Questões de Concursos Inglês

O texto seguinte servirá de base para responder à questão.

Cancer therapies are getting a makeover

By Vanessa Chalmers, Health Features Editor

Cancer is no longer a death sentence when diagnosed, thanks to the ongoing emergence of treatments that can extend lives as well as better detection methods to find the disease earlier.Scientists have learned a lot about the immune response to cancer and are now harnessing it.When we hear the word vaccine, we typically think of it as preventing disease.But in this case, vaccines are being used as a treatment. Once injected they train the immune system to recognise and fight cancer cells. The body itself is recruited to kill the cancer, rather than relying on medicines.The process leaves healthy cells untouched, unlike chemotherapy, which kills healthy tissue and causes debilitating symptoms. NHS England's national cancer director, Dame Cally Palmer, said cancer vaccines being trialled could mark a huge step in treating the disease.There are also personalised vaccines which are designed specifically for an individuals cancer, based on their genetics.The challenges with personalised vaccines and other hugely advanced cancer therapies is they are very expensive to develop - and the question is whether the NHS will be able to afford such therapies when they come to fruition.

https://www.thesun.co.uk/health/30417145/cancer-vaccine-stops-tumou rs-growing-advanced-disease/

TEXT 1

What do AI chatbots really mean for students and cheating?

October 31, 2023 By

Carrie Spector

The launch of ChatGPT and other artificial intelligence (AI) chatbots has triggered an alarm for many educators, who worry about students using the technology to cheat by passing its writing off as their own. But two Stanford researchers say that concern is misdirected, based on their ongoing research into cheating among U.S. high school students before and after the release of ChatGPT.

Here, Lee and Pope discuss the state of cheating in U.S. schools, what research shows about why students cheat, and their recommendations for educators working to address the problem.

What do we know about how much students cheat?

Pope: We know that cheating rates have been high for a long time. At Challenge Success we’ve been running surveys and focus groups at schools for over 15 years, asking students about different aspects of their lives — the amount of sleep they get, homework pressure, extracurricular activities, family expectations, things like that — and also several questions about different forms of cheating.

For years, long before ChatGPT hit the scene, some 60 to 70 percent of students have reported engaging in at least one “cheating” behavior during the previous month. That percentage has stayed about the same or even decreased slightly in our 2023 surveys, when we added questions specific to new AI technologies, like ChatGPT, and how students are using it for school assignments.

So AI isn’t changing how often students cheat — just the tools that they’re using?

Lee: The most prudent thing to say right now is that the data suggest, perhaps to the surprise of many people, that AI is not increasing the frequency of cheating. This may change as students become increasingly familiar with the technology, and we’ll continue to study it and see if and how this changes. But I think it’s important to point out that, in Challenge Success’ most recent survey, students were also asked if and how they felt an AI chatbot like ChatGPT should be allowed for school-related tasks. Many said they thought it should be acceptable for “starter” purposes, like explaining a new concept or generating ideas for a paper. But the vast majority said that using a chatbot to write an entire paper should never be allowed. So this idea that students who’ve never cheated before are going to suddenly run amok and have AI write all of their papers appears unfounded. What would you suggest to school leaders who are concerned about students using AI chatbots?

Pope: Even before ChatGPT, we could never be sure whether kids were getting help from a parent or tutor or another source on their assignments, and this was not considered cheating. Kids in our focus groups are wondering why they can't use ChatGPT as another resource to help them write their papers — not to write the whole thing word for word, but to get the kind of help a parent or tutor would offer. We need to help students and educators find ways to discuss the ethics of using this technology and when it is and isn't useful for student learning.

Lee: There’s a lot of fear about students using this technology. Schools have considered putting significant amounts of money in AI-detection software, which studies show can be highly unreliable. Some districts have tried blocking AI chatbots from school wifi and devices, then repealed those bans because they were ineffective. AI is not going away. Along with addressing the deeper reasons why students cheat, we need to teach students how to understand and think critically about this technology. For starters, at Stanford we’ve begun developing free resources to help teachers bring these topics into the classroom as it relates to different subject areas. We know that 3 teachers don’t have time to introduce a whole new class, but we have been working with teachers to make sure these are activities and lessons that can fit with what they’re already covering in the time they have available.

I think of AI literacy as being akin to driver’s education: We’ve got a powerful tool that can be a great asset, but it can also be dangerous. We want students to learn how to use it responsibly.

Available from: < https://ed.stanford.edu/news/what-do-ai-chatbots-really-mean-students-and-cheating>. Access: 08 Dec., 2023. Adapted.

Text 2

(Part II) Students’ skills

But graduation rates, while important, speak little to the quality of education received. The OECD’s Programme for International Student Assessment (PISA) reviews the extent to which students near the end of their compulsory education (usually around age 15) have acquired some of the knowledge and skills that are essential for full participation in modern societies, particularly in reading, mathematics and science.

In 2018, PISA tested students from 79 countries, including OECD countries, Brazil, the Russian Federation and South Africa. The students were tested on their reading ability, their skills in maths and level in sciences. Research shows that these skills are more reliable predictors of economic and social well-being than the number of years spent in school or in post -formal education. The average student in the OECD area scored 488. On average in the OECD, girls scored 491 compared with 485 for boys.

Estonia is the highest-performing OECD country, with average PISA scores of 526, followed by Japan and Korea with 520 points. The lowest performing OECD country, Colombia, has an average score of 406. This means that the gap between the highest and lowest performing OECD countries is 120 points.

The best-performing school systems manage to provide highquality education to all students. In Canada, Estonia, Finland and Ireland for example, students tend to perform well regardless of their social background. In Israel and Luxembourg however, the gap between the students with the lowest socio-economic background and the students with the highest socio-economic background reaches more than 120 points, suggesting students’ socio-economic background tends to have an impact on their results. On average across OECD countries, there is a widening 89-point difference in PISA scores between the students with the highest and lowest socio-economic background.

https://www.oecdbetterlifeindex.org/topics/education/

More than 100 South African gold miners

treated for smoke inhalation

JOHANNESBURG (Reuters) – Hundreds of South African gold mine workers were rescued and over 100 treated for smoke inhalation after an underground fire, the National Union of Mineworkers (NUM) said on Thursday.

Safety is a huge issue in South Africa’s dangerous deep-level mines and a focus for investors. A spate of deaths at SibanyeStillwater’s gold operations, including a seismic event that killed seven miners in early May, has highlighted the risks.

In the latest incident, more than 600 miners were initially trapped after a fire broke out at a mine east of Johannesburg operated by unlisted Gold One, NUM said.

This comes almost two weeks after five miners died in an underground fire at a South African copper mine operated by unlisted Palabora Mining Company in Limpopo.

Company officials could not immediately be reached for comment.

“As the NUM, we vehemently condemn this kind of incident as it is becoming a trend”, the union said in a statement.

(Disponível em:<https://www.reuters.com/article/us-safrica-mining-fire/more-than-100-south-african-gold-miners-treated-for-smoke-inhalation-idUSKBN1KG294.)