Questões de Inglês

Most people believe they know what actually causes AIDS. For a decade, scientists, government officials, journalists, TV shows, and others have told them that AIDS is caused by a retrovirus called HIV. This virus supposedly infects and kills the “T-cells” of the immune system, leading to a fatal immune deficiency after an asymptomatic period that averages 10 years. Most people do not know - because there has been a visual media blackout on the subject - about a scientific controversy over the cause of AIDS. Leading biochemical scientists have been warning for years that there is no proof that HIV causes AIDS. The warnings were met first with silence, then with ridicule and contempt. For example, some scientists compared the doubters to people who think that bad air causes malaria.

 

(What Causes Aids?, Charles A. Thomas et al. Adaptado)

O texto afirma que famosos bioquímicos

Most people believe they know what actually causes AIDS. For a decade, scientists, government officials, journalists, TV shows, and others have told them that AIDS is caused by a retrovirus called HIV. This virus supposedly infects and kills the “T-cells” of the immune system, leading to a fatal immune deficiency after an asymptomatic period that averages 10 years. Most people do not know - because there has been a visual media blackout on the subject - about a scientific controversy over the cause of AIDS. Leading biochemical scientists have been warning for years that there is no proof that HIV causes AIDS. The warnings were met first with silence, then with ridicule and contempt. For example, some scientists compared the doubters to people who think that bad air causes malaria.

 

(What Causes Aids?, Charles A. Thomas et al. Adaptado)

De acordo com o texto, o retrovírus HIV

The greenhouse effect is unquestionably real and helps to regulate the temperature of our planet. It is essential for life on Earth and is one of Earth’s natural processes. It is the result of heat absorption by certain gases in the atmosphere (called greenhouse gases because they effectively ‘trap’ heat in the lower atmosphere) and re-radiation downward of some of that heat. Water vapor is the most abundant greenhouse gas, followed by carbon dioxide and other gases. Without a natural greenhouse effect, the temperature of the Earth would be about zero degrees F (–18 °C) instead of its present 57 °F (14 °C). So, the concern is not with the fact that we have a greenhouse effect, but whether human activities are leading to an enhancement of the greenhouse effect by the emission of greenhouse gases through fossil fuel combustion and deforestation

 

(www.physicalgeography.net)

Na terceira linha do texto, a palavra It refere-se a

The greenhouse effect is unquestionably real and helps to regulate the temperature of our planet. It is essential for life on Earth and is one of Earth’s natural processes. It is the result of heat absorption by certain gases in the atmosphere (called greenhouse gases because they effectively ‘trap’ heat in the lower atmosphere) and re-radiation downward of some of that heat. Water vapor is the most abundant greenhouse gas, followed by carbon dioxide and other gases. Without a natural greenhouse effect, the temperature of the Earth would be about zero degrees F (–18 °C) instead of its present 57 °F (14 °C). So, the concern is not with the fact that we have a greenhouse effect, but whether human activities are leading to an enhancement of the greenhouse effect by the emission of greenhouse gases through fossil fuel combustion and deforestation

 

(www.physicalgeography.net)

O texto afirma que

The greenhouse effect is unquestionably real and helps to regulate the temperature of our planet. It is essential for life on Earth and is one of Earth’s natural processes. It is the result of heat absorption by certain gases in the atmosphere (called greenhouse gases because they effectively ‘trap’ heat in the lower atmosphere) and re-radiation downward of some of that heat. Water vapor is the most abundant greenhouse gas, followed by carbon dioxide and other gases. Without a natural greenhouse effect, the temperature of the Earth would be about zero degrees F (–18 °C) instead of its present 57 °F (14 °C). So, the concern is not with the fact that we have a greenhouse effect, but whether human activities are leading to an enhancement of the greenhouse effect by the emission of greenhouse gases through fossil fuel combustion and deforestation

 

(www.physicalgeography.net)

De acordo com o texto,

The definition of anorexia nervosa outlines the criteria used by professionals to diagnose the disorder. This definition separates anorexia and other eating disorders, (…) helps to define treatment strategies. Therefore, knowing the definition of anorexia is a first step (…) it.

 

(Eating Disorders, Seven Gans. Adaptado)