Foram encontradas 884 questões.
CB1A3-I
“O chefe não me falou sobre isso, mas, se eu for convidado, aceitarei a tarefa.”
Assinale a opção que apresenta uma negação da proposição CB1A3-I.
Provas
CB1A3-I
“O chefe não me falou sobre isso, mas, se eu for convidado, aceitarei a tarefa.”
Supondo verdadeira a proposição CB1A3-I, assinale a opção que apresenta uma proposição também verdadeira.
Provas
A exorbitante onda de calor que nos atingiu este mês veio fora dos padrões. Sua extensão, sua força e sua duração escapam aos parâmetros. Praticamente o território nacional inteiro foi assolado. Fenômenos atmosféricos têm se tornado cada vez mais extremos e mais frequentes desde que entramos no novo milênio. Incêndios florestais na Sibéria, temperatura saariana na Inglaterra, inundações devastadoras no Rio Grande do Sul, furacões com ventos de 300 km/h, sensação de 60 °C no Rio — são eventos extremos que se multiplicam e preocupam autoridades e governos do mundo inteiro.
Provas
Em relação a aspectos linguísticos do texto CB1A1-I, julgue os itens a seguir.
- A correção gramatical e os sentidos do texto estariam preservados caso o pronome “a”, em “reduzindo-a” (no primeiro período do segundo parágrafo) fosse colocado antes do verbo: a reduzindo.
- A substituição da expressão “próximo inverno” (no segundo período do primeiro parágrafo) por inverno próximo manteria a correção gramatical do texto e o seu sentido original.
- A substituição das formas verbais “fica” e “é” (ambas no primeiro período do segundo parágrafo) por ficaria e seria preservaria a correlação entre as formas verbais e a coesão temporal do período.
Assinale a opção correta.
Provas
Text 18A3-I
The roar of a waterfall suggests the power of water. Rampaging floodwaters can uproot strong trees and twist railroad tracks. When the power of water is harnessed, however, it can do useful work for humans.
Since ancient times, people have put the energy in the flow of water to work. They first made water work for them with the waterwheel, a wheel with paddles around its rim. Flowing water rotated the waterwheel, which in turn ran machinery that was linked to it. Today, new kinds of waterwheels – turbines – spin generators that produce electricity. Electricity from waterturned generators is known as hydroelectricity.
By building a dam across a river, the natural upstream water level is elevated and a difference in head is created that can be used to drive turbines and generate electricity. A large upstream reservoir may balance seasonal water flow; rain or melted snow can be stored in the reservoir during the wet season to provide electricity during dry seasons.
Waterpower is distributed unevenly among the continents and nations of the world. Europe and North America have developed much of their waterpower. Asia, South America, and Africa have abundant waterpower potential, but while countries such as China and Brazil have become leading hydroelectric producers, much of the waterpower resource on those continents remains undeveloped.
Elizabeth Lachner. Hydroelectricity. Rosen Publishing Group, 2018 (adapted).
Maintaining the original meaning of text 18A3-I, the fragment “Today, new kinds of waterwheels—turbines—spin generators that produce electricity” (fourth sentence of the second paragraph) could be correctly replaced with
Provas
Text 18A3-I
The roar of a waterfall suggests the power of water. Rampaging floodwaters can uproot strong trees and twist railroad tracks. When the power of water is harnessed, however, it can do useful work for humans.
Since ancient times, people have put the energy in the flow of water to work. They first made water work for them with the waterwheel, a wheel with paddles around its rim. Flowing water rotated the waterwheel, which in turn ran machinery that was linked to it. Today, new kinds of waterwheels – turbines – spin generators that produce electricity. Electricity from waterturned generators is known as hydroelectricity.
By building a dam across a river, the natural upstream water level is elevated and a difference in head is created that can be used to drive turbines and generate electricity. A large upstream reservoir may balance seasonal water flow; rain or melted snow can be stored in the reservoir during the wet season to provide electricity during dry seasons.
Waterpower is distributed unevenly among the continents and nations of the world. Europe and North America have developed much of their waterpower. Asia, South America, and Africa have abundant waterpower potential, but while countries such as China and Brazil have become leading hydroelectric producers, much of the waterpower resource on those continents remains undeveloped.
Elizabeth Lachner. Hydroelectricity. Rosen Publishing Group, 2018 (adapted).
In the first paragraph of text 18A3-I, the expression which best suggests an image of the power of man over rivers is
Provas
Text 18A3-I
The roar of a waterfall suggests the power of water. Rampaging floodwaters can uproot strong trees and twist railroad tracks. When the power of water is harnessed, however, it can do useful work for humans.
Since ancient times, people have put the energy in the flow of water to work. They first made water work for them with the waterwheel, a wheel with paddles around its rim. Flowing water rotated the waterwheel, which in turn ran machinery that was linked to it. Today, new kinds of waterwheels – turbines – spin generators that produce electricity. Electricity from waterturned generators is known as hydroelectricity.
By building a dam across a river, the natural upstream water level is elevated and a difference in head is created that can be used to drive turbines and generate electricity. A large upstream reservoir may balance seasonal water flow; rain or melted snow can be stored in the reservoir during the wet season to provide electricity during dry seasons.
Waterpower is distributed unevenly among the continents and nations of the world. Europe and North America have developed much of their waterpower. Asia, South America, and Africa have abundant waterpower potential, but while countries such as China and Brazil have become leading hydroelectric producers, much of the waterpower resource on those continents remains undeveloped.
Elizabeth Lachner. Hydroelectricity. Rosen Publishing Group, 2018 (adapted).
In the third sentence of the second paragraph of text 18A3-I, the pronouns “which” and “it” are both replacing
Provas
Text 18A3-I
The roar of a waterfall suggests the power of water. Rampaging floodwaters can uproot strong trees and twist railroad tracks. When the power of water is harnessed, however, it can do useful work for humans.
Since ancient times, people have put the energy in the flow of water to work. They first made water work for them with the waterwheel, a wheel with paddles around its rim. Flowing water rotated the waterwheel, which in turn ran machinery that was linked to it. Today, new kinds of waterwheels – turbines – spin generators that produce electricity. Electricity from waterturned generators is known as hydroelectricity.
By building a dam across a river, the natural upstream water level is elevated and a difference in head is created that can be used to drive turbines and generate electricity. A large upstream reservoir may balance seasonal water flow; rain or melted snow can be stored in the reservoir during the wet season to provide electricity during dry seasons.
Waterpower is distributed unevenly among the continents and nations of the world. Europe and North America have developed much of their waterpower. Asia, South America, and Africa have abundant waterpower potential, but while countries such as China and Brazil have become leading hydroelectric producers, much of the waterpower resource on those continents remains undeveloped.
Elizabeth Lachner. Hydroelectricity. Rosen Publishing Group, 2018 (adapted).
The expression “The roar of a waterfall” (first sentence of text 18A3-I), is more closely related to the sense of
Provas
Assinale a opção que indica o nome dado ao tipo de comunicação que representa a adoção, pelas organizações, de uma filosofia de comunicação não fragmentada, em um contexto mais amplo e complexo, que leve em conta as demandas, os interesses e as exigências dos públicos e da sociedade.
Provas
Em uma definição ampla, no âmbito do jornalismo, as fake news são
Provas
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