Foram encontradas 160 questões.
Text 1A1-II
Brazil’s first scientific expedition to the Arctic aims to
explore the biodiversity of one of the planet’s coldest territories,
learn more about its ecological importance and its role in global
climate change, and contribute to its preservation.
The Brazilian team of scientists from the University of Brasília
and the Federal University of Minas Gerais has been in the
Svalbard archipelago—a section of the Arctic Circle that belongs
to Norway—since July 8.
According to the expert, research in the region is crucial in
monitoring relevant developments in Brazil as well as worldwide.
“What happens here in the Arctic affects Brazil, so we should
have the right to speak and vote, which is not happening.”
Brazil is the only among the ten largest global economies
without a voice on issues related to the region. Therefore,
Brazil’s scientific presence in the Arctic—a region covering
more than 16 million square kilometers—can prove significant
for the inclusion of the nation as an observer member of the
Arctic Council, the international cooperation body on
environmental strategies for the territory. The country should also
join the Svalbard Treaty, which not only recognizes Norway’s
sovereignty over the archipelago, but also grants access to the
area’s resources for signatory nations.
Internet: <agenciabrasil.ebc.com.br> (adapted).
According to text 1A1-II, judge the following item.
It is possible to infer from the text that only nations that are members of the Arctic Council are allowed to sign the Svalbard Treaty.
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Text 1A1-II
Brazil’s first scientific expedition to the Arctic aims to
explore the biodiversity of one of the planet’s coldest territories,
learn more about its ecological importance and its role in global
climate change, and contribute to its preservation.
The Brazilian team of scientists from the University of Brasília
and the Federal University of Minas Gerais has been in the
Svalbard archipelago—a section of the Arctic Circle that belongs
to Norway—since July 8.
According to the expert, research in the region is crucial in
monitoring relevant developments in Brazil as well as worldwide.
“What happens here in the Arctic affects Brazil, so we should
have the right to speak and vote, which is not happening.”
Brazil is the only among the ten largest global economies
without a voice on issues related to the region. Therefore,
Brazil’s scientific presence in the Arctic—a region covering
more than 16 million square kilometers—can prove significant
for the inclusion of the nation as an observer member of the
Arctic Council, the international cooperation body on
environmental strategies for the territory. The country should also
join the Svalbard Treaty, which not only recognizes Norway’s
sovereignty over the archipelago, but also grants access to the
area’s resources for signatory nations.
Internet: <agenciabrasil.ebc.com.br> (adapted).
According to text 1A1-II, judge the following item.
The first Brazilian expedition to the Arctic, as presented in the first paragraph, has a threefold objective.
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Internet: <comicskingdom.com/>.
Judge the item below according to the previous comic strip.
The expression “Bear in mind” (third box) is a synonym of overlook.
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Internet: <comicskingdom.com/>.
Judge the item below according to the previous comic strip.
In the third box of the comic strip, the adjective “mild” in “mild inflationary effect” has been used ironically.
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Internet: <comicskingdom.com/>.
Judge the item below according to the previous comic strip.
The mouse was disappointed at the new rules of the game because he could not buy the avenue he wanted.
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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.
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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 sentence “‘green’ hydrogen — produced using renewable energy sources to split water into its two component elements — costs roughly US$ 5” could be correctly rewritten as the use of renewable energy sources to separate water into its two component elements produces ‘green’ hydrogen, which costs about US$ 5.
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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.
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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 pronoun “their” (first sentence of the third paragraph) refers back to “plastic waste samples”.
Provas
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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.
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