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Q2254399 Inglês

Reading Comprehension

Metal Detectors


Have you ever seen a man with a headset pointing a long pole at the ground on the beach?


If so you might have seen a person using a metal detector. People use these devices to find metal.


Metal detectors make magnetic waves. These waves go through the ground. The waves change when they hit metal then it beeps. This lets the person with the device know that metal is close.


The first metal detectors were meant to help miners. They were big and cost a lot of money. Although they use a lot of power, they didn’t work well. People kept trying to make them better.


Nowadays metal detectors are smaller, light and cheap. That’s why people bring them to the beach. People can look for rings in the water, as well as look for phones in the sand. But they usually find junk though. Metal detectors also protect people. They help to keep guns out of some places:


Airports, courthouses and, schools. They also help guards look for weapons. Guards use special wands to find metal on a person.


These devices save lives in other ways too. During wars, people plant bombs in the ground. When the war ends, they don’t clean up their messes. This is unsafe for the people who live in those places. Others use metal detectors to find bombs. They remove them and help the people. These devices also make clothes safer. It sounds funny, but it’s true. Most clothes are made in big factories.


There are lots of needles in these places. Needles break from time to time. They get stuck in the clothes. They would poke people trying them on. They don’t though. That’s because our clothes are scanned for metal. Isn’t that nice?


Metal detectors make the world a safer place.

According to the text, why do people bring metal detectors to the beach?
Alternativas
Q2254398 Inglês

Reading Comprehension

Metal Detectors


Have you ever seen a man with a headset pointing a long pole at the ground on the beach?


If so you might have seen a person using a metal detector. People use these devices to find metal.


Metal detectors make magnetic waves. These waves go through the ground. The waves change when they hit metal then it beeps. This lets the person with the device know that metal is close.


The first metal detectors were meant to help miners. They were big and cost a lot of money. Although they use a lot of power, they didn’t work well. People kept trying to make them better.


Nowadays metal detectors are smaller, light and cheap. That’s why people bring them to the beach. People can look for rings in the water, as well as look for phones in the sand. But they usually find junk though. Metal detectors also protect people. They help to keep guns out of some places:


Airports, courthouses and, schools. They also help guards look for weapons. Guards use special wands to find metal on a person.


These devices save lives in other ways too. During wars, people plant bombs in the ground. When the war ends, they don’t clean up their messes. This is unsafe for the people who live in those places. Others use metal detectors to find bombs. They remove them and help the people. These devices also make clothes safer. It sounds funny, but it’s true. Most clothes are made in big factories.


There are lots of needles in these places. Needles break from time to time. They get stuck in the clothes. They would poke people trying them on. They don’t though. That’s because our clothes are scanned for metal. Isn’t that nice?


Metal detectors make the world a safer place.

According to the text, we can infer that metal detectors: 
Alternativas
Q2254396 Inglês

Reading Comprehension

Metal Detectors


Have you ever seen a man with a headset pointing a long pole at the ground on the beach?


If so you might have seen a person using a metal detector. People use these devices to find metal.


Metal detectors make magnetic waves. These waves go through the ground. The waves change when they hit metal then it beeps. This lets the person with the device know that metal is close.


The first metal detectors were meant to help miners. They were big and cost a lot of money. Although they use a lot of power, they didn’t work well. People kept trying to make them better.


Nowadays metal detectors are smaller, light and cheap. That’s why people bring them to the beach. People can look for rings in the water, as well as look for phones in the sand. But they usually find junk though. Metal detectors also protect people. They help to keep guns out of some places:


Airports, courthouses and, schools. They also help guards look for weapons. Guards use special wands to find metal on a person.


These devices save lives in other ways too. During wars, people plant bombs in the ground. When the war ends, they don’t clean up their messes. This is unsafe for the people who live in those places. Others use metal detectors to find bombs. They remove them and help the people. These devices also make clothes safer. It sounds funny, but it’s true. Most clothes are made in big factories.


There are lots of needles in these places. Needles break from time to time. They get stuck in the clothes. They would poke people trying them on. They don’t though. That’s because our clothes are scanned for metal. Isn’t that nice?


Metal detectors make the world a safer place.

Identify the following statements as true ( T ) or false ( F ) about metal detectors according to the text.

( ) They used to be too big. ( ) They were too expensive. ( ) They didn’t work well. ( ) They were unsafe. ( ) They make magnetic waves.

Choose the alternative which presents the correct sequence:
Alternativas
Q2254326 Inglês
The Internet at Risk

    Some 12,000 people convened last week in Tunisia for a United Nations conference about the Internet. Many delegates want an end to the U.S. Commerce Department's control over the assignment of Web site addresses (for example, http://www.washington-%20post.com/ ) and e-mail accounts (for example, [email protected]). The delegates' argument is that unilateral U.S. control over these domain names reflects no more than the historical accident of the Internet's origins. Why should the United States continue to control the registration of French and Chinese Internet addresses? It doesn't control the registration of French and Chinese cars, whatever Henry Ford's historic role in democratizing travel was.
    The reformers' argument is attractive in theory and dangerous in practice. In an ideal world, unilateralism should be avoided. But in an imperfect world, unilateral solutions that run efficiently can be better than multilateral ones that  ....51....
        The job of assigning domain names offers huge opportunities for abuse. ....52.... controls this function can decide to keep certain types of individuals or organizations offline (dissidents or opposition political groups, for example). Or it can allow them on in exchange for large fees. The striking feature of U.S. oversight of the Internet is that such abuses have not occurred.
        It's possible that a multilateral overseer of the Internet might be just as efficient. But the ponderous International Telecommunication Union, the U.N. body that would be a leading candidate to take over the domain registry, has a record of resisting innovation - including the advent of the Internet. Moreover, a multilateral domain-registering body would be caught between the different visions of its members: on the one side, autocratic regimes such as Saudi Arabia and China that want to restrict access to the Internet; on the other side, open societies that want low barriers to entry. These clashes of vision would probably make multilateral regulation inefficiently political. You may say that this is a fair price to pay to uphold the principle of sovereignty. If a country wants to keep certain users from registering domain names (Nazi groups, child pornographers, criminals), then perhaps it has a right to do so. But the clinching argument is that countries can exercise that sovereignty to a reasonable degree without controlling domain names. They can order Internet users in their territory to take offensive material down. They can order their banks or credit card companies to refuse to process payments to unsavory Web sites based abroad. Indeed, governments' ample ability to regulate the Internet has already been demonstrated by some of the countries pushing for reform, such as authoritarian China. The sovereign nations of the world have no need to wrest control of the Internet from the United States, because they already have it.

(Adapted from Washington Post, November 21, 2005; A14)
Segundo o texto, Henry Ford 
Alternativas
Q2254271 Inglês
The Internet at Risk

    Some 12,000 people convened last week in Tunisia for a United Nations conference about the Internet. Many delegates want an end to the U.S. Commerce Department's control over the assignment of Web site addresses (for example, http://www.washington-%20post.com/ ) and e-mail accounts (for example, [email protected]). The delegates' argument is that unilateral U.S. control over these domain names reflects no more than the historical accident of the Internet's origins. Why should the United States continue to control the registration of French and Chinese Internet addresses? It doesn't control the registration of French and Chinese cars, whatever Henry Ford's historic role in democratizing travel was.
    The reformers' argument is attractive in theory and dangerous in practice. In an ideal world, unilateralism should be avoided. But in an imperfect world, unilateral solutions that run efficiently can be better than multilateral ones that  ....51....
        The job of assigning domain names offers huge opportunities for abuse. ....52.... controls this function can decide to keep certain types of individuals or organizations offline (dissidents or opposition political groups, for example). Or it can allow them on in exchange for large fees. The striking feature of U.S. oversight of the Internet is that such abuses have not occurred.
        It's possible that a multilateral overseer of the Internet might be just as efficient. But the ponderous International Telecommunication Union, the U.N. body that would be a leading candidate to take over the domain registry, has a record of resisting innovation - including the advent of the Internet. Moreover, a multilateral domain-registering body would be caught between the different visions of its members: on the one side, autocratic regimes such as Saudi Arabia and China that want to restrict access to the Internet; on the other side, open societies that want low barriers to entry. These clashes of vision would probably make multilateral regulation inefficiently political. You may say that this is a fair price to pay to uphold the principle of sovereignty. If a country wants to keep certain users from registering domain names (Nazi groups, child pornographers, criminals), then perhaps it has a right to do so. But the clinching argument is that countries can exercise that sovereignty to a reasonable degree without controlling domain names. They can order Internet users in their territory to take offensive material down. They can order their banks or credit card companies to refuse to process payments to unsavory Web sites based abroad. Indeed, governments' ample ability to regulate the Internet has already been demonstrated by some of the countries pushing for reform, such as authoritarian China. The sovereign nations of the world have no need to wrest control of the Internet from the United States, because they already have it.

(Adapted from Washington Post, November 21, 2005; A14)
No geral, o texto
Alternativas
Respostas
411: C
412: D
413: A
414: B
415: E