu chí phân chia thành nước phát triển và nước đang phát triển không gồm có tiêu chí nào?