Questões de Concurso Comentadas sobre presente perfeito | present perfect em inglês

Foram encontradas 150 questões

Q1676666 Inglês
INSTRUÇÃO: Leia o texto abaixo para responder a questão.

Close relatives of the coronavirus may have been in bats for decades

    Viruses from the coronavirus lineage responsible for Covid-19 have been circulating in bats for decades, long before the virus started infecting people last year, a new study suggests.
    How exactly the virus jumped to humans is still a mystery. But the study suggests the coronavirus most likely evolved in bats — such as intermediate horseshoe bats, the source of the coronavirus that caused the 2003–2004 SARS outbreak — not snakes or pangolins as some researchers have suggested. Pangolins or another animal might still have been an intermediate host before the virus made it to humans.
    Based on the evolutionary relationship among the 68 coronaviruses, the researchers estimate that the coronavirus lineage that gave rise to the virus behind the pandemic has been present in bats for decades.
    That long period hints that more bat viruses with the potential to infect humans are circulating in horseshoe bats. Searching for such bat viruses can help identify potential threats before the pathogens make the jump, the team writes.

Adaptado de https://www.sciencenews.org/article/covid-19-coronavirus-evolution-close-relatives-bats?
No texto, a frase “have been circulating in bats for decades”, escrita na forma negativa, é:
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Q1676489 Inglês
Which alternative is wrong as the use of the Present Perfect:
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Q1676474 Inglês

Read the text below to answer the question:


ICEBERG A68a


   An enormous iceberg that is heading toward the island of South Georgia in the southern Atlantic Ocean has broken up into three large chunks. Scientists from NASA have been tracking the berg - dubbed A68a - for several weeks. It actually calved from the Larsen C ice shelf in 2017 and has been floating northwards ever since. In recent weeks, a fast-moving stream of water known as the Southern Antarctic Circumpolar Current Front has put the chunks on a trajectory that means they could run aground off the coast of South Georgia. Scientists say the three fragments are roughly 2,600 square kilometres in size. The submerged part of one chunk is 106 metres at its thickest point.


   The sheer bulk of the three iceberg chunks poses a serious threat to the wildlife of South Georgia. There could be an environmental catastrophe waiting to happen. If the three mini icebergs collide with the seabed, they could obstruct penguins and seals from foraging for fish. They could also block the route between penguin colonies and their feeding grounds during the breeding season. Scientists worry the underside of the fragments could grind the seabed near South Georgia and disrupt delicate underwater ecosystems. This could be exacerbated by the introduction of a mass of fresh water to the ecosystems as the stationary fragments melt over the summer months. 


Available at: https://breakingnewsenglish.com/2012/201229-iceberg-a68a.html Accessed on January 5th 2021.

In the first paragraph there is NO occurrence of:
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Q1757151 Inglês

Complete the sentences with the correct form of the verb in parenthesis:


1.She ____ the text frequently.(to forget)

2.I_______a new bicycle two months ago. (to buy)


Respectively the order is:

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Q1757144 Inglês

CRIMINALS HAVE SMALLER BRAIN SIZE, SAYS STUDY


        A new study has found that antisocial people are more likely to have smaller areas of their brain. Researchers said criminals' brains had a different structure to the brains of people who followed the law. The study is published in the journal "Lancet Psychiatry". Researchers used data from 672 people born in 1972-73. They looked at records of the people's antisocial behaviour between the ages of seven and 26. At the age of 45, the researchers scanned the people's brains. Eighty of the people had a history of criminal and antisocial behaviour from being early teenagers. Researchers found that the areas of the brain linked to emotions, motivation and behaviour control were smaller in the long-term criminals' brains. 

        Professor Terrie Moffitt, a co-author of the research, said the research could help doctors understand what is behind long-term antisocial behaviour. She said the antisocial people in the study may have behaved badly because of their brain structure. She said: "They are actually operating under some [disability] at the level of the brain." She added that because of this, we needed to care for these people in a kinder way. Lead author Dr Christina Carlisi said: "Differences in brain structure might make it difficult for people to develop social skills. This may prevent them from engaging in antisocial behaviour. These people could benefit from more support throughout their lives." 


Available on: https://breakingnewsenglish.com/2002/200221-brain-size.html Accessed on: March, 20th 2020.


“A new study has found that antisocial people...” In this excerpt we have an example of: 
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Q1735548 Inglês
Answers the question according to the text below.

TEXT VI

Why are animals important to human beings?

There are a number of reasons why animals are important to human beings. The main reason is that animals benefit us personally, socially and economically.

Since the time of our cavemen ancestors, there have been interactions between humans and animals. Animals can be our friends, companions, protectors, benefactors and comforters. Research studies indicate that people who own pets and have close bond with them have higher self-esteem. They are also generally happier and healthier. There are many reported cases in which pets protected their owners and family members. In the United States, a pet dog alerted its owners that their babysitter was abusive. A couple who hired a babysitter to take care of their baby noticed that their pet dog was aggressive to the babysitter. Upon investigation, they discovered that their child was abused by the babysitter.

Animals provide many other benefits to humans. Insulin, a hormone in our body which controls the amount of sugar absorbed by our blood, could not be artificially produced previously. It had to be derived from cows and pigs. Nowadays, even though animal insulin has largely been replaced by artificial human insulin, the former is still available on prescription. Trained guide dogs are available to serve as loyal companions and ‘pairs of eyes’ for the blind. In the past, hunters took along hunting dogs to track, sniff out and catch wild game. When night fell, the canines were the hunters’ companions and protectors. In rehabilitation centers, animals are used to help the sick recover. For instance, petting a pony helps to lift a sick child’s spirit.

Throughout history, animals have helped humans. We use animals to work for us. In the agricultural sector, oxen pull ploughs before seeds are planted in the soil. We use horses for transportation purposes. They pull carriages and covered wagons for us. Even though oxen and horses are rarely used for farming and travelling purposes respectively today, the horses are still being used for riding and racing. They are also used to participate in contests in order to win awards. Farmers depend on animals such as cattle, poultry, sheep, goats, among others, for their horses are rarely used for farming and travelling purposes respectively today, the horses are still being used for riding and racing. They sell the animals’ meat, milk and eggs to earn money. In the fishing industry, although the use of modern equipment and technology have replaced the use of animals to catch fish, fishermen in some parts of the world still use animals like dolphins, otters and cormorants for the purpose.

Another indirectly way in which animals help us is that they assist in the reproduction of a variety of fruit and vegetable crops, which are an important part of our healthy diet. Without animals to help disperse seeds and pollinate plants, many of them would have become extinct.

In conclusion, animals are important to human beings because they benefit us socially, personally as well as economically. Since they are of great benefit to us, we should treat them well.

https://english312.com/why-are-animals-important-to-human-beings.html 
“Nowadays, even though animal insulin has largely been replaced by artificial human insulin, the former is still available on prescription.” (lines 13-14-15). The highlighted sentence is in the:
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Q1735546 Inglês
Answers the question according to the text below.

TEXT VI

Why are animals important to human beings?

There are a number of reasons why animals are important to human beings. The main reason is that animals benefit us personally, socially and economically.

Since the time of our cavemen ancestors, there have been interactions between humans and animals. Animals can be our friends, companions, protectors, benefactors and comforters. Research studies indicate that people who own pets and have close bond with them have higher self-esteem. They are also generally happier and healthier. There are many reported cases in which pets protected their owners and family members. In the United States, a pet dog alerted its owners that their babysitter was abusive. A couple who hired a babysitter to take care of their baby noticed that their pet dog was aggressive to the babysitter. Upon investigation, they discovered that their child was abused by the babysitter.

Animals provide many other benefits to humans. Insulin, a hormone in our body which controls the amount of sugar absorbed by our blood, could not be artificially produced previously. It had to be derived from cows and pigs. Nowadays, even though animal insulin has largely been replaced by artificial human insulin, the former is still available on prescription. Trained guide dogs are available to serve as loyal companions and ‘pairs of eyes’ for the blind. In the past, hunters took along hunting dogs to track, sniff out and catch wild game. When night fell, the canines were the hunters’ companions and protectors. In rehabilitation centers, animals are used to help the sick recover. For instance, petting a pony helps to lift a sick child’s spirit.

Throughout history, animals have helped humans. We use animals to work for us. In the agricultural sector, oxen pull ploughs before seeds are planted in the soil. We use horses for transportation purposes. They pull carriages and covered wagons for us. Even though oxen and horses are rarely used for farming and travelling purposes respectively today, the horses are still being used for riding and racing. They are also used to participate in contests in order to win awards. Farmers depend on animals such as cattle, poultry, sheep, goats, among others, for their horses are rarely used for farming and travelling purposes respectively today, the horses are still being used for riding and racing. They sell the animals’ meat, milk and eggs to earn money. In the fishing industry, although the use of modern equipment and technology have replaced the use of animals to catch fish, fishermen in some parts of the world still use animals like dolphins, otters and cormorants for the purpose.

Another indirectly way in which animals help us is that they assist in the reproduction of a variety of fruit and vegetable crops, which are an important part of our healthy diet. Without animals to help disperse seeds and pollinate plants, many of them would have become extinct.

In conclusion, animals are important to human beings because they benefit us socially, personally as well as economically. Since they are of great benefit to us, we should treat them well.

https://english312.com/why-are-animals-important-to-human-beings.html 
In the sentence: “Throughout history, animals HAVE HELPED humans.” (line 20), the highlighted expression is in the:
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Q1694818 Inglês
The document was drafted for the latest round of talks on the Convention of Biological Diversity, which had been due to take place this autumn in China but was postponed because of the coronavirus pandemic. It has been rescheduled for next year. (lines 17, 18, 19)
The extract has four (4) underlined elements, analyze them carefully and choose the alternative that best describe them:
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Q1694244 Inglês

Newly discovered primate 'already facing extinction'


   The Popa langur, named after its home on Mount Popa, is critically endangered with numbers down to about 200 individuals.
   Langurs are a group of leaf-eating monkeys that are found across south east Asia.
   The newly described animal is known for its distinctive spectacle-like eye patches and greyish-coloured fur. It is at risk from habitat loss and hunting.
   Scientists have long suspected there might be a new species in Myanmar, based on DNA extracted from the droppings of wild monkeys, but evidence has been hard to find. 

(Adaptado de https://www.bbc.com/news/science-environment-54894681)

O negativo da frase “Scientists have long suspected” é:
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Q1620942 Inglês
Complete the sentence below with the correct verb. Choose the CORRECT answer.
“He told me about his favorite, but I _________ its name.”
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Q1151111 Inglês

                                           Dr. Dweck’s research into growth mindset

                                                         changed education forever


Over 30 years ago, Carol Dweck and her colleagues became interested in students' attitudes about failure. They noticed that some students rebounded while other students seemed devastated by even the smallest setbacks. After studying the behavior of thousands of children, Dr. Dweck coined the terms fixed mindset and growth mindset to describe the underlying beliefs people have about learning and intelligence. When students believe they can get smarter, they understand that effort makes them stronger. Therefore they put in extra time and effort, and that leads to higher achievement.

Recent advances in neuroscience have shown us that the brain is far more malleable than we ever knew. Research on brain plasticity has shown how connectivity between neurons can change with experience. With practice, neural networks grow new connections, strengthen existing ones, and build insulation that speeds transmission of impulses. These neuroscientific discoveries have shown us that we can increase our neural growth by the actions we take, such as using good strategies, asking questions, practicing, and following good nutrition and sleep habits. […]

So the researchers asked, “Can we change mindsets? And if so, how?” This began a series of interventions and studies that prove we can indeed change a person’s mindset from fixed to growth, and when we do, it leads to increased motivation and achievement. For example, 7th graders who were taught that intelligence is malleable and shown how the brain grows with effort showed a clear increase in math grades.

In addition to teaching kids about malleable intelligence, researchers started noticing that teacher practice has a big impact on student mindset, and the feedback that teachers give their students can either encourage a child to choose a challenge and increase achievement or look for an easy way out. For example, studies on different kinds of praise have shown that telling children they are smart encourages a fixed mindset, whereas praising hard work and effort cultivates a growth mindset. When students have a growth mindset, they take on challenges and learn from them, therefore increasing their abilities and achievement. […].


Source: https://www.mindsetworks.com/science/.Access:02/12/2019)

Observe the following sentences taken from the text:


I. Recent advances in neuroscience have shown us that the brain is far more malleable than we ever knew.

II. Research on brain plasticity has shown how connectivity between neurons can change with experience.


Mark what is CORRECT about verb tenses in the above sentences:

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Q1142885 Inglês

Australia fires: What's being done to fight the flames?

Large parts of Australia __________ (devastate) by the worst wildfires the country __________ (see) in decades, with huge blazes tearing through bush, woodland and national parks. Record-breaking temperatures and months of drought __________ (help) the fires burn an estimated 10 million hectares (100,000 sq km) of land since 1 July.

Bushfire conditions EASED over the weekend, giving fire crews a period of temporary respite. But authorities __________ (say) the huge fires will persist until there is substantial rainfall. More hot weather is __________ (expect) next week and the risk was far from over, they said. Thousands of firefighters are still battling blazes across large swathes of Australia - ranging in size from small fires to infernos burning across hectares of land. Entire towns have been engulfed and residents across several states have lost their homes. At least 28 people have died.

State and federal authorities have been working together to try to stem the spread. While they have managed to contain some within a matter of days, the biggest blazes have been burning for months.

At least 3,700 firefighters are on the ground at any one time across the country during the worst periods, according to the country's state fire services. Most are in the worst-hit states of New South Wales (NSW) and Victoria. When fires have been at their worst, about 2,700 firefighters have been battling the blazes at any one time in NSW alone. Ben Shepherd, of the NSW Rural Fire Service, said his colleagues had dealt with 4.2m hectares of burning land this season, compared with the typical 300,000 hectares. "It's been an incredibly long campaign," he said.

Fire crews across the country have been joined by 3,000 army, navy and air force reservists who are assisting with search and rescue and clean-up efforts. Further support coming from the US, Canada, and New Zealand, who have sent additional teams and equipment to help.

                                         (https://www.bbc.com/news/world-australia-51008051 )

Fill the gaps with the correct form of the verbs in parenthesis:
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Q1819123 Inglês
Qual das alternativas abaixo preenche corretamente a lacuna da frase: “I have _____ there several times”?
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Q1757991 Inglês
Language changes all the time. Even though grammar changes more slowly than vocabulary, it is not a set of unalterable rules. There are sometimes disagreements about what is correct English and what is incorrect. 'Incorrect' grammar is often used in informal speech. Does that make it acceptable? John Eastwood, author of Oxford Guide do English Grammar says: "Where there is a difference between common usage and opinions about correctness, I have pointed this out." This information is important for learners. In some situations, it may be safer for them to use the form which is traditionally seen as correct. The use of a correct form in an unsuitable context, however, can interfere with understanding just as much as a mistake. To help learners to use language which is appropriate for a given occasion, students must know that there are usages as formal, informal, literary and so on. Only one alternative has no grammatical error. Which is it?
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Q1743968 Inglês
Which is the correct sentence about present perfect tense:
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Q1738373 Inglês

Imagem associada para resolução da questão


This is a mind map about:

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Q1725576 Inglês
Read the news below.

While in Pakistan the good news is that the killing of journalists _________________ a merciful reduction, intimidation of the media continues to grow. Identify the best alternative that completes the context.
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Q1725017 Inglês

Considere the sentence below:


“Our classes begin at nine.”


The verb tense is:

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Q1724865 Inglês
Complete the sentence below with the correct verb. Choose the CORRECT answer.

My family and I _________ at the hotel since Friday.”
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Q1721807 Inglês

For the question, fill in the blanks with the correct alternative.


Nobody has ________ to my webpage yet.

Alternativas
Respostas
81: D
82: D
83: A
84: B
85: A
86: C
87: E
88: A
89: B
90: B
91: D
92: C
93: A
94: D
95: B
96: A
97: C
98: B
99: C
100: B