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2018下半年英语六级考试阅读模拟试题三篇

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2018下半年英语六级考试阅读模拟试题:可再生能源

  Renewable Energy

  In the past century,it has been seen that the consumption of non-renewable sources of energy has caused more environmental damage than any other human activity. Electricity generated from fossil fuels such as coal and crude oil has led to high concentrations of harmful gases in the atmosphere.This has in turn led to many problems being faced today such as ozone depletion and global warming. Vehicular pollution has also been a major problem.

  Therefore,alternative sources of energy have become very important and relevant to today's world.These sources,such as the sun and wind,can never be exhausted and therefore arc called renewable.They cause less emission and are available locally.Their use can. to a large extent,reduce chemical,radioactive, and thermalpollution. They stand out as a viable source of clean and limitless energy.These are also known as non-conventional sources of energy.Most of the renewable sources of energy are fairfy non-polluting and considered clean though biomass,a renewable source,is a major polluter indoors.

  Solar Energy

  Solar energy is the most readily available source of energy.It does not belong to anybody and is,therefore,free.It is also the most important of the non-conventional sources of energy because it is non-polluting and,therefore.helps in l...

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2018下半年英语六级考试阅读模拟试题3篇

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Passage 1

  An industrial society,especially one as centralized and concentrated as that of Britain,is heavily dependant on certain essential services:for instance,electricity supply,water,rail and road transport,the harbors.The area of dependency has widened to include removing rubbish,hospital and ambulance services,and,as the economy develops,central computer and information services as well.If any of these services ceases to operate,the whole economic system is in danger.

  It is this interdependency of the economic system that makes the power of trade unions such an important issue.Single trade unions have the ability to cut off many economic blood supplies.This can happen more easily in Britain than in some other countries,in part because the labor force is highly organized.About 55 per cent of British workers belong to unions,compared to under a quarter in the United States.For historical reasons,Britain's unions have tended to develop along trade and occupational lines,rather than on an industry-by-industry basis,which makes wage policy,democracy in industry and the improvement of procedures for fixing wage levels difficult to achieve.

  There are considerable strains and tensions in the trade union movement,some of them arising from their outdated and inefficient structure.Some unions have lost many member...

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2018年12月英语六级考试阅读模拟试题3篇

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2018年12月英语六级考试阅读模拟试题(1)

  Federal Reserve System, central banking system of the United States, popularly called the Fed. A central bank serves as the banker to both the banking community and the government; it also issues the national currency, conducts monetary policy, and plays a major role in the supervision and regulation of banks and bank holding companies. In the U.S. these function are the responsibilities of key officials of the Federal Reserve System: the Board of Governors, located in Washington, D.C., and the top officers of 12 district Federal Reserve banks, located throughout the nation. The Fed’s actions, described below, generally have a significant effect on U.S. interest rates and, subsequently, on stock, bond, and other financial markets.

  The Federal Reserve’s basic powers are concentrated in the Board of Governors, which is paramount in all policy issues concerning bank regulation and supervision and in most aspects of monetary control. The board enunciates the Fed’s policies on both monetary and banking matter. Because the board is not an operating agency, most of the day-to day implementation of policy decisions is left to the district Federal Reserve banks, stock in which is owned by the commercial banks that are members of the Federal Reserve System. Ownership in this instance, however, does not imply control; the Boa...

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2018下半年英语六级考试阅读模拟试题

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2018下半年英语六级考试阅读模拟试题(1)

  In the last two hundred years there have been great changes in the method of production of goods. This is now also true of the building industry; for mechanization has been introduced. System building can save both time and money. The principle of system building is that the building is made from a set of standard units. These are either made at the building-site or at a factory. Some designers, in fact, are standardizing the dimensions of rooms. They are made in multiples of a single fixed length, usually ten centimeters. This is called a modular (标准件的) system, and it means that manufactures can produce standardized fittings at a lower cost. The most important fact about system building is its speed. A ten-storey flat, for example, can be completed in four months.

  There are several new methods of system building. One is the panel method. In this case, the construction company sometimes erects a factory on the site. The walls and floors of the building, called panels, are cast in a horizontal or vertical position. Conduits for electrical wires and sleeves for pipes are cast in the panels when they are being made. The moulds for making these castings are situated all around the building.

  After the concrete panels are cast, they are allowed to set and harden for a week. Next they are lifted by a tower cran...

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2018年12月英语六级考试阅读模拟试题

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2018年12月英语六级考试阅读模拟试题(1)

  The food irradiation process is a simple one. The new U.S. plant, Vindicator of Florida Incorporated in Mulberry, Fla., uses a material called cobalt 60 to irradiate food. Cobalt 60 is radioactive isotope (form) of the metallic element cobalt. Cobalt 60, which gives off radiation in the form of gamma rays, is also used for radiation therapy for cancer patients and for sterilizing hospital equipment. The radioactive isotope is created by bombarding cobalt with subatomic particles in a nuclear reactor. However, irradiation plants do not themselves contain nuclear reactors.

  In the irradiation plant, food is exposed to thin rods of cobalt 60. The rods give off gamma rays, which disrupt chemical processes in contaminating organisms. The disruption breaks down the cell walls of organisms or destroys their genetic material. The dose, set by the U.S. Food and Drug Administration (FDA), is enough to kill organisms on food, but not enough to produce significant changes in the food itself.

  Although irradiation slightly decreases the nutritive value of foods, the loss is less than that produced by some other methods of food preservation. Canning, for example, results in a much greater loss of nutrients.

  Those who object to irradiation say that the process may create substances not found in nonirradiated food. Since...

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