Прочитайте текст. The British are without doubt the most thoroughly watched people in the world. Alt...: ответ на тест 92898 - Английский язык

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The British are without doubt the most thoroughly watched people in the world. Although there are video cameras on nearly every street corner, the public seem unaware of their existence. Video cameras record drives who do not stop for a red traffic light, collisions between vehicles, reckless driving and violations of the speed limit on motorways. One explanation as to why these cameras are not considered an invasion of privacy is that both men and women feel safer knowing cameras can provide a form of protection. Citizens know that help is always available because guards are constantly watching the cameras. Cameras have also contributed to the combating of hooliganism at football matches and sports events, as the fans know they are under surveillance and their behaviour is much better than it used to be. Video cameras and security systems can keep the rise in the crime rate under control.

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Citizens know that help is always available because …

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Closed-circuit television
1. Closed-circuit television (CCTV) is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point, point to multipoint, or mesh wireless links. Though almost all video cameras fit this definition, the term is most often applied to those used for surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores. Videotelephony is seldom called «CCTV» but the use of video in distance education, where it is an important tool, is often so called.
2. In industrial plants, CCTV equipment may be used to observe parts of a process from a central control room, for example when the environment is not suitable for humans. CCTV systems may operate continuously or only as required to monitor a particular event. A more advanced form of CCTV, utilizing digital video recorders (DVRs), provides recording for possibly many years, with a variety of quality and performance options and extra features (such as motion-detection and email alerts).
3. More recently, decentralized IP-based CCTV cameras, some equipped with megapixel sensors, support recording directly to network-attached storage devices, or internal flash for completely stand-alone operation. Surveillance of the public using CCTV is particularly common in many areas around the world including the United Kingdom, where there are reportedly more cameras per person than in any other country in the world. There and elsewhere, its increasing use has triggered a debate about security versus privacy.
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What form of CCTV enables recording of video information in a number of ways?

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Plastic Materials
1. Plastic materials are not found in nature. Plastic is formed by extrusion or injection molding under very high pressure. It can be molded into any desired shape. Organic plastics are divided into two general groups: thermosetting and thermoplastic. The thermosetting group becomes rigid through a chemical change that occurs when heat is applied. These plastics cannot be remolded. The thermoplastic group remains soft at high temperatures and must be cooled before becoming rigid. This group is not used generally as a structural material.
2. Plastics are rapidly becoming important construction materials because of their great variety, strength, durability and lightness. Plastics are light. The benefits of light weight coupled with good strength and absence of corrosion offer tremendous potential as alternatives to traditional building materials. A given volume of polythene weights less than one-eighth of an equal volume of iron and less than half of the same volume of aluminum.
3. Plastics are used in the industry and in the household: from rockets and electronics to toys and house ware. Plastic products offer many advantages over the materials they replace, such as ease of handling, lower maintenance costs and rapidity of assembly. The insulation and dielectric properties of plastics led to their early use in the electrical engineering industry, which was followed by special application in mechanical engineering.
4. Using of plastics as materials for a construction in the form of sheets, rods or tubes is substituting the conventional metals. Plastics offer a lot of properties for the designs. Plastics have now been developed to such an extent that they can be applied to almost every branch of building, from the laying of foundations to the final coat of paint.
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Why do plastics replace traditional building materials?

Metal and timber are more difficult to ______ than plastics.

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One day, some Americans were having dinner at a hotel in London. When the fish was put on the table, a young man said: “Let’s examine the fish carefully. Perhaps we’ll find a diamond in it.” Everybody began to laugh, but an old man said: “Yes, I’m sure we have all heard such stories. Let me tell you what happened to me once.”
“When I was a young man,” he began, “I worked for a big company in New York; and I was sent to England to do some work there. I was in love with a beautiful girl, and before I left for England, we decided that we would be married when I returned home.
“I stayed in England for two months. I sent letters to the girl almost every day, but I didn’t receive any answers. And before I left for home, I bought a beautiful diamond ring for her. “On the ship one morning, a telegram was brought to me. It told me that the girl was going to be married to another man, I was so angry that I threw the diamond ring into the sea.
“My friend came to the port to meet me, and he invited me to dinner. When we were sitting down at the table and I was eating fish, I suddenly felt something hard in my mouth. What do you think it was?”
“The diamond!” all the Americans cried.
“No,” the old man answered. “It was a fish bone.”
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When a story-teller was a young man _____.