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Use os filtros para chegar às questões que interessam. Cada resultado abre em uma página própria com enunciado, alternativas e gabarito.

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Resultados: 58.062 questões

Página 2.110 de 2.904

  • Linguagens

    Português

    Leia o texto a seguir para responder a questão

          Um humano sai em busca de um mamute, persegue-o durante o dia, arma a emboscada e, depois de inúmeras tentativas, consegue matá-lo e abocanhar seu quinhão de carne.
          Em seguida, exausto, volta para casa com o firme propósito de deitar e rolar no tapete com o filho, contar historinhas repetitivas e ignorar a bronca merecida do pimpolho, pois, afinal, trata-se de um pai/mãe ausente o dia todo.
          Antes de dormir, ainda se verá no espelho com um olhar de feroz reprovação pela falta de tempo e de pique para a ginástica, para o sexo e para a vida social.
      Bem-vindo à geração cem por cento, que acredita que pode e deve dar conta de tudo e de fazer escolhas que não impliquem perdas.
          Uma aluna comentou esse fenômeno sabiamente: "Escolha sua perda!". Sim, é disso que se trata. Uma ínfima parcela da população pode se dar ao luxo de não ter que caçar seu mamute diariamente. Além disso, temos outras aspirações, que nos fazem mais do que caçadores, que nos fazem humanos.
      Ainda assim, somos assombrados pela ideia de que nossos filhos serão traumatizados pela nossa ausência. Aqui funciona a lógica de que pai e mãe são oxigênio, de que qualquer outro adulto cuidando deles será fatal. [...]
          Nossos filhos viverão em média 4 a 5 décadas mais do que nós -ou seja, os deixaremos órfãos, na melhor das hipóteses. Ausência fundamental que marca o sentido da parentalidade, pois acarreta criar sujeitos rumo à autonomia.
    [...]
       Há, ainda, outras ausências, menos radicais do que a morte, com as quais devemos aprender a lidar. Ausentamonos trabalhando, amando outras pessoas, amando outras coisas e amando a nós mesmos. [...] Ninguém merece ser tudo para um pai ou uma mãe. Por outro lado, nenhum adulto merece criar uma criança sem ajuda, sem respiro, tendo que gostar de brincar por obrigação. [...]
          A tarefa parental é imensa e vitalícia. Será exercida por quem assumir essa responsabilidade radical, não cabendo aqui fazer diferença entre homens e mulheres, pais e mães. Quem tomar para si essa missão só poderá cumpri-la a partir de suas escolhas e consequentes perdas, sem fazer da parentalidade um poço de ressentimento e culpas, cuja conta quem paga são os filhos.
          Então, façamos a lição de casa. O que realmente é possível para cada família específica, para além de um mundo fantasioso no qual os pais se dedicariam integralmente aos filhos como se isso fosse bom para as crianças? Perguntemo-nos também o que é desejável para nós, pois a presença ressentida não passa desapercebida aos pequenos.
          Ao deixá-los com outros, sejam familiares ou profissionais, cabe assumir essa escolha, não valendo controlar à distância avós, babás e professores, o que é enlouquecedor. Enfim, escolha sua perda e aprenda a se ausentar.
    (Folha de São Paulo, VERA IACONELLI, 10 set. 2017, com adaptações). 
    Assinale a alternativa na qual a regência do verbo “implicar” é a mesma da empregada no trecho: “que acredita que pode e deve dar conta de tudo e de fazer escolhas que não impliquem perdas”
    Escolha uma alternativa para a questão bdf5ba9c-ff
  • Linguagens

    Literatura

    Assinale a alternativa características do simbolismo.
    Escolha uma alternativa para a questão bdf88629-ff
  • Ciências Humanas

    Geografia

    Considerando a estrutura da atmosfera e sua dinâmica, é correto afirmar:

    Imagem da questão de Geografia, IF-BA 2012, Clima
    Escolha uma alternativa para a questão bdfb9344-e5
  • Linguagens

    Inglês

    Can talking on a mobile phone be hazardous to your health? It is difficult to know for sure. Some research suggests that heavy users of mobile phones are at a greater risk of developing cancerous brain tumours. However, many other studies suggest there are no links between cancer and mobile phone use.

    The main problem with the current research is that mobile phones have only been popular since the 1990s. As a result, it is impossible to study long-term exposure to mobile phones. This concerns many health professionals who point out that certain cancers can take over twenty years to develop. Another concern about these studies is that many have been funded by the mobile phone industry or those who benefit from it.

    Over five billion people now use mobile phones on a daily basis, and many talk for more than an hour a day. Mobile phone antennas are similar to microwave ovens. While both rely on electromagnetic radiation (EMR), the radio waves in mobile phones are lower in frequency. Microwave ovens have radio wave frequencies that are high enough to cook food, and they are also known to be dangerous to human tissues like those in the brain. The concern is that the lowerfrequency radio waves that mobile phones rely on may also be dangerous. It seems logical that holding a heat source near your brain for a long period of time is a potential health hazard.

    Some researchers believe that other types of wireless technology may also be dangerous to human health, including cordless phones, wireless gaming consoles, and laptop or tablet computers with wireless connections. They suggest replacing all cordless and wireless devices with wired ones where possible. They also say that many cordless phones can emit dangerous levels of Electromagnetic Radiation even when they are not in use. They even suggest keeping electronic devices such as desktop and tablet computers out of the bedroom, or at least six feet from the head while we're sleeping.

    A growing number of health professionals worldwide are recommending that mobile phone users err on the side of caution until more definitive studies can be conducted. They use the example of tobacco to illustrate the potential risks. Many years ago, people smoked freely and were not concerned about the effects of cigarettes on their health. Today, people know that cigarettes cause lung cancer, though it is still unknown exactly how or why. Some doctors fear that the same thing will happen with mobile phones. In May 2016, the UK's Independent newspaper reported on research by the US government's National Toxicology Program that showed a slight increase in brain tumours among rats exposed to the type of radio frequencies commonly emitted by mobile phones. This doesn't prove that mobile phones can cause brain tumours in humans, but it does show that it's possible. As a result, many experts now recommend texting or using head sets or speaker phones instead of holding a mobile phone to the ear.

    (Source: https://www.englishclub.com/reading/health/cell-phone.htm)

    The main objective of the article is to:
    Escolha uma alternativa para a questão bdfe2c1f-ff
  • Linguagens

    Inglês

    Can talking on a mobile phone be hazardous to your health? It is difficult to know for sure. Some research suggests that heavy users of mobile phones are at a greater risk of developing cancerous brain tumours. However, many other studies suggest there are no links between cancer and mobile phone use.

    The main problem with the current research is that mobile phones have only been popular since the 1990s. As a result, it is impossible to study long-term exposure to mobile phones. This concerns many health professionals who point out that certain cancers can take over twenty years to develop. Another concern about these studies is that many have been funded by the mobile phone industry or those who benefit from it.

    Over five billion people now use mobile phones on a daily basis, and many talk for more than an hour a day. Mobile phone antennas are similar to microwave ovens. While both rely on electromagnetic radiation (EMR), the radio waves in mobile phones are lower in frequency. Microwave ovens have radio wave frequencies that are high enough to cook food, and they are also known to be dangerous to human tissues like those in the brain. The concern is that the lowerfrequency radio waves that mobile phones rely on may also be dangerous. It seems logical that holding a heat source near your brain for a long period of time is a potential health hazard.

    Some researchers believe that other types of wireless technology may also be dangerous to human health, including cordless phones, wireless gaming consoles, and laptop or tablet computers with wireless connections. They suggest replacing all cordless and wireless devices with wired ones where possible. They also say that many cordless phones can emit dangerous levels of Electromagnetic Radiation even when they are not in use. They even suggest keeping electronic devices such as desktop and tablet computers out of the bedroom, or at least six feet from the head while we're sleeping.

    A growing number of health professionals worldwide are recommending that mobile phone users err on the side of caution until more definitive studies can be conducted. They use the example of tobacco to illustrate the potential risks. Many years ago, people smoked freely and were not concerned about the effects of cigarettes on their health. Today, people know that cigarettes cause lung cancer, though it is still unknown exactly how or why. Some doctors fear that the same thing will happen with mobile phones. In May 2016, the UK's Independent newspaper reported on research by the US government's National Toxicology Program that showed a slight increase in brain tumours among rats exposed to the type of radio frequencies commonly emitted by mobile phones. This doesn't prove that mobile phones can cause brain tumours in humans, but it does show that it's possible. As a result, many experts now recommend texting or using head sets or speaker phones instead of holding a mobile phone to the ear.

    (Source: https://www.englishclub.com/reading/health/cell-phone.htm)

    In the first paragraph, the word however tells the reader that the following sentence will:
    Escolha uma alternativa para a questão be00f8cc-ff
  • Linguagens

    Inglês

    Can talking on a mobile phone be hazardous to your health? It is difficult to know for sure. Some research suggests that heavy users of mobile phones are at a greater risk of developing cancerous brain tumours. However, many other studies suggest there are no links between cancer and mobile phone use.

    The main problem with the current research is that mobile phones have only been popular since the 1990s. As a result, it is impossible to study long-term exposure to mobile phones. This concerns many health professionals who point out that certain cancers can take over twenty years to develop. Another concern about these studies is that many have been funded by the mobile phone industry or those who benefit from it.

    Over five billion people now use mobile phones on a daily basis, and many talk for more than an hour a day. Mobile phone antennas are similar to microwave ovens. While both rely on electromagnetic radiation (EMR), the radio waves in mobile phones are lower in frequency. Microwave ovens have radio wave frequencies that are high enough to cook food, and they are also known to be dangerous to human tissues like those in the brain. The concern is that the lowerfrequency radio waves that mobile phones rely on may also be dangerous. It seems logical that holding a heat source near your brain for a long period of time is a potential health hazard.

    Some researchers believe that other types of wireless technology may also be dangerous to human health, including cordless phones, wireless gaming consoles, and laptop or tablet computers with wireless connections. They suggest replacing all cordless and wireless devices with wired ones where possible. They also say that many cordless phones can emit dangerous levels of Electromagnetic Radiation even when they are not in use. They even suggest keeping electronic devices such as desktop and tablet computers out of the bedroom, or at least six feet from the head while we're sleeping.

    A growing number of health professionals worldwide are recommending that mobile phone users err on the side of caution until more definitive studies can be conducted. They use the example of tobacco to illustrate the potential risks. Many years ago, people smoked freely and were not concerned about the effects of cigarettes on their health. Today, people know that cigarettes cause lung cancer, though it is still unknown exactly how or why. Some doctors fear that the same thing will happen with mobile phones. In May 2016, the UK's Independent newspaper reported on research by the US government's National Toxicology Program that showed a slight increase in brain tumours among rats exposed to the type of radio frequencies commonly emitted by mobile phones. This doesn't prove that mobile phones can cause brain tumours in humans, but it does show that it's possible. As a result, many experts now recommend texting or using head sets or speaker phones instead of holding a mobile phone to the ear.

    (Source: https://www.englishclub.com/reading/health/cell-phone.htm)

    In the fourth paragraph, the modal verb may expresses:
    Escolha uma alternativa para a questão be04bdd3-ff
  • Linguagens

    Inglês

    Can talking on a mobile phone be hazardous to your health? It is difficult to know for sure. Some research suggests that heavy users of mobile phones are at a greater risk of developing cancerous brain tumours. However, many other studies suggest there are no links between cancer and mobile phone use.

    The main problem with the current research is that mobile phones have only been popular since the 1990s. As a result, it is impossible to study long-term exposure to mobile phones. This concerns many health professionals who point out that certain cancers can take over twenty years to develop. Another concern about these studies is that many have been funded by the mobile phone industry or those who benefit from it.

    Over five billion people now use mobile phones on a daily basis, and many talk for more than an hour a day. Mobile phone antennas are similar to microwave ovens. While both rely on electromagnetic radiation (EMR), the radio waves in mobile phones are lower in frequency. Microwave ovens have radio wave frequencies that are high enough to cook food, and they are also known to be dangerous to human tissues like those in the brain. The concern is that the lowerfrequency radio waves that mobile phones rely on may also be dangerous. It seems logical that holding a heat source near your brain for a long period of time is a potential health hazard.

    Some researchers believe that other types of wireless technology may also be dangerous to human health, including cordless phones, wireless gaming consoles, and laptop or tablet computers with wireless connections. They suggest replacing all cordless and wireless devices with wired ones where possible. They also say that many cordless phones can emit dangerous levels of Electromagnetic Radiation even when they are not in use. They even suggest keeping electronic devices such as desktop and tablet computers out of the bedroom, or at least six feet from the head while we're sleeping.

    A growing number of health professionals worldwide are recommending that mobile phone users err on the side of caution until more definitive studies can be conducted. They use the example of tobacco to illustrate the potential risks. Many years ago, people smoked freely and were not concerned about the effects of cigarettes on their health. Today, people know that cigarettes cause lung cancer, though it is still unknown exactly how or why. Some doctors fear that the same thing will happen with mobile phones. In May 2016, the UK's Independent newspaper reported on research by the US government's National Toxicology Program that showed a slight increase in brain tumours among rats exposed to the type of radio frequencies commonly emitted by mobile phones. This doesn't prove that mobile phones can cause brain tumours in humans, but it does show that it's possible. As a result, many experts now recommend texting or using head sets or speaker phones instead of holding a mobile phone to the ear.

    (Source: https://www.englishclub.com/reading/health/cell-phone.htm)

    Considering the text, fill the parenthesis with T (true) or F (false):

    ( ) One of the problems of current research on the hazards of mobile phones is that they have been popular for too long, which creates a lot of data do be analyzed.
    ( ) Regarding the risks mobile phones can pose to our health, health professionals worldwide believe it is better to be cautious until more conclusive research is conducted.
    ( ) The frequency used by mobile phones is significantly higher than the frequency of microwaves, hence the health problems.
    ( ) Health professionals use the example of the tobacco industry to illustrate that mobile phones can be dangerous, even though research is still not conclusive on that.

    The correct sequence, from top to bottom is:
    Escolha uma alternativa para a questão be07a7ce-ff
  • Ciências Humanas

    História

    O mosteiro deve ser construído de tal forma que tudo o necessário (a água, o moinho, o jardim e os vários ofícios) exerce-se no interior do mosteiro, de modo que os monges não sejam obrigados a correr para todos os lados de fora, pois isso não é nada bom para suas almas. (Da Regra elaborada por São Bento, fundador da ordem dos beneditinos, em meados do século VI.) O texto revela
    Escolha uma alternativa para a questão be08c123-66
  • Linguagens

    Inglês

    Can talking on a mobile phone be hazardous to your health? It is difficult to know for sure. Some research suggests that heavy users of mobile phones are at a greater risk of developing cancerous brain tumours. However, many other studies suggest there are no links between cancer and mobile phone use.

    The main problem with the current research is that mobile phones have only been popular since the 1990s. As a result, it is impossible to study long-term exposure to mobile phones. This concerns many health professionals who point out that certain cancers can take over twenty years to develop. Another concern about these studies is that many have been funded by the mobile phone industry or those who benefit from it.

    Over five billion people now use mobile phones on a daily basis, and many talk for more than an hour a day. Mobile phone antennas are similar to microwave ovens. While both rely on electromagnetic radiation (EMR), the radio waves in mobile phones are lower in frequency. Microwave ovens have radio wave frequencies that are high enough to cook food, and they are also known to be dangerous to human tissues like those in the brain. The concern is that the lowerfrequency radio waves that mobile phones rely on may also be dangerous. It seems logical that holding a heat source near your brain for a long period of time is a potential health hazard.

    Some researchers believe that other types of wireless technology may also be dangerous to human health, including cordless phones, wireless gaming consoles, and laptop or tablet computers with wireless connections. They suggest replacing all cordless and wireless devices with wired ones where possible. They also say that many cordless phones can emit dangerous levels of Electromagnetic Radiation even when they are not in use. They even suggest keeping electronic devices such as desktop and tablet computers out of the bedroom, or at least six feet from the head while we're sleeping.

    A growing number of health professionals worldwide are recommending that mobile phone users err on the side of caution until more definitive studies can be conducted. They use the example of tobacco to illustrate the potential risks. Many years ago, people smoked freely and were not concerned about the effects of cigarettes on their health. Today, people know that cigarettes cause lung cancer, though it is still unknown exactly how or why. Some doctors fear that the same thing will happen with mobile phones. In May 2016, the UK's Independent newspaper reported on research by the US government's National Toxicology Program that showed a slight increase in brain tumours among rats exposed to the type of radio frequencies commonly emitted by mobile phones. This doesn't prove that mobile phones can cause brain tumours in humans, but it does show that it's possible. As a result, many experts now recommend texting or using head sets or speaker phones instead of holding a mobile phone to the ear.

    (Source: https://www.englishclub.com/reading/health/cell-phone.htm)

    From the sentence “mobile phones have only been popular since the 1990s", it is possible to understand that:
    Escolha uma alternativa para a questão be0a8eac-ff
  • Linguagens

    Inglês

    Figura 1 de 5 da questão de Inglês, UECE 2011, Interpretação de texto | Reading comprehension
    Figura 2 de 5 da questão de Inglês, UECE 2011, Interpretação de texto | Reading comprehension
    Figura 3 de 5 da questão de Inglês, UECE 2011, Interpretação de texto | Reading comprehension
    Figura 4 de 5 da questão de Inglês, UECE 2011, Interpretação de texto | Reading comprehension
    Figura 5 de 5 da questão de Inglês, UECE 2011, Interpretação de texto | Reading comprehension


    Ms. Rowe‘s students are excited about
    Escolha uma alternativa para a questão be0b27c1-ab
  • Ciências da Natureza

    Física

    As mídias ópticas CD, DVD e Blu-ray são constituídas por um material que reflete a luz incidente de um laser. A gravação de informações é realizada produzindo-se ranhuras sobre a superfície da mídia, conforme ilustra a figura, de modo que os raios incidente e refletido causarão interferência construtiva ou destrutiva, produzindo os bits 0 e 1, respectivamente.

    Imagem da questão de Física, UFG 2010, Ondas e Propriedades Ondulatórias

    Considerando que o comprimento de onda da luz do laser é λ e que a mídia é recoberta por um material plástico transparente de índice de refração n, a menor profundidade das ranhuras que produzem o bit 1 é
    Escolha uma alternativa para a questão be0b314a-58
  • Ciências da Natureza

    Química

    A figura abaixo mostra um garoto brincando com bexigas.

    Imagem da questão de Química, UFT 2012, Sistemas Gasosos - Lei, Teoria Cinética, Equação e Mistura dos Gases. Princípio de Avogadro.

    Sabendo-se que o volume molar de um gás ao nível do mar a 25º C é 25 L mol -1 e a densidade do ar atmosférico é 1,2 g L-1 .

    Quais são os gases que as bexigas A e B podem conter, respectivamente:

    Escolha uma alternativa para a questão be0be8fb-0a
  • Matemática

    Matemática

    Analise as sentenças abaixo e assinale a única correta.

    I- Os poliedros são formas espaciais sólidas delimitadas por superfícies planas poligonais. Uma superfície poligonal corresponde a um polígono reunido com a parte do plano em seu interior.
    II- Os poliedros possuem algumas características e uma delas é que eles são limitados por superfícies planas poligonais chamadas de faces do poliedro.
    III- As superfícies poligonais que delimitam o poliedro interceptam-se em lados dos polígonos. Esses segmentos são chamados de arestas do Poliedro.
    IV-O cubo é um poliedro cujas arestas constam com diferentes tamanhos em um único cubo.
    Escolha uma alternativa para a questão be0d704e-ff
  • Linguagens

    Inglês

    Imagem da questão de Inglês, UFT 2011, Interpretação de texto | Reading comprehension

    Judge the sentences according to the text:

    I. Fiona is an example of someone who became ill because of a relationship breaking down.

    II. In the sentence "She ended up weighing just six stone when she passed away when I was 21," the expression "passed away" can be replaced by died.

    III. To the experts, the growing numbers of women developing anorexia or bulimia in adulthood is due to the fact that some women in their 40s or 50s refuse to look young like Madonna and Sharon Stone do.

    IV. Bulimia and anorexia are examples of crippling conditions that threaten adults‘ health if they are under these vulnerable conditions: moving to another place, starting a new career, or seeing children become homeless people.

    V. In the following extract "In one case the husband‘s parting words to her were a derogatory comment about her weight," the underlined words are used, respectively, as an object pronoun and as a possessive adjective.
    Escolha uma alternativa para a questão be0e7daa-6d
  • Ciências da Natureza

    Biologia

    O conhecido “teste do pezinho”, cuja obrigatoriedade para todo o território brasileiro consta no Estatuto da Criança e do Adolescente, é realizado com uma gota de sangue retirada do pé dos recém-nascidos. Esse procedimento permite detectar os portadores da fenilcetonúria, doença genética recessiva.

    As pessoas com essa anomalia são incapazes de produzir uma enzima que atua na transformação do aminoácido fenilalanina, no aminoácido tirosina. Sem essa conversão a fenilalanina acumula-se no sangue e é convertida em substância tóxica, que provoca lesões no sistema nervoso, principalmente na infância, culminando com o retardo mental do portador.

    Considerando o nascimento de uma menina fenilcetonúrica, flha de pais saudáveis, que não apresentam essa doença, é correto afrmar que
    Escolha uma alternativa para a questão be0ec0b0-b9
  • Linguagens

    Português

    Imagem da questão de Português, ENEM 2011, Interpretação de Textos

    O anúncio publicitário está intimamente ligado ao ideário de consumo quando sua função é vender um produto. No texto apresentado, utilizam-se elementos linguísticos e extralinguísticos para divulgar a atração “Noites do Terror” , de um parque de diversões. O entendimento da propaganda requer do leitor
    Escolha uma alternativa para a questão be0fddb0-88
  • Matemática

    Matemática

    Das afirmações abaixo, assinale a única que está INCORRETA.
    Escolha uma alternativa para a questão be1036de-ff
  • Matemática

    Matemática

    Estudando probabilidade, Vicente se deparou com uma relação de quatro exercícios já resolvidos. Após conferência dos cálculos, descobriu um erro no exercício citado na alternativa:
    Escolha uma alternativa para a questão be12de50-ff
  • Matemática

    Matemática

    Monique brincava com um dado quando resolveu analisar a probabilidade de tirar um número primo ao jogar o objeto para cima. Verificando o dado após sua jogada, foi obtida face com número maior que 2. Logo, a probabilidade deste número ser primo está na alternativa:
    Escolha uma alternativa para a questão be15944d-ff
  • Ciências Humanas

    História

    Com a leitura dos dois textos seguintes, que analisam a escravidão, fica demonstrado que:


    Texto I

    “Na simbologia européia da Idade Média, a cor branca estava associada ao dia, à inocência, a virgindade; já a cor preta representava a noite, os demônios, a tristeza e a maldição divina. Essa dicotomia entre branco e preto, claro e escuro, foi transferida pelos europeus para os seres humanos quando os portugueses chegaram à África em meados do século XV. [...] Assim, a pigmentação escura da pele foi inicialmente apontada como uma doença ou um desvio da norma. Como os africanos apresentavam ainda traços físicos, crenças religiosas, costumes e hábitos culturais diferentes dos que predominavam na Europa, autores europeus passaram a caracterizá-los como seres situados entre os humanos e os animais. Todas essas visões eurocêntricas fizeram com que os negros fossem considerados culturalmente inferiores e propensos à escravidão [...]”

    AZEVEDO, Gislane Campos; SERIACOPI, Reinaldo. História. São Paulo: Ática, 2008, p.199.

    Texto II

    “Desde os cinco anos merecera eu a alcunha de ‘menino diabo’; e verdadeiramente não era outra coisa; fui dos mais malignos do meu tempo, arguto, indiscreto, traquinas e voluntarioso. Por exemplo, um dia quebrei a cabeça de uma escrava, porque me negara uma colher do doce de coco que estava fazendo, e, não contente com o malefício, deitei um punhado de cinza ao tacho, e, não satisfeito da travessura, fui dizer à minha mãe que a escrava é que estragara o doce ‘por pirraça’; e eu tinha apenas seis anos. Prudêncio, um moleque de casa, era o meu cavalo de todos os dias; punha as mãos no chão, recebia um cordel nos queixos, à guisa de freio, eu trepava-lhe ao dorso, com uma varinha na mão, fustigava-o, dava mil voltas a um e outro lado, e ele obedecia, - algumas vezes gemendo, - mas obedecia sem dizer palavra, ou, quando muito, um – ‘ai, nhonhô!’ - ao que eu retorquia: - ‘Cala a boca, besta!’ ”

    ASSIS, Machado. Memórias Póstumas de Brás-Cubas. São Paulo: Globo, 2008, p.62.
    Escolha uma alternativa para a questão be15ebbf-58