YOLO, directed by Jia Ling, was the highest-grossing film in China over the Lunar New Year.
The use of avatars has caused a few concerns. Some users worry that they are spending so much time in virtual worlds
| A．concentrate | B．concern | C．confirm | D．communicate |
| A．damage | B．anxious | C．escape | D．imagine |
| A．calm | B．rewarding | C．alarm | D．half |
| A．loss | B．operation | C．ecology | D．focus |
| A．crowded | B．account | C．download | D．shallow |
Most students feel their IQ is what determines how well they are going to do in life, but new research suggests that EQ is a better way for achieving success. Professor Salovey says it is IQ that gets you
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8 . Several dozen graduate students in London were recently tasked with outwitting a large language model (LLM), a type of AI designed to hold useful conversations. LLMs are often programmed with guardrails designed to stop them giving harmful replies: instructions on making bombs in a bathtub, say, or the confident statement of “facts” that are not actually true.
The aim of the task was to break those guardrails. Some results were merely stupid. For example, one participant got the chatbot to claim ducks could be used as indicators of air quality. But the most successful efforts were those that made the machine produce the titles, publication dates and host journals of non-existent academic articles.
AI has the potential to be a big benefit to science. Optimists talk of machines producing readable summaries of complicated areas of research; tirelessly analysing oceans of data to suggest new drugs and even, one day, coming up with hypotheses of their own. But AI comes with downsides, too.
Start with the simplest problem: academic misconduct.Some journals allow researchers to use LLMs to help write papers. But not everybody is willing to admit to it. Sometimes, the fact that LLMs have been used is obvious. Guillaume Cabanac, a computer scientist, has uncovered dozens of papers that contain phrases such as “regenerate response” — the text of a button in some versions of ChatGPT that commands the program to rewrite its most recent answer, probably copied into the manuscript (原稿) by mistake.
Another problem arises when AI models are trained on AI-generated data. LLMs are trained on text from the Internet. As they churn out (大量炮制) more such text, the risk of LLMs taking in their own outputs grows. That can cause “model collapse”. In 2023 llia Shumailov, a computer scientist, co-authored a paper in which a model was fed handwritten digits and asked to generate digits of its own, which were fed back to it in turn. After a few cycles, the computer’s numbers became more or less illegible.After 20iterations (迭代), it could produce only rough circles or blurry lines.
Some worry that computer-generated insights might come from models whose inner workings are not understood. Inexplainable models are not useless, says David Leslie at an AI-research outfit in London, but their outputs will need rigorous testing in the real world. That is perhaps less unnerving than it sounds. Checking models against reality is what science is supposed to be about, after all.
For now, at least, questions outnumber answers. The threats that machines pose to the scientific method are, at the end of the day, the same ones posed by humans. AI could accelerate the production of nonsense just as much as it accelerates good science. As the Royal Society has it,nullius in verba: take nobody’s word for it. No thing’s, either.
1. The result of the task conducted in London shows that ________.| A．LLMs give away useful information | B．the guardrails turn out to be ineffective |
| C．AI’s influence will potentially be decreased | D．the effort put into the study of AI hardly pays off |
| A．The readability of the models’output is underestimated. |
| B．The diverse sources of information confuse the models. |
| C．Training on regenerated data stops models working well. |
| D．The data will become reliable after continuous iterations. |
| A．impractical | B．unjustified | C．groundless | D．unsettling |
| A．Faster Nonsense: AI Could Also Go Wrong |
| B．Imperfect Models: How Will AI Make Advances? |
| C．The Rise of LLMs: AI Could Still Be Promising |
| D．Bigger Threats: AI Will Be Uncontrollable |
9 . A good meal has a positive impact on one’s mood. Those who feast on Christmas buffet almost enjoy an immediate rise in their blood sugar. That will prompt a flood of chemicals that act as happy hormones to rush through their brains.
But the pleasure goes deeper. Tyrosine and tryptophan are needed for the production, respectively, of dopamine, a neurotransmitter (神经传递素) that controls feelings of pleasure and reward, and serotonin, another such, which helps regulate mood. And cranberries are high in vitamin C, which is involved in converting dopamine to noradrenaline, another neurotransmitter, and a lack of which seems to be associated with depression.
With mental-health disorders rising, a growing number of scientists are investigating how food or nutritional supplements affect the mind. But separating the brain’s nutritional needs from those of the rest of the body is difficult. Not possible for now, at least. And, compared with other fields, nutritional science is understudied. That is partly because it is hard to do well. Randomised controlled trials (rcts), used to test drugs, are tricky. Few people want to stick to an experimental diet for years. Instead, most nutritional science is based on observational studies that try to establish associations between particular foods or nutrients and diseases. They cannot be used to definitively prove a causal ( 因 果 关 系 的 ) connection between a disease and a particular contributing factor in a diet. But as with smoking and lung cancer, put together enough of these kinds of trials and causal narratives begin to emerge.
It is now clear that some diets are particularly good for the brain. One recent study concludes that sticking to the “Mediterranean diet”, high in vegetables, fruit, pulses and wholegrains, low in red and processed meats and saturated fats, decreases the chances of experiencing strokes, cognitive impairment and depression. Other recent work looking at a “green” Mediterranean diet high in polyphenols found it reduced age-related brain atrophy. Another version, the mind diet, emphasises, among other things, eating berries over other kinds of fruit and seems to lessen the risk of dementia.
Scientists think such diets may work by reducing inflammation in the brain. This, in turn, may affect areas such as the hippocampus, which is associated with learning, memory and mood regulation—and where new neurons grow in adults. Studies in animals show that when they are fed a diet rich in omega-3 fatty acids (from walnuts, for example), flavonoids (consumed mainly via tea and wine), antioxidants (found in berries) and resveratrol (found in red grapes), neuron growth is stimulated and inflammatory processes are reduced. This fits with research suggesting that those who regularly eat ultra-processed, fried and sugary foods, which increase inflammation in the brain, heighten their risk of developing depression.
1. Which of the following words can replace “tricky” in Paragraph 3?| A．Rare. |
| B．Tough. |
| C．Traditional. |
| D．Contradictory. |
| A．By keeping at an experimental diet for years. |
| B．By carrying out randomized controlled trials. |
| C．By identifying a particular contributing factor. |
| D．By comparing findings of certain kinds of trials. |
| A．A diet rich in fruit is good for cognitive abilities. |
| B．People fond of sugary foods may be a risk lover. |
| C．Red grapes add fuel to inflammation in the brain. |
| D．Drinking tea can solve age-related brain problems. |
| A．The links between diets and diseases. |
| B．The significance of Mediterranean diet. |
| C．The function of various neurotransmitters. |
| D．The influence of nutrients on mental health. |
10 . The beginning of the Year of the Dragon has foreshadowed a “Song of Ice and Fire” with the emergence of Sora, a text-to-video AI model. Videos generated by Sora display strong consistency when it comes to characters and backgrounds, and support continuous shots of up to 60 seconds, including highly detailed settings and multiple camera angles.
However, film insiders noted that currently, AI-generated 60-second videos cannot support the creation of a full-length movie, and the idea that AI tools will “bomb” the film and television industry is so far unfounded. Meanwhile, experts say not to worry excessively, as the integration of AI will help optimize certain occupations, attract more innovative talents and bring new possibilities to the film and television industry.
From the age of film stock to the digital age, from practical effects to digital effects, from 2D to 3D, Sora, like any technological revolution in the century-long history of film, will improve production efficiency, update production and may even create new genres and trends in filmmaking.
Facing the panic signals that AI tools will threaten the global film industry, film insiders argued that the fundamental DNA of film is art and that human creativity cannot be replaced.
| A．With OpenAI’s iteration speed, producing AI videos dozens of minutes long is not far off. |
| B．It is also likely to be incorporated into film and television education and training in the future. |
| C．Film and television are closely linked to technological advancements, which stimulate creativity. |
| D．Sora will undoubtedly prompt changes in existing industrial production and may even replace some jobs. |
| E．Sora is undoubtedly “more of an opportunity than a challenge” for the global film and television industry. |
| F．Creativity and film production requires the integration of emotional experiences and individual memories. |
| G．This implies that with just a text description, ordinary people using Sora may be able to become “great directors”. |
