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Air travel in Brazil has undergone some big changes that are sensibly improving the quality of the services offered to passengers. The first effort was the successful expansion and modernization of our airports, guaranteeing that the demands generated by the World Cup could be attended with excellence.

This is why big investments were made, thanks to combined efforts from the public sector and the private concessionaires of the five biggest airports. Funds to the tune of R$11.4 billion allowed for an increase of 70 million passengers per year in attendance capacity and made the airports more spacious, comfortable and functional.

Tam nas Nuvens. Brasil, n. 81 p. 42.

Na frase “Air travel in Brazil has undergone some big changes”, a expressão sublinhada indica que a ação verbal

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Air travel in Brazil has undergone some big changes that are sensibly improving the quality of the services offered to passengers. The first effort was the successful expansion and modernization of our airports, guaranteeing that the demands generated by the World Cup could be attended with excellence.

This is why big investments were made, thanks to combined efforts from the public sector and the private concessionaires of the five biggest airports. Funds to the tune of R$11.4 billion allowed for an increase of 70 million passengers per year in attendance capacity and made the airports more spacious, comfortable and functional.

Tam nas Nuvens. Brasil, n. 81 p. 42.

De acordo com as informações contidas no texto,

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Shopping on the Internet will have a disastrous effect on American cities and states, warn researchers from the University of California, Berkeley. They will lose billions of dollars in sales taxes because people are buying goods from outoftown, outof state, or even from abroad.

American cities and states rely heavily on local sales taxes. Sales by telephone and mail already cost states around $ 3 billion in lost taxes each year. But the Internet could bring about a new hemorrhage of revenues, warns Nathan Newman ofthe University's Center for Economic Research. “At the push of a button, consumers will have access to the lowest-priced goods nationwide and, with the added bonus of avoiding sales taxes, interstate sales may explode over the Internet, leaving state and local government finances in tatters”, he says.

New Scientist, 26 August 1995.

According to the text, 10 years ago, researches predicted that in the future

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One of the most important features of our closed material system is its degree of organization. Whereas the biosphere is an open system in terms of energy, constantly receiving solar rays, no new physical identity has been created since the birth of the planet. Thus, the recycling of everything is an absolute necessity to the nature of all ecological processes. The waste products of one process must become the materials of the next. Some of the more highly organized materials, such as fossil fuels, have taken millions of years to develop. These are nonrenewable resources — that is, once used, they cannot be replaced, at least in this geological age. In order to avoid entropy, materials cannot be used up faster than they are produced. In its simplest terms, then, pollution can be seen as our creation of more wastes than ecosystem can handle. We have interfered with nature's system of recycling and purification. The excess wastes we have produced are not being recycled and purified.

JENKINS-MURPHY, Andrews. How to prepare for the TOEFL. USA: HBJ, 1987.

According to the passage, our biosphere

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One of the most important features of our closed material system is its degree of organization. Whereas the biosphere is an open system in terms of energy, constantly receiving solar rays, no new physical identity has been created since the birth of the planet. Thus, the recycling of everything is an absolute necessity to the nature of all ecological processes. The waste products of one process must become the materials of the next. Some of the more highly organized materials, such as fossil fuels, have taken millions of years to develop. These are nonrenewable resources — that is, once used, they cannot be replaced, at least in this geological age. In order to avoid entropy, materials cannot be used up faster than they are produced. In its simplest terms, then, pollution can be seen as our creation of more wastes than ecosystem can handle. We have interfered with nature's system of recycling and purification. The excess wastes we have produced are not being recycled and purified.

JENKINS-MURPHY, Andrews. How to prepare for the TOEFL. USA: HBJ, 1987.

According to the passage,