Questões do ENEM: Interpretação de texto | Reading comprehension

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

Resultados

4.335 questões encontradas. Mostrando a página 177 de 217.

  • 8DDFF86F-DC

    Inglês

    Interpretação de texto | Reading comprehension
    UFRN · 2011DifícilEntre para guardar nos favoritos
    Imagem da questão de Inglês, da prova de 2011
    Segundo o texto, o serviço de banda larga em áreas remotas pode
    Escolha uma alternativa para a questão 8ddff86f-dc
  • 8DDB77A7-DC

    Inglês

    Interpretação de texto | Reading comprehension
    UFRN · 2011DifícilEntre para guardar nos favoritos
    Imagem da questão de Inglês, da prova de 2011
    As políticas regulatórias mencionadas no texto têm por função
    Escolha uma alternativa para a questão 8ddb77a7-dc
  • 8DD83A89-DC

    Inglês

    Interpretação de texto | Reading comprehension
    UFRN · 2011DifícilEntre para guardar nos favoritos
    Imagem da questão de Inglês, da prova de 2011
    O termo “banda larga” é usado no texto para referir-se a
    Escolha uma alternativa para a questão 8dd83a89-dc
  • 8DD4C7F8-DC

    Inglês

    Interpretação de texto | Reading comprehension
    UFRN · 2011MédioEntre para guardar nos favoritos
    Imagem da questão de Inglês, da prova de 2011
    Em relação à banda larga, todos os cidadãos estadunidenses devem ter
    Escolha uma alternativa para a questão 8dd4c7f8-dc
  • DBE4C70F-DC

    Inglês

    Interpretação de texto | Reading comprehension
    Universidade Federal do Pará · 2011MédioEntre para guardar nos favoritos
    Water Availability and Access


    Water availability and access are key constraints to poverty reduction and food security. Maintaining enough water for agriculture of reasonable quality will be increasingly difficult due to climate change, competition for water with industries, urban uses and the environment, and the need to produce biofuels. Much of the world is faced with a situation where water supplies for various uses are overallocated, with river flows much reduced, groundwater levels dropping, and important ecosystems threatened - a situation of physical water scarcity. Much of this is driven by agricultural water use. In other parts of the world, availability of water in rivers, wetlands, and aquifers is ample, but access is difficult because people have not found means to develop the water resource - a situation of economic water scarcity. Adaptive management strategies are required to balance decreasing availability with increasing demand, while coping with uncertainties. These include water allocation strategies, development of appropriate types of water storage ranging from small ponds to large reservoirs and from surface structures to managed aquifers, and adopting policies that provide incentives to use water differently. As new water infrastructure is a key strategy for improving secure access for agriculture, the theme considers various benefits and costs of infrastructural development. The overall aim is to maintain equity in water access, agricultural productivity, human health and environmental quality in the face of increasing water scarcity at local, basin and transboundary scales via development of adaptive management strategies, policy responses and tradeoffs.

    Source: http://www.iwmi.cgiar.org/research_impacts/Research_Themes/Theme_1/index.aspx 
    Analisando o texto, pode-se afirmar que a única alternativa correta relacionada ao tema é:
    Escolha uma alternativa para a questão dbe4c70f-dc
  • DBE1874A-DC

    Inglês

    Interpretação de texto | Reading comprehension
    Universidade Federal do Pará · 2011DifícilEntre para guardar nos favoritos
    Water Availability and Access


    Water availability and access are key constraints to poverty reduction and food security. Maintaining enough water for agriculture of reasonable quality will be increasingly difficult due to climate change, competition for water with industries, urban uses and the environment, and the need to produce biofuels. Much of the world is faced with a situation where water supplies for various uses are overallocated, with river flows much reduced, groundwater levels dropping, and important ecosystems threatened - a situation of physical water scarcity. Much of this is driven by agricultural water use. In other parts of the world, availability of water in rivers, wetlands, and aquifers is ample, but access is difficult because people have not found means to develop the water resource - a situation of economic water scarcity. Adaptive management strategies are required to balance decreasing availability with increasing demand, while coping with uncertainties. These include water allocation strategies, development of appropriate types of water storage ranging from small ponds to large reservoirs and from surface structures to managed aquifers, and adopting policies that provide incentives to use water differently. As new water infrastructure is a key strategy for improving secure access for agriculture, the theme considers various benefits and costs of infrastructural development. The overall aim is to maintain equity in water access, agricultural productivity, human health and environmental quality in the face of increasing water scarcity at local, basin and transboundary scales via development of adaptive management strategies, policy responses and tradeoffs.

    Source: http://www.iwmi.cgiar.org/research_impacts/Research_Themes/Theme_1/index.aspx 
    Com referência ao texto, pode-se concluir que a única opção correta relacionada ao tema é:
    Escolha uma alternativa para a questão dbe1874a-dc
  • 70B5A204-D8

    Inglês

    Interpretação de texto | Reading comprehension
    Universidade Estadual do Pará · 2011MédioEntre para guardar nos favoritos
    When stars disappear…


    One of the negative effects of industrialization on human activity and the environment is the production of excessive light. Most people do not consider the surplus of artificial light as a form of pollution because it is not permanent; all we must do is collectively turn out our lights to make it disappear. In reality, however, such a solution is unrealistic because our society needs artificial light to function. Light pollution is mainly caused by lighting systems that are misdirected, excessive, inefficient or unnecessary. The negative effects of light pollution on human activity are numerous. From an economic point of view, for example, the use of excessive lighting or unnecessary lighting constitutes a waste of energy that is costly to both the individual and to industries. On a larger scale, excessive lighting can have an impact on global climate change if the required electricity was generated by burning fossil fuels. Wildlife and plants are also affected. For example, nighttime lighting can confuse animals that migrate (like migratory birds), can modify predator-prey relationships, and can even alter competitiveness within the same species.

    It is even possible for entire ecosystems to be affected. In lakes, for example, zooplankton may stop feeding on algae if nighttime lighting is too strong. The result is excessive algae growth that eventually decomposes and causes an increase in bacterial activity. This leads to oxygen depletion in the lake, and many species of invertebrates and fish then die by asphyxiation. In astronomy, light pollution is a real and pressing problem. It diminishes the contrast between the dark sky and celestial sources of light, which makes it harder to see the stars. For professional astronomers, artificial light is undesirable because it interferes with the collection of data. This is why new observatories are built in isolated regions.

    Programs to reduce light pollution have been started up by several astronomical centres across Canada, including ASTROLab and the Mont-Mégantic Observatory, the David Dunlap Observatory in Toronto. A number of amateur astronomy associations are also involved in protecting our endangered legacy, the starry night sky. The focus of light pollution abatement programs is to change the habits of the general population, companies and urban planners so that less artificial light will be wasted or misdirected.
    Source: http://astro-canada.ca/_en/a3800.html
    Tendo como base medidas de combate à poluição, pode-se afirmar que a única alternativa que corresponde integralmente à ideia do texto é:
    Escolha uma alternativa para a questão 70b5a204-d8
  • 70AE1020-D8

    Inglês

    Interpretação de texto | Reading comprehension
    Universidade Estadual do Pará · 2011DifícilEntre para guardar nos favoritos
    When stars disappear…


    One of the negative effects of industrialization on human activity and the environment is the production of excessive light. Most people do not consider the surplus of artificial light as a form of pollution because it is not permanent; all we must do is collectively turn out our lights to make it disappear. In reality, however, such a solution is unrealistic because our society needs artificial light to function. Light pollution is mainly caused by lighting systems that are misdirected, excessive, inefficient or unnecessary. The negative effects of light pollution on human activity are numerous. From an economic point of view, for example, the use of excessive lighting or unnecessary lighting constitutes a waste of energy that is costly to both the individual and to industries. On a larger scale, excessive lighting can have an impact on global climate change if the required electricity was generated by burning fossil fuels. Wildlife and plants are also affected. For example, nighttime lighting can confuse animals that migrate (like migratory birds), can modify predator-prey relationships, and can even alter competitiveness within the same species.

    It is even possible for entire ecosystems to be affected. In lakes, for example, zooplankton may stop feeding on algae if nighttime lighting is too strong. The result is excessive algae growth that eventually decomposes and causes an increase in bacterial activity. This leads to oxygen depletion in the lake, and many species of invertebrates and fish then die by asphyxiation. In astronomy, light pollution is a real and pressing problem. It diminishes the contrast between the dark sky and celestial sources of light, which makes it harder to see the stars. For professional astronomers, artificial light is undesirable because it interferes with the collection of data. This is why new observatories are built in isolated regions.

    Programs to reduce light pollution have been started up by several astronomical centres across Canada, including ASTROLab and the Mont-Mégantic Observatory, the David Dunlap Observatory in Toronto. A number of amateur astronomy associations are also involved in protecting our endangered legacy, the starry night sky. The focus of light pollution abatement programs is to change the habits of the general population, companies and urban planners so that less artificial light will be wasted or misdirected.
    Source: http://astro-canada.ca/_en/a3800.html
    Com referência ao texto, pode-se concluir que a única opção correta relacionada ao tema é:
    Escolha uma alternativa para a questão 70ae1020-d8
  • 70A943B4-D8

    Inglês

    Interpretação de texto | Reading comprehension
    Universidade Estadual do Pará · 2011DifícilEntre para guardar nos favoritos
    When stars disappear…


    One of the negative effects of industrialization on human activity and the environment is the production of excessive light. Most people do not consider the surplus of artificial light as a form of pollution because it is not permanent; all we must do is collectively turn out our lights to make it disappear. In reality, however, such a solution is unrealistic because our society needs artificial light to function. Light pollution is mainly caused by lighting systems that are misdirected, excessive, inefficient or unnecessary. The negative effects of light pollution on human activity are numerous. From an economic point of view, for example, the use of excessive lighting or unnecessary lighting constitutes a waste of energy that is costly to both the individual and to industries. On a larger scale, excessive lighting can have an impact on global climate change if the required electricity was generated by burning fossil fuels. Wildlife and plants are also affected. For example, nighttime lighting can confuse animals that migrate (like migratory birds), can modify predator-prey relationships, and can even alter competitiveness within the same species.

    It is even possible for entire ecosystems to be affected. In lakes, for example, zooplankton may stop feeding on algae if nighttime lighting is too strong. The result is excessive algae growth that eventually decomposes and causes an increase in bacterial activity. This leads to oxygen depletion in the lake, and many species of invertebrates and fish then die by asphyxiation. In astronomy, light pollution is a real and pressing problem. It diminishes the contrast between the dark sky and celestial sources of light, which makes it harder to see the stars. For professional astronomers, artificial light is undesirable because it interferes with the collection of data. This is why new observatories are built in isolated regions.

    Programs to reduce light pollution have been started up by several astronomical centres across Canada, including ASTROLab and the Mont-Mégantic Observatory, the David Dunlap Observatory in Toronto. A number of amateur astronomy associations are also involved in protecting our endangered legacy, the starry night sky. The focus of light pollution abatement programs is to change the habits of the general population, companies and urban planners so that less artificial light will be wasted or misdirected.
    Source: http://astro-canada.ca/_en/a3800.html
    Qual é a única alternativa mencionada, no texto, como um dos efeitos negativos do excesso de luz artificial no planeta?
    Escolha uma alternativa para a questão 70a943b4-d8
  • 70A5378B-D8

    Inglês

    Interpretação de texto | Reading comprehension
    Universidade Estadual do Pará · 2011DifícilEntre para guardar nos favoritos
    When stars disappear…


    One of the negative effects of industrialization on human activity and the environment is the production of excessive light. Most people do not consider the surplus of artificial light as a form of pollution because it is not permanent; all we must do is collectively turn out our lights to make it disappear. In reality, however, such a solution is unrealistic because our society needs artificial light to function. Light pollution is mainly caused by lighting systems that are misdirected, excessive, inefficient or unnecessary. The negative effects of light pollution on human activity are numerous. From an economic point of view, for example, the use of excessive lighting or unnecessary lighting constitutes a waste of energy that is costly to both the individual and to industries. On a larger scale, excessive lighting can have an impact on global climate change if the required electricity was generated by burning fossil fuels. Wildlife and plants are also affected. For example, nighttime lighting can confuse animals that migrate (like migratory birds), can modify predator-prey relationships, and can even alter competitiveness within the same species.

    It is even possible for entire ecosystems to be affected. In lakes, for example, zooplankton may stop feeding on algae if nighttime lighting is too strong. The result is excessive algae growth that eventually decomposes and causes an increase in bacterial activity. This leads to oxygen depletion in the lake, and many species of invertebrates and fish then die by asphyxiation. In astronomy, light pollution is a real and pressing problem. It diminishes the contrast between the dark sky and celestial sources of light, which makes it harder to see the stars. For professional astronomers, artificial light is undesirable because it interferes with the collection of data. This is why new observatories are built in isolated regions.

    Programs to reduce light pollution have been started up by several astronomical centres across Canada, including ASTROLab and the Mont-Mégantic Observatory, the David Dunlap Observatory in Toronto. A number of amateur astronomy associations are also involved in protecting our endangered legacy, the starry night sky. The focus of light pollution abatement programs is to change the habits of the general population, companies and urban planners so that less artificial light will be wasted or misdirected.
    Source: http://astro-canada.ca/_en/a3800.html
    Analisando o texto, pode-se afirmar que a única alternativa correta relacionada ao tema é:
    Escolha uma alternativa para a questão 70a5378b-d8
  • F8224918-D8

    Inglês

    Interpretação de texto | Reading comprehension
    Universidade Presbiteriana Mackenzie · 2011DifícilEntre para guardar nos favoritos

    Imagem da questão de Inglês, da prova de 2011

    HOW EFFECTIVE IS YOUR TEACHERESE?
    By Stephan Hughes
        Why is it that most of our students whine that they are able to almost fully understand what we say in the classroom but when faced with English in a real-life situation, the level of comprehension falls to near bottom, leading to their puzzlement, frustration and despair (in that order)?
        Some reasons for the phenomenon: teachers use a special language called teacherese. It is tailored form of the English language, which allows students to follow and obtain at least a global comprehension of what is being uttered. The speed is toned down somewhat, the lexis is full of Portuguese-like cognates so as to help students make necessary associations and/or simultaneous translations. Its linguistic variation is limited, especially at lower proficiency levels.
        __( I )__ what is most noteworthy of teacherese is that its inability to stretch students’ listening skills may lie more in the fact that teachers, non-native in particular, barely use the rich idiomatic language that is used in magazines, newspapers, TV shows, movies, songs – in short, in real life situations that they usually face. The lexis may not necessarily be second nature to ELT professionals, __( II )__ its absence in everyday use in the classroom.
        Another reason: apart from using teacherese, most teachers don’t have any legitimate speaking opportunities outside of the classroom, __( III )__ reducing their oral skills to instructional and explanatory phrases or typical fixed expressions prescribed in the course book. Giving these educators opportunities to use the language naturally – be it in conversational settings arranged by the institutions or with native speakers in loco or online – may be crucial to whittle away at the problem.
        A third and final reason: familiarity breeds ease, which in turn breeds comprehension. The more time students stay with a said teacher, the easier it might be for them to understand them and get used to their accent, intonation, lexical choice and pace. This is a point that cannot be ignored and is worth looking into.
        __( IV )__ the question we need to ask ourselves is: how effective is the language we use in the classroom and to what extent this effectiveness plays a vital role in helping our students understand the world around them in English? __( V )__, in a communicative context, the teacher is but should not be the ultimate language model for the students, so students should not gauge their listening competence by the teacher. The catch is exposing students to more and more real language in the classroom and fostering effective listening strategies.
    Braz-Tesol Newsletter
    According to teacher Stephan Hughes,
    Escolha uma alternativa para a questão f8224918-d8
  • F81E8A28-D8

    Inglês

    Interpretação de texto | Reading comprehension
    Universidade Presbiteriana Mackenzie · 2011DifícilEntre para guardar nos favoritos
    The Murders in the Rue Morgue 
    By Edgar Allan Poe
    Imagem da questão de Inglês, da prova de 2011
        “…The apartment was in the wildest disorder - the furniture broken and thrown about in all directions. There was only one bedstead; and from this the bed had been removed, and thrown into the middle of the floor. On a chair lay a razor, besmeared with blood. On the hearth were two or three long and thick tresses of grey human hair, also dabbled in blood, and seeming to have been pulled out by the roots. Upon the floor were found four Napoleons, an ear-ring of topaz, three large silver spoons, three smaller of métal d’Alger, and two bags, containing nearly four thousand francs in gold. The drawers of a bureau, which stood in one corner, were open, and had been, apparently, rifled, although many articles still remained in them. A small iron safe was discovered under the bed (not under the bedstead). It was open, with the key still in the door. It had no contents beyond a few old letters, and other papers of little consequence.
        Of Madame L’Espanaye no traces were here seen; but an unusual quantity of soot being observed in the fire-place, a search was made in the chimney, and (horrible to relate!) the corpse of the daughter, head downward, was dragged therefrom; it having been thus forced up the narrow aperture for a considerable distance. The body was quite warm. Upon examining it, many excoriations were perceived, no doubt occasioned by the violence with which it had been thrust up and disengaged. Upon the face were many severe scratches, and, upon the throat, dark bruises, and deep indentations of finger nails, as if the deceased had been throttled to death.
        After a thorough investigation of every portion of the house, without farther discovery, the party made its way into a small paved yard in the rear of the building, where lay the corpse of the old lady, with her throat so entirely cut that, upon an attempt to raise her, the head fell off. The body, as well as the head, was fearfully mutilated - the former so much so as scarcely to retain any semblance of humanity.
        To this horrible mystery there is not as yet, we believe, the slightest clew…”
    Edgar Allan Poe – The Murders in the Rue Morgue
    The bodies found in the Rue Morgue,
    Escolha uma alternativa para a questão f81e8a28-d8
  • F81A31E9-D8

    Inglês

    Interpretação de texto | Reading comprehension
    Universidade Presbiteriana Mackenzie · 2011DifícilEntre para guardar nos favoritos
    The Murders in the Rue Morgue 
    By Edgar Allan Poe
    Imagem da questão de Inglês, da prova de 2011
        “…The apartment was in the wildest disorder - the furniture broken and thrown about in all directions. There was only one bedstead; and from this the bed had been removed, and thrown into the middle of the floor. On a chair lay a razor, besmeared with blood. On the hearth were two or three long and thick tresses of grey human hair, also dabbled in blood, and seeming to have been pulled out by the roots. Upon the floor were found four Napoleons, an ear-ring of topaz, three large silver spoons, three smaller of métal d’Alger, and two bags, containing nearly four thousand francs in gold. The drawers of a bureau, which stood in one corner, were open, and had been, apparently, rifled, although many articles still remained in them. A small iron safe was discovered under the bed (not under the bedstead). It was open, with the key still in the door. It had no contents beyond a few old letters, and other papers of little consequence.
        Of Madame L’Espanaye no traces were here seen; but an unusual quantity of soot being observed in the fire-place, a search was made in the chimney, and (horrible to relate!) the corpse of the daughter, head downward, was dragged therefrom; it having been thus forced up the narrow aperture for a considerable distance. The body was quite warm. Upon examining it, many excoriations were perceived, no doubt occasioned by the violence with which it had been thrust up and disengaged. Upon the face were many severe scratches, and, upon the throat, dark bruises, and deep indentations of finger nails, as if the deceased had been throttled to death.
        After a thorough investigation of every portion of the house, without farther discovery, the party made its way into a small paved yard in the rear of the building, where lay the corpse of the old lady, with her throat so entirely cut that, upon an attempt to raise her, the head fell off. The body, as well as the head, was fearfully mutilated - the former so much so as scarcely to retain any semblance of humanity.
        To this horrible mystery there is not as yet, we believe, the slightest clew…”
    Edgar Allan Poe – The Murders in the Rue Morgue
    The excerpt, from The Murders in the Rue Morgue by Edgar Allan Poe, is describing
    Escolha uma alternativa para a questão f81a31e9-d8
  • C905FEA2-BA

    Inglês

    Interpretação de texto | Reading comprehension
    UERJ · 2011FácilEntre para guardar nos favoritos

    In the third and fourth paragraphs, there are different sensory images, as in the fragment below:

    I breathed in the delicious smell of the steam rising from the pot. (l. 17 )

    In this fragment, the narrator makes use of the following type of imagery:

    Escolha uma alternativa para a questão c905fea2-ba
  • C8FDFF54-BA

    Inglês

    Interpretação de texto | Reading comprehension
    UERJ · 2011FácilEntre para guardar nos favoritos

    Imagem da questão de Inglês, da prova de 2011

    The first paragraph describes the terrible weather, the physical state of the narrator and his unfavorable view of the village and its inhabitants.

    From this beginning, one can infer that the narrator did not expect the peasants to:

    Escolha uma alternativa para a questão c8fdff54-ba
  • 9AB8C5E4-B6

    Inglês

    Interpretação de texto | Reading comprehension
    Instituto Federal de Educação, Ciência e Tecnologia - Goiás · 2011Muito difícilEntre para guardar nos favoritos

    Read text 3 to answer question. 


    Text 3  

    Imagem da questão de Inglês, da prova de 2011

    Available in: http://rio.movie-trailer.com/2010/05/riomovie-poster.html. Access on: May 02, 2011. 

    It is correct to affirm that:
    Escolha uma alternativa para a questão 9ab8c5e4-b6
  • 9AAE6C6E-B6

    Inglês

    Interpretação de texto | Reading comprehension
    Instituto Federal de Educação, Ciência e Tecnologia - Goiás · 2011Muito difícilEntre para guardar nos favoritos

    Read text 2 to answer question.


    Text 2

    For Obama, Big Rise in Poll Numbers After Bin Laden Raid 

        Support for President Obama has risen sharply following the killing of Osama bin Laden by American military forces in Pakistan. Support for the president rose significantly among both Republicans and independents.

        Among independents, his approval rating increased 11 points from last month, to 52 percent, while among Republicans it rose 15 points, to 24 percent. Among Democrats, 86 percent supported his job performance, compared with 79 percent in April.

        In all, 57 percent said they now approved of the president’s job performance, up from 46 percent last month. More than six in 10 Americans said that killing Bin Laden was likely to increase the threat of terrorism against the United States in the short term. Nearly half said the nation should decrease troop levels in Afghanistan, but more than six in 10 also said the United States had not completed its mission in Afghanistan.

    Adapted from: The New York Times. Available in http://www.nytimes.com/2011/05/05/us/politics/05poll.html ?hp. Access on: May 04, 2011. 

    According to the text, it is correct to affirm that:
    Escolha uma alternativa para a questão 9aae6c6e-b6
  • 9AA9DE8E-B6

    Inglês

    Interpretação de texto | Reading comprehension
    Instituto Federal de Educação, Ciência e Tecnologia - Goiás · 2011DifícilEntre para guardar nos favoritos

    Read text 2 to answer question.


    Text 2

    For Obama, Big Rise in Poll Numbers After Bin Laden Raid 

        Support for President Obama has risen sharply following the killing of Osama bin Laden by American military forces in Pakistan. Support for the president rose significantly among both Republicans and independents.

        Among independents, his approval rating increased 11 points from last month, to 52 percent, while among Republicans it rose 15 points, to 24 percent. Among Democrats, 86 percent supported his job performance, compared with 79 percent in April.

        In all, 57 percent said they now approved of the president’s job performance, up from 46 percent last month. More than six in 10 Americans said that killing Bin Laden was likely to increase the threat of terrorism against the United States in the short term. Nearly half said the nation should decrease troop levels in Afghanistan, but more than six in 10 also said the United States had not completed its mission in Afghanistan.

    Adapted from: The New York Times. Available in http://www.nytimes.com/2011/05/05/us/politics/05poll.html ?hp. Access on: May 04, 2011. 

    Analyze the statements below.

    I. The approval of president Obama’s government is higher after bin Laden’s death.
    II. Now, 52% of independents and 15% of Republicans support Obama’s government.
    III. The majority of the population believes terrorism will end because bin Laden is dead.
    IV. Most Americans believe the war in Afghanistan is no longer necessary.

    It is right to affirm that:
    Escolha uma alternativa para a questão 9aa9de8e-b6
  • 9AA55CD9-B6

    Inglês

    Aspectos linguísticos | Linguistic aspects
    Instituto Federal de Educação, Ciência e Tecnologia - Goiás · 2011DifícilEntre para guardar nos favoritos

    Read text 1 to answer question.


    Text 1  

    Imagem da questão de Inglês, da prova de 2011

    Newsweek. Available in http://www.newsweek.com/photo/2008/12/18/cartoonsnewsweeks-best-of-2008.html. Access on: May 03, 2011. 

    The sentence “Consider him gone.”, at the bottom of the second picture:
    Escolha uma alternativa para a questão 9aa55cd9-b6
  • AA31722D-B5

    Inglês

    Interpretação de texto | Reading comprehension
    IF-TM · 2011Muito difícilEntre para guardar nos favoritos
    RADIATION AND ATOMIC WASTE

       Life on earth has always been exposed to a certain amount of radiation from natural sources, which comes in part from cosmic rays. Also present in our environment is radiation from the radioactive elements that occur naturally such as radium, thorium, and uranium.
       One of the most serious problems that can result from radiation given off by nuclear reactions is damage to the genes, the cells in living organisms that control hereditary factors. Exposure to radiation can cause a mutation, a change in some inherited characteristics of the organisms. Only a very small proportion of mutations are beneficial to the organism.
       The nuclear reactors that have been developed for experimental, peaceful and energy production purposes are surrounded by a heavy protective shield of concrete, or sometimes of lead, to protect the people who work with them.
      A further problem involves the disposal of radioactive wastes. As the number of nuclear reactors in existence has increased, so has the amount of dangerous waste products. They cannot simply be released into the environment because they could create a potential hazard for all living things in the world. Experimentation is trying constantly to find safe methods of getting rid of the harmful by-products of nuclear reactors. (p. 75)

    Adaptado de LIBERATO, Wilson Antônio. De olho no vestibular (Inglês -Textos). São Paulo: FTD, 1996. 144 p. 
    Select the correct statement analyzing the information given by the text above.
    Escolha uma alternativa para a questão aa31722d-b5