Một website có rất nhiều quảng cáo lạ, khi bấm vào quảng cáo bất kì thì tự động tải xuống phần mềm lạ. Dấu hiệu vừa nêu có thể là

Biết \(\lim \frac{-3 n^{3}+2 n^{2}-4}{a n^{3}-1}=\frac{1}{2}\) với \(a\) là tham số. Khi đó \(a^{3}+3 a\) bằng 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.”

Which of the following can most likely be inferred from the passage?

Cho bốn điểm A, B, C, D trong đó không có ba điểm nào thẳng hàng. Có tất cả bao nhiêu mặt phẳng được tạo thành từ ba trong bốn điểm trên?

Xác định ý đúng: Việc phân chia tài nguyên thiên nhiên thành tài nguyên đất, nước,khí hậu, sinh vật, khoáng sản được cho là sự phân loại dựa vào?

Chênh lệch áp suất người thợ lặn phải chịu khi ở độ sâu 50 (m) so với khi nổi ở trên mặt nước là

Một người đẩy một chiếc hộp khối lượng 50kg trên mặt sàn, cho \(g = 10m/{s^2}\). Người đó phải đẩy một lực 100N thì chiếc hộp dịch chuyển. Hệ số ma sát giữa hộp và sàn là

Giá trị của giới hạn \(\underset{x\to 1}{\mathop{\lim }}\,\frac{x-{{x}^{3}}}{\left( 2x-1 \right)\left( {{x}^{4}}-3 \right)}\) là

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer.

Why are we always pointing to Instagram as the cause of mental illness in our teenagers? It’s frustrating that abusive relationships, and the trauma they cause, are rarely mentioned in discussions about the prevalence of mental health problems in young people. Research by Women’s Aid and Cosmopolitan has found that a third of teenage girls have been in an abusive relationship. And, if that isn’t shocking enough, when the remaining two-thirds were asked further questions, it emerged that 64% of them had, in fact, experienced abusive behaviour – they just didn’t realise it was abuse.

Domestic abuse is normally associated with women cowering on the floor, as a violent husband waits to strike, or mothers covering up their black eyes with concealer before the school run. On the same day that the domestic abuse bill received its second reading in parliament, Age UK called for action to tackle domestic abuse of over-60s, whose needs it says are often overlooked by the law, policy and practice. The needs of teenagers in the heady throes of first love who are in emotionally abusive relationships also need to be recognised.

Common themes of such relationships include (though are not limited to) excessive jealousy, repeated criticism and sexual coercion. If your boyfriend or girlfriend is checking your phone, constantly asking to know your whereabouts, getting upset when you spend time away, turning up unannounced to surprise you, these are all examples of coercive control. If they never apologise in an argument and make everything your fault, tell you what you can and can’t wear, undermine you and/or publicly humiliate you under the guise of a “joke”, these again are common instances of controlling behaviour. Ditto, if they have a Jekyll/Hyde personality, make you feel like you are walking on eggshells even when things are seemingly going well, and threaten to hurt themselves if you leave. When it comes to sexual coercion and rape, examples include making you feel pressured to perform sexual acts you’re uncomfortable with, such as sending nude photos, having sex before you’re ready, being pressured to re-enact extreme sex from porn films or being told you don’t love them if you say no.

Often the victim in an abusive relationship can never quite put their finger on one thing, but the overwhelming feeling is of a general unease, feeling unsafe, defective, wrong, scared and as if you are going crazy. It’s your “yourselfness” that’s being consistently undermined, controlled and attacked by the person who claims to love you.

What does the passage mainly discuss?

Hoocmôn nào có vai trò thúc quả chóng chín và rụng lá?

Nội dung nào sau đây là một trong những vai trò của tri thức lịch sử đối với cuộc sống của con người?

Vì sao năm 1870, Phổ tiến hành cuộc chiến tranh với Pháp?

Kí hiệu trị số điện dung là:

Giá trị của hàng hóa được đo bằng:

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.

Dear Emma,

a. Because technology makes it easy to stay connected, I can talk to my family even though we are far apart.

b. If you want to visit me next month, which would make me very happy, we can explore this amazing island together!

c. I'm writing to you from Bali, where I'm working on my laptop while I enjoy the beautiful beach.

d. Although I miss home sometimes, I love that I can travel to different countries when I have my computer and internet.

e. When you asked if I feel lonely, I must say that I meet many friendly people who share the same lifestyle.

Your friend,

LK

Vì sao thực dân Pháp chú trọng xây dựng hệ thống giao thông trong cuộc khai thác thuộc địa lần thứ nhất?

Vào những ngày cuối tuần, mọi người được nghỉ nên nhu cầu xem phim để giải trí thường tăng cao cho nên giá vé xem phim vào cuối tuần thường cao hơn ngày thường. Yếu tố nào của thị trường tác động đến giá vé?

Điểm khác biệt của Nhật Bản so với Việt Nam giữa thế kỉ XIX là