相关试卷

A new study by the University of Texas at Austin, Texas A&M University reveals that large language models trained on popular but low-quality social media content can suffer from a type of "brain rot", which is familiar to anyone who's scrolled X or TikTok for too long.

"We live in an era where information grows faster than our attention spans. And much of the information is designed to get clicks, not to share truth or depth," says Junyuan Hong, an assistant professor at the National University of Singapore. Hong and his team fed different types of text to two open-source large language models during pretraining. They tested the models with a mix of widely shared social media posts with exaggerated language like "wow", "look", or "today only". The researchers then used several different evaluation standards to measure the impact of this "junk" social media content on two open-source models.

          The models trained on junk text experienced a kind of AI brain rot — with cognitive decline including reduced reasoning abilities and degraded memory. According to two assessment methods, the models also became less consistent with ethical (道德的) standards and more inclined to show psychopathic (精神错乱的) characteristics.

These results are similar to research on humans, showing that low-quality online content has a harmful effect on people's cognitive abilities. Many model developers might think social media posts are a good source of training data. "Training content may look like expanding the amount of data," Hong explains. "But it can silently damage reasoning abilities, ethical awareness, and the ability to focus on long contexts."

The findings also suggest that AI systems built around social platforms might suffer from quality control issues if user-generated posts are used in training without an eye toward the integrity of the posts. Hong warns that AI-generated low-quality content spreading on social media taints the data for future models. Their research shows such "brain rot" cannot be fully reversed by subsequent clean training.

Part of the answer comes from optics (光学). Violet light has the shortest wavelength on the spectrum (光谱) of visible light, right next to the unseen ultraviolet (紫外光), which only our skin detects. With its short wavelength and high frequency, the color purple contains the highest energy of all visible light. Symbolically, we can think of purple as the border between the visible and the invisible. Evolution also favors purple. As hunters and gatherers, early humans were drawn to variations of purple for the purpose of detecting eatable ripe fruit against the backdrop of green leaves.

Purple's significance stems from these physical and natural traits, but our love for it goes beyond science. Robert N. Kraft, a cognitive psychology professor, analyzed interviews with purple lovers, along with experiments and cultural evidence. A key reason is that purple looks good on them-all interviewees noted their purple outfits receive admirations.

Purple offers many combination possibilities, with deep purple on one end and lighter lavenders on the other. More than half the people interviewed extolled the "great variety" of colors to choose from, and they enjoy choosing different shades to wear, while staying in the color world of purple. Studies looking at personal characteristics suggest that people who love purple appreciate freshness, enjoy being artistic, and are comfortable taking innovative approaches to the challenges of everyday life. However, as noted by color researcher Andrew Eliot, we are only at the beginning of strict experimentation on color and psychological functioning.

The primary way people express their love of purple is by wearing it, with every manner of clothing and accessories, including coats, shirts, pants, dresses, jewelry and computer bags. But this love is expressed in other ways, as well. Three of the people interviewed said that when they moved to a different house, they made themselves feel at home by painting at least one wall of their new house purple.

Instead of merely standing at the front of the classroom lecturing on Shakespeare's poetry or grammar, Keating had a unique way of making the words come alive. In his first class, he walked into the room, a twinkle in his eye, and led the boys out into the hallway. Pointing at the old, faded pictures of former students, he said, "Carpe diem (抓住当下), boys. Seize the day. Make your lives extraordinary. These men were once just like you, with dreams and potential. Don't let this place bury your ambitions."

Keating's secret haven (港湾) "Whispers of the Bard" — a magical spot hidden from school authorities — was where he gathered students outdoors. Reciting poetry with great enthusiasm, he told them poetry is more than rhymes and meters: it's the soul's language, expressing our deepest desires and wildest dreams.

Keating encouraged students to find their own voice in great poets' works. For Neil Perry, who secretly loved the stage, Keating was a guiding star-he recognized Neil's potential, urged him not to let his father dim his passion, and helped him practice lines to express emotions. With Keating's consistent guidance, Neil grew more confident, daring to surpass (超出) his father's expectations.

Shy Todd Anderson, overshadowed by his brother, had a talent for uncovering literature's deeper meaning-something Keating noticed. Urging him to "open your treasure chest of a mind" and share his valuable interpretations without fear of standing out, Keating's encouragement helped Todd come out of his shell and find the courage to speak up.

Keating's encouragement was like a gentle wind that blew through the lives of these students, fanning the flames of their dreams and giving them the strength to pursue what they truly loved.

Welcome to the Amazon Basin Rainforest Exploration Program! We offer guided day hikes for nature lovers, designed to uncover the secrets of one of Earth's most diverse ecosystems. Here's all you need to know to join our adventure:

Tour Overview

Our expert guides — biologists and environmental scientists — will lead you through primary rainforest trails, pointing out rare plant species, colorful birds, and hidden wildlife. You'll learn about rainforest layers and how each supports unique life forms. The tour also includes a visit to a small stream where you can observe aquatic insects and understand the water cycle in the tropical forest.

Participation Requirements

•Age Limit: 12+; minors under 16 must be accompanied by a parent or guardian.

•Physical Fitness: Basic hiking ability is required — trails are unpaved and may have uneven surfaces.

•Essential Items: Wear lightweight, quick-dry clothing, strong hiking boots, and a hat. Bring a reusable water bottle (we provide refills), sunscreen, insect repellent, and a small backpack. Binoculars are recommended for bird watching.

•Booking: Advance online booking required (at least 3 days prior). Group bookings (8+ people) get 15% off.

Tour Details

•Duration: 6 hours (9:00 AM-3:00 PM), including a 30-minute picnic lunch (vegetarian options available upon request).

•Price: $75 per person (includes guide service, lunch, and entry fees; hiking poles provided free of charge).

•Note: Tours run rain or shine — light rain enhances the rainforest's biodiversity display! In case of extreme weather (e.g., heavy storms), we will reschedule or issue a full refund.

Join us to connect with nature, gain ecological knowledge, and create unforgettable memories of the rainforest!

1. 活动目的；

2. 参赛作品的亮点（如内容、语言、创意等）；

3. 活动带给学生的启示。

注意：

1. 写作词数应为100个左右；

2. 题目已给出。

Young Dreamers in Science

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

我们需要一劳永逸地解决这个问题，而不是反复处理它的表面症状。

这款软件旨在将复杂数据拆解成简单图表，方便用户理解。

老师表扬了这位学生，因为他在过去一年里全身心投入到社区的志愿工作中。

科学方法由观察、提出假设、实验和得出结论组成。

我们校长认同这一观点：积极的校园文化是学术成功的基础。

她好几天熬夜完成项目后，患上了严重的感冒。

一个手势的含义很大程度上依赖于语境；例如，点头可以表示同意、鼓励，甚至是不耐烦。

你需要先在线提交申请表。换句话说，不完成这一步你就无法获得面试机会。

有你的杀毒软件在运行防护，你的电脑就能得到良好保护。

护士的大部分工作时间都在照料病人的需求，从监测生命体征到协助日常护理。