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Q2341036 Inglês
Text 1A1-I


        Hydrogen is viewed as a promising alternative to fossil fuel, but the methods used to make it either generate too much carbon dioxide or are too expensive. Rice University researchers have found a way to harvest hydrogen from plastic waste using a low-emission method that could more than pay for itself.

           By comparison, “green” hydrogen ⎯ produced using renewable energy sources to split water into its two component elements ⎯ costs roughly US$ 5 for just over two pounds. Though cheaper, most of the nearly 100 million tons of hydrogen used globally in 2022 was derived from fossil fuels, its production generating roughly 12 tons of carbon dioxide per ton of hydrogen.

          The researchers exposed plastic waste samples to rapid flash Joule, bringing their temperature up to 3100 Kelvin. “We demonstrated that we are able to recover up to 68% of that atomic hydrogen as gas with a 94% purity,” Kevin Wyss said. “I hope that this work will allow for the production of clean hydrogen from waste plastics, possibly solving major environmental problems like plastic pollution and the greenhouse gas-intensive production of hydrogen by steam-methane reforming.”


Internet: <news.rice.edu> (adapted).

Based on text 1A1-I, judge the following item.


It is correct to infer from text 1A1-I that researcher Kevin Wyss is unenthusiastic about the potential of his work as a possible solution for some environmental issues.


Alternativas
Q2341034 Inglês
Text 1A1-I


        Hydrogen is viewed as a promising alternative to fossil fuel, but the methods used to make it either generate too much carbon dioxide or are too expensive. Rice University researchers have found a way to harvest hydrogen from plastic waste using a low-emission method that could more than pay for itself.

           By comparison, “green” hydrogen ⎯ produced using renewable energy sources to split water into its two component elements ⎯ costs roughly US$ 5 for just over two pounds. Though cheaper, most of the nearly 100 million tons of hydrogen used globally in 2022 was derived from fossil fuels, its production generating roughly 12 tons of carbon dioxide per ton of hydrogen.

          The researchers exposed plastic waste samples to rapid flash Joule, bringing their temperature up to 3100 Kelvin. “We demonstrated that we are able to recover up to 68% of that atomic hydrogen as gas with a 94% purity,” Kevin Wyss said. “I hope that this work will allow for the production of clean hydrogen from waste plastics, possibly solving major environmental problems like plastic pollution and the greenhouse gas-intensive production of hydrogen by steam-methane reforming.”


Internet: <news.rice.edu> (adapted).

Based on text 1A1-I, judge the following item.



The word “itself” (last sentence of the first paragraph) refers back to “plastic”, meaning that plastic could pay for its cost.  


Alternativas
Q2341032 Inglês
Text 1A1-I


        Hydrogen is viewed as a promising alternative to fossil fuel, but the methods used to make it either generate too much carbon dioxide or are too expensive. Rice University researchers have found a way to harvest hydrogen from plastic waste using a low-emission method that could more than pay for itself.

           By comparison, “green” hydrogen ⎯ produced using renewable energy sources to split water into its two component elements ⎯ costs roughly US$ 5 for just over two pounds. Though cheaper, most of the nearly 100 million tons of hydrogen used globally in 2022 was derived from fossil fuels, its production generating roughly 12 tons of carbon dioxide per ton of hydrogen.

          The researchers exposed plastic waste samples to rapid flash Joule, bringing their temperature up to 3100 Kelvin. “We demonstrated that we are able to recover up to 68% of that atomic hydrogen as gas with a 94% purity,” Kevin Wyss said. “I hope that this work will allow for the production of clean hydrogen from waste plastics, possibly solving major environmental problems like plastic pollution and the greenhouse gas-intensive production of hydrogen by steam-methane reforming.”


Internet: <news.rice.edu> (adapted).

Based on text 1A1-I, judge the following item.



One of the drawbacks about the current forms of extraction of hydrogen as fuel is the elevated cost.

Alternativas
Q2337761 Inglês
Text 2


Communicative Language Teaching aims broadly to apply the theoretical perspective of the Communicative Approach by making communicative competence the goal of language teaching and by acknowledging the interdependence of language and communication. What this looks like in the classroom may depend on how the tenets are interpreted and applied. Nevertheless, we will follow our usual way of und erstanding the theor y and ussocia rcd practices by visiting a class in which a form of Communicative Language Teaching is being practiced. The class we will visit is one being conducted for adult immigrants to Canada . These twenty people have lived in Canada for two years and are at a high-intermediate level of English proficiency. They meet two evenings a week for two hours each class.


LARSEN-FREEMAN, Diane. Techniques and Principles in Language Teaching. 3rd ed. Oxford ; New York: Oxford University Press, 2011.
Which of the following sentences is an example of second conditional structure?
Alternativas
Q2335662 Inglês
TEXT:


How do people overcome fossilization and achieve nativelike fluency in second language acquisition?

There are a lot of common misconceptions about fossilization and language development. It's impossible to correct all of them in a post here, but I'll address a few that have been mentioned below.

Fossilization is a stage at which a second language speaker seems to cease making progress toward becoming more targetlike in his or her use of the language, so a "learning plateau" is a reasonable analogy. The comparison wherein "the L2 learner has his own linguistic system" that's still influenced by L1 and other things is known as the "interlanguage." The question researchers cannot conclusively answer is whether or not that "plateau" is reversible after a certain point, be it age, fluency level, etc., in order to start making progress again.

Different people are motivated by different things, which range from need (to pass a test, to get a job, to watch movies without subtitles, to make friends, etc.) to learning style (preferring to study from texts, liking/disliking impromptu, small-talk with people just to practice, preference for/against learning formal rules, and aptitude). It is easy to remember verb conjugations. There is no single formula.

Finding someone who can correct your errors tactfully and effectively most certainly does not need to be demotivating, depressing or draining whatsoever. I'm a very fluent non-native speaker of Spanish, and I actively request that my native speaker (NS) friends correct me when I make a mistake, or use a phrase that sounds funny in their dialect, etc. How else will I learn? It's fascinating to learn little details like that now after so many years. As long as they don't do it in a mocking or condescending way, or at a socially inappropriate time, why wouldn't I want their help? Of course, if you correct a beginner every time they try to utter a sentence, it could be discouraging - and obnoxious - but everything in moderation.

One of the biggest cognitive challenges is whether or not L2 speakers can learn to consciously notice differences between their L2 efforts and the way a NS talks. There are decades of research on this (my own included) and I'll gladly give references if anyone actually cares. Noticing falls into two broad categories. First, the ability to "notice the gap," i.e. hear a NS say a sentence and think, "Hmm, I understand what he meant but I've never heard that word before; it must mean ___" or "I know what he meant but it would not have occurred to me to say it that way; I'll try to remember that for later." The second is the ability to "notice the hole," i.e. when the L2 learner is trying to speak/ write and realizes that his "interlanguage" lacks a word, sound or structure needed to accurately convey his own thought. If he can seek the input necessary to fill the hole, he has a much stronger chance of acquiring it. The thought processes involved during that moment are holding the forms (or lack thereof) in working memory, and the longer it stays there for further processing, the greater the possibility that it is retained in long-term memory for later use. The NS interlocutor can help promote noticing through corrective feedback (also a subject of decades of research, for which I'm also happy to provide resources if anyone is genuinely interested.)

I have been using a variety of strategies for years as a language coach when working with my clients, whether helping IT executives from India and Egypt learn to write more grammatically accurate e-mail or helping priests from Nigeria improve prosodic aspects of their pronunciation (i.e. stress and intonation patterns.) Each person is different. I have found no evidence to support the argument that a person who has fossilized cannot begin to make progress again toward a more target-like L2 use at least in some areas, with the right motivation, input and effort. The question is only about how much progress, in what areas, in how much time, and through what methods.


Adapted form: https://www.quora.com/How-do-people-overcome-fossilization-andachieve-native-like-fluency-in-second-language-acquisition Acesso em 22/09/2023
Dentre as orações condicionais abaixo, todas retiradas do texto, aquela que é classificada como uma “future real conditional” é:
Alternativas
Respostas
231: E
232: E
233: C
234: E
235: D