问答题Passage 3Tidal Power on the Cheap? A The startup, located on the Orkney Islands, way north of Scotland, has raised ￡6.2 million to build a working prototype of a floating tidal turbine that it says will be cheaper to install and maintain than others being tested now. The 8-meter-long prototype, ideally, will go into the water at the European Marine Energy Centre (EMEC) Tidal Test Site that sits just down the road from ScotRenewables in 2010. Commercial versions of the turbine will measure up to 40 meters long and weigh 250 tons, but generate 1.2 megawatts of power. B “That’s quite impressive when you compare it to others,” said CEO Barry Johnston. “We want to be competitive with offshore wind.” Rather than anchor a permanent turbine on the ocean floor, ScotRenewables will build a floating turbine that is slack moored with chains to an anchor on the sea floor. The body of the turbine-a long 40-meter tube of metal with a point at the end-will face directly into the tide. Below, two turbines attached to fins will convert the power of the tides into electricity. Johnston explained “A 1-meter prototype ScotRenewables is experimenting with in the wave tank is built. It looks like a model rocket with two fins with propellers attached to the ends of the fins.” C Tidal is the potentially most predictable, reliable form of renewable energy. With a tide table and computer, ScotRenewables can calculate the power output of a turbine decades in advance. You can’t do that with intermittent, variable sources like wind, solar or wave. Unfortunately, harnessing tidal power is quite difficult. Some of the prototypes that have been tested in the decades are quickly destroyed by rushing tides. Pulling those turbines up from the sea bed and taking them into the shop consumes time and money. Taking the ScotRenewables turbine in for repairs should be easy: maintenance workers would just have to take a boat out, unhook it, and put another in its place while the first is being entangled. D Tidal power is also 50 percent stronger at the surface than at the seabed so these turbines should be capable of generating more power. Other companies have tried to create surface tidal turbines before. The difficulty has been keeping the turbine pointed in the direction of the tide. Some get washed away. Other times, the creators build large superstructures around the turbine, which costs money. ScotRenewables says it will come up with control mechanisms and advanced hydrodynamics (i.e., aerodynamics in water) to keep the turbines pointed in the right direction. E Scotland is betting heavily on wind and wave power. The notoriously harsh waves and currents of the Pentland Firth, a channel which separates the main body of the U.K. with the Orkneys that is often referred to as the Saudi Arabia of Marine Energy by locals. By 2020, Scotland wants to get half of its power from renewable sources, including large hydroelectric dams. Hydroelectric constitutes about 11 percent of the country’s power now and 9 percent comes from wind and other renewables. A large portion of the new renewable sources of power will come from wind, tidal and wave. Marine energy could provide up to 35 terawatt hours of power to the U.K. by 2020 and 84 terawatt hours of power by 2050, according to Edwina Cook, business development officer at EMEC. The U.K. in 2004 consumed 340 terawatt hours of power. The EMEC has created tidal and wave testing centers for companies to build and validate prototypes. (The Pelamis-that sea snake looking wave power device-was tested at EMEC before commercial rollouts in Portugal.) The government has also passed exceptionally large credits for power providers that put tidal and wave power on the grid. (Prototypes participating in the EMEC test beds are actually connected to the grid and selling small amounts of power.) The hope is that the programme will create jobs, exports and green energy. Offshore, the Dublin based open Hydro Power is already testing a large tidal device that looks like a big rotating fan. F Talking about the prototype and commercial power production, however, is easier said than done. ScotRenewables did not like the software simulation tools it found when it first set out. Some software focused on tidal changes; others focused on waves. To build an effective surface tidal turbine, Johnston realized that both tidal and wave power should be taken into account. Thus, it had to build its own tools, which cost several thousands. It also built its own wave tank. It was easier than trying to book time at an EMEC wave tank. The company now hopes to lease time on the tank to other wave companies to generate revenue. And, because ships to deploy tidal and wave devices are in short supply, it is contemplating buying or building its own multi-purpose vessel. Which paragraph contains the following information? Write the correct letter, A-F, in boxes 1-4 on your answer sheet. 1. New plan has been made to involve a new factor besides tidal. 2. Damages have happened to the models in the past years. 3. A detailed structure of a model is demonstrated. 4. The immature model is expected to apply at the beginning of the twenty first century after further development.
问答题
Passage 3Tidal Power on the Cheap? A The startup, located on the Orkney Islands, way north of Scotland, has raised ￡6.2 million to build a working prototype of a floating tidal turbine that it says will be cheaper to install and maintain than others being tested now. The 8-meter-long prototype, ideally, will go into the water at the European Marine Energy Centre (EMEC) Tidal Test Site that sits just down the road from ScotRenewables in 2010. Commercial versions of the turbine will measure up to 40 meters long and weigh 250 tons, but generate 1.2 megawatts of power. B “That’s quite impressive when you compare it to others,” said CEO Barry Johnston. “We want to be competitive with offshore wind.” Rather than anchor a permanent turbine on the ocean floor, ScotRenewables will build a floating turbine that is slack moored with chains to an anchor on the sea floor. The body of the turbine-a long 40-meter tube of metal with a point at the end-will face directly into the tide. Below, two turbines attached to fins will convert the power of the tides into electricity. Johnston explained “A 1-meter prototype ScotRenewables is experimenting with in the wave tank is built. It looks like a model rocket with two fins with propellers attached to the ends of the fins.” C Tidal is the potentially most predictable, reliable form of renewable energy. With a tide table and computer, ScotRenewables can calculate the power output of a turbine decades in advance. You can’t do that with intermittent, variable sources like wind, solar or wave. Unfortunately, harnessing tidal power is quite difficult. Some of the prototypes that have been tested in the decades are quickly destroyed by rushing tides. Pulling those turbines up from the sea bed and taking them into the shop consumes time and money. Taking the ScotRenewables turbine in for repairs should be easy: maintenance workers would just have to take a boat out, unhook it, and put another in its place while the first is being entangled. D Tidal power is also 50 percent stronger at the surface than at the seabed so these turbines should be capable of generating more power. Other companies have tried to create surface tidal turbines before. The difficulty has been keeping the turbine pointed in the direction of the tide. Some get washed away. Other times, the creators build large superstructures around the turbine, which costs money. ScotRenewables says it will come up with control mechanisms and advanced hydrodynamics (i.e., aerodynamics in water) to keep the turbines pointed in the right direction. E Scotland is betting heavily on wind and wave power. The notoriously harsh waves and currents of the Pentland Firth, a channel which separates the main body of the U.K. with the Orkneys that is often referred to as the Saudi Arabia of Marine Energy by locals. By 2020, Scotland wants to get half of its power from renewable sources, including large hydroelectric dams. Hydroelectric constitutes about 11 percent of the country’s power now and 9 percent comes from wind and other renewables. A large portion of the new renewable sources of power will come from wind, tidal and wave. Marine energy could provide up to 35 terawatt hours of power to the U.K. by 2020 and 84 terawatt hours of power by 2050, according to Edwina Cook, business development officer at EMEC. The U.K. in 2004 consumed 340 terawatt hours of power. The EMEC has created tidal and wave testing centers for companies to build and validate prototypes. (The Pelamis-that sea snake looking wave power device-was tested at EMEC before commercial rollouts in Portugal.) The government has also passed exceptionally large credits for power providers that put tidal and wave power on the grid. (Prototypes participating in the EMEC test beds are actually connected to the grid and selling small amounts of power.) The hope is that the programme will create jobs, exports and green energy. Offshore, the Dublin based open Hydro Power is already testing a large tidal device that looks like a big rotating fan. F Talking about the prototype and commercial power production, however, is easier said than done. ScotRenewables did not like the software simulation tools it found when it first set out. Some software focused on tidal changes; others focused on waves. To build an effective surface tidal turbine, Johnston realized that both tidal and wave power should be taken into account. Thus, it had to build its own tools, which cost several thousands. It also built its own wave tank. It was easier than trying to book time at an EMEC wave tank. The company now hopes to lease time on the tank to other wave companies to generate revenue. And, because ships to deploy tidal and wave devices are in short supply, it is contemplating buying or building its own multi-purpose vessel. Which paragraph contains the following information? Write the correct letter, A-F, in boxes 1-4 on your answer sheet. 1. New plan has been made to involve a new factor besides tidal. 2. Damages have happened to the models in the past years. 3. A detailed structure of a model is demonstrated. 4. The immature model is expected to apply at the beginning of the twenty first century after further development.
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Some two thousand million years ago, the mountain on the sun was raised probably because______.A. the star moved away from the sunB. another star happened to come near the sunC. fhe sun and the moon raised the tides on the earthD. a large tidal wave of a star travelled over the surface of the sun
The Smokey Bear(护林熊) fire prevention program has resulted in a savings of $20 billion on all federal(联邦的), state and private forested land(私有林地). In 1941, 208,000 forest fires burned 30 million acres, while in 1981, fewer than 165,000 fires burned about three million acres. While forest usage has increased, the proportion(比例) of human-caused fires has remained stable; people still cause nine out of ten forest fires. But the biggest cause of fires is arson(纵火), accounting for(引起) 34 percent of forest fires in 1981.1. According to the passage, use of forested land has ____.A、stabilizedB、been privatizedC、decreasedD、risen2. According to the passage, in 1941 forest fires burned ____.A、less acres than in 1981B、3 million acresC、ten times as many acres as in 1981D、20 million acres more than in 19813. According to the passage, the number of human-caused fires ____.A、has remained the same proportionatelyB、has increasedC、is the same as the arson casesD、accounts for 34 per cent of forest fires4. According to the passage, which of the following statements is true?A、Nine out of ten fires are caused by arsonists.B、The Smokey Bear program has saved the nation a lot of money.C、There are more forest fires now than before.D、People do not use the forests as much as they did in the past.5. It may be inferred from the passage that ____.A、the majority of fires are caused by humansB、arson is increasing every yearC、more acres are destroyed by fire each yearD、fewer people are using the forests
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单选题In his study on the failures of the American educational system, Professor Harris states that over two million high school seniors in this country are functionally illiterate, and at least as much as four million others cannot read at an eighth-grade level.Aat least as much as four million others cannotBat least as many as four million and more cannotCmore than four million of other students are unable toDthere was at least four million other students unable toEmore than four million others cannot
问答题Passage 3Tidal Power on the Cheap? A The startup, located on the Orkney Islands, way north of Scotland, has raised ￡6.2 million to build a working prototype of a floating tidal turbine that it says will be cheaper to install and maintain than others being tested now. The 8-meter-long prototype, ideally, will go into the water at the European Marine Energy Centre (EMEC) Tidal Test Site that sits just down the road from ScotRenewables in 2010. Commercial versions of the turbine will measure up to 40 meters long and weigh 250 tons, but generate 1.2 megawatts of power. B “That’s quite impressive when you compare it to others,” said CEO Barry Johnston. “We want to be competitive with offshore wind.” Rather than anchor a permanent turbine on the ocean floor, ScotRenewables will build a floating turbine that is slack moored with chains to an anchor on the sea floor. The body of the turbine-a long 40-meter tube of metal with a point at the end-will face directly into the tide. Below, two turbines attached to fins will convert the power of the tides into electricity. Johnston explained “A 1-meter prototype ScotRenewables is experimenting with in the wave tank is built. It looks like a model rocket with two fins with propellers attached to the ends of the fins.” C Tidal is the potentially most predictable, reliable form of renewable energy. With a tide table and computer, ScotRenewables can calculate the power output of a turbine decades in advance. You can’t do that with intermittent, variable sources like wind, solar or wave. Unfortunately, harnessing tidal power is quite difficult. Some of the prototypes that have been tested in the decades are quickly destroyed by rushing tides. Pulling those turbines up from the sea bed and taking them into the shop consumes time and money. Taking the ScotRenewables turbine in for repairs should be easy: maintenance workers would just have to take a boat out, unhook it, and put another in its place while the first is being entangled. D Tidal power is also 50 percent stronger at the surface than at the seabed so these turbines should be capable of generating more power. Other companies have tried to create surface tidal turbines before. The difficulty has been keeping the turbine pointed in the direction of the tide. Some get washed away. Other times, the creators build large superstructures around the turbine, which costs money. ScotRenewables says it will come up with control mechanisms and advanced hydrodynamics (i.e., aerodynamics in water) to keep the turbines pointed in the right direction. E Scotland is betting heavily on wind and wave power. The notoriously harsh waves and currents of the Pentland Firth, a channel which separates the main body of the U.K. with the Orkneys that is often referred to as the Saudi Arabia of Marine Energy by locals. By 2020, Scotland wants to get half of its power from renewable sources, including large hydroelectric dams. Hydroelectric constitutes about 11 percent of the country’s power now and 9 percent comes from wind and other renewables. A large portion of the new renewable sources of power will come from wind, tidal and wave. Marine energy could provide up to 35 terawatt hours of power to the U.K. by 2020 and 84 terawatt hours of power by 2050, according to Edwina Cook, business development officer at EMEC. The U.K. in 2004 consumed 340 terawatt hours of power. The EMEC has created tidal and wave testing centers for companies to build and validate prototypes. (The Pelamis-that sea snake looking wave power device-was tested at EMEC before commercial rollouts in Portugal.) The government has also passed exceptionally large credits for power providers that put tidal and wave power on the grid. (Prototypes participating in the EMEC test beds are actually connected to the grid and selling small amounts of power.) The hope is that the programme will create jobs, exports and green energy. Offshore, the Dublin based open Hydro Power is already testing a large tidal device that looks like a big rotating fan. F Talking about the prototype and commercial power production, however, is easier said than done. ScotRenewables did not like the software simulation tools it found when it first set out. Some software focused on tidal changes; others focused on waves. To build an effective surface tidal turbine, Johnston realized that both tidal and wave power should be taken into account. Thus, it had to build its own tools, which cost several thousands. It also built its own wave tank. It was easier than trying to book time at an EMEC wave tank. The company now hopes to lease time on the tank to other wave companies to generate revenue. And, because ships to deploy tidal and wave devices are in short supply, it is contemplating buying or building its own multi-purpose vessel. Which paragraph contains the following information? Write the correct letter, A-F, in boxes 1-4 on your answer sheet. 1. New plan has been made to involve a new factor besides tidal. 2. Damages have happened to the models in the past years. 3. A detailed structure of a model is demonstrated. 4. The immature model is expected to apply at the beginning of the twenty first century after further development.
问答题Directions:In this section, there is one passage followed by a summary. Read the passage carefully and complete the summary below by choosing no more than three words from the passage. Remember to write the answers on the Answer Sheet. Questions 1 - 5 are based on the following passage.The United Kingdom Britain (or Great Britain) is an island that lies off the north-west coast of Europe. The nearest country is France, which is 20 miles away and from which Britain is separated by the English Channel. The island is surrounded by the Atlantic Ocean to the west, and the North Sea to the east. It comprises the mainlands of England, Wales and Scotland, that is, three countries. Scotland is in the north, while Wales is in the west. Ireland, which is also an island, lies off the west coast of Britain. It consists of Northern Ireland and the Irish Republic. Britain together with Northern Ireland constitute the United Kingdom (UK). Thus, the United Kingdom is composed of four countries, the largest of which is England. The capital city is London, which is situated in south-east England. The UK has a total area of about 244,100 square kilometres (94,248 square miles). About 70% of the land area is devoted to agriculture, about 7% is wasteland, moorland and mountains, about 13% is devoted to urban development, and 10% is forest and woodland. The northern and western regions of Britain, that is Scotland and Wales, are mainly mountainous and hilly. Parts of the north-west and centre of England also consist of mountains and hills. Britain has a generally mild and temperate climate. It is, however, subject to frequent changes. It has an average annual rainfall of about 120 centimetres (47 inches). In 1998 the population of the United Kingdom was nearly 59 million. The density of population was approximately 240 people per square kilometre. However, in England, where 83% of the population live, the density was much higher, about 363 per square kilometre. In the UK, English is the first language of the vast majority of people. However, in western Wales, Welsh is the first language for many of the people. In Scotland only a small number of people speak Gaelic. In Britain about 66% of the population say that they are Christian, while fewer than 5% say that they belong to other religions. Summary: Britain is an island that 1 the Atlantic Ocean and the North Sea. It comprises the mainlands of England, Wales and Scotland. Ireland 2 the west coast of Britain. I 3 Northern Ireland and the Irish Republic. The United Kingdom consists of Britain together with Northern Ireland. The capital city is London which 4 outh-east England.In 1998 the population of the UK was nearly 59 million. The density of population was 240 people per square kilometre. In the UK English is the first language of most people. In western Wales, Welsh 5 many of the people, but few people in Scotland speak Gaelic.
单选题A person on a fixed, or floating platform engaged in oil exploration, located 10 nautical miles from nearest land MAY discharge （）.Afood wasteBfood, ground to less than 1Cpaper, ground to less than 1DNone of the above
单选题According to information given in the passage, which of the following statements presents the most accurate comparison of an average ton of coal from Wyoming with an average ton of coal from the Appalachian range in West Virginia?AThe former is cheaper and has higher sulfur content than the latter.BThe latter is found closer to the surface and contains more sulfur than the former.CThe former can help coal-burning power plants meet limits on sulfur dioxide emissions and costs more than the latter.DThe latter generates more energy per pound of coal than the former.EThe former is found closer to the surface than the latter and helps coal-burnning power plants meet limits on sulfur dioxide emissions.
单选题Companycom has purchased a p5 590 with 16 CPUs. To run Simultaneous Multi-Threading (SMT) with a 4-way virtual processor partition with 2.0 processing units of entitlement, how many logical CPUs will be allocated?（）A8-way logical CPU partition, where each logical CPU has the power of 25% of a logical processor B4-way logical CPU partition, where each logical CPU has the power of 50% of a physical processor C8-way logical CPU partition, where each logical CPU has the power of 25% of a physical processor D16-way logical CPU partition, where each logical CPU has the power of 25% of a physical processor
单选题According to the passage9 which of the following statements is NOT TRUE?ASolar panels are very expensive to install.BSheridan Community Schools is completely solar-powered.CIn 2014, fewer than l,000 schools used solar power in the US.DMore and more schools are switching to solar power to cut costs.
单选题A sweep oar is an oar that is（）.Agenerally shorter than the others and is used to steer withBis longer than the others and is used as the stroke oarCis raised in the bow of the boat for the steersman to steer byDlonger than the others used for steering
单选题The raised artificial islands known as crannogs, built in medieval times in Ireland and Scotland, ______ consist of post palisades sunk into the lake.AcurrentlyBtypicallyCcursorilyDimprudentlyEespecially
问答题This section consists of one passage followed by a summary. Read the passage carefully and complete the summary below by choosing no more than three words from the passage for each blank. Remember to write the answers on the answer sheet. Questions 1 to 5 are based on the following passage. The giant panda, the creature that has become a symbol of conservation, is facing extinction. The major reason is loss of habitat, which has continued despite the establishment, since 1963, of 14 panda reserves. Deforestation, mainly carried out by farmers clearing land to make way for fields as they move higher into the mountains, has drastically contracted the mammal’s range. The panda has disappeared from much of central and eastern China, and is now restricted to the eastern flank of the Himalayas in Sichuan and Gansu provinces, and the Qinling Mountains in Shanxi province. Fewer than 1, 400 of the animals are believed to remain in the wild. Satellite imagery has shown the seriousness of the situation; almost half of the panda’s habitat has been destroyed or degraded since 1975. Worse, the surviving panda population has also become fragmented; a combination of satellite imagery and ground surveys reveals panda “islands” in patches of forest separated by cleared land. The population of these islands, ranging from fewer than ten to more than 50 pandas, has become isolated because the animals are unwilling to cross open areas. Just putting a road through a panda habitat may be enough to split a population in two. The minuscule size of the panda populations worries conservationists. The smallest groups have too few animals to be viable, and will inevitably die out. The larger populations may be viable in the short term, but will be susceptible to genetic defects as a result of inbreeding.In these circumstances, a more traditional threat to pandas—the cycle of flowering and subsequent withering of the bamboo that is their staple food—can become literally species—threatening. The flowerings prompt pandas to move from one area to another, thus preventing inbreeding in what would otherwise be sedentary populations. In panda islands, however, bamboo flowering could prove catastrophic because the pandas are unable to emigrate. The latest conservation management plan for the panda, prepared by China’s Ministry of Forestry and the World Wide Fund for Nature, aims primarily to maintain panda habitats and to ensure that populations are linked wherever possible. The plan will change some existing reserve boundaries, establish 14 new reserves and protect or replant corridors of forest between panda islands. Other measures include：better control of poaching, which remains a problem despite strict laws, as panda skins fetch high prices; reducing the degradation of habitats outside reserves; and reforestation. The plan is ambitious. Implementation will be expensive—56.6 million yuan(US $12.5 million)will be needed for the development of the panda reserves—and will require participation by individuals ranging from villagers to government officials.Summary The survival of the giant panda is being seriously threatened. Panda numbers have already seriously decreased. This is largely because the overall size of their 1 has been reduced, and habitable areas are now disconnected from each other. Two results are that pandas are more prone to 2 problems and are unable to move around freely to follow the growth cycles of the bamboo that they eat. A new plan aims to 3 existing panda habitats and to join many of them together. This plan also includes reforestation and the creation of 4 To succeed ,everyone ,including both the government and 5 will have to cooperate.
单选题The recent test in Britain shows that.AEMS provides better services than the private couriersBthe private couriers are as cheap as EMSCthe private couriers are faster than EMSDEMS is always cheaper than the private couriers
单选题A VLCC (100，000 DWT+) with a 30，000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a（）.Abigger propellerBsmaller power to weight ratioCsmaller propellerDlarger power to weight ratio
单选题What is the author's main purpose in the passage?ATo prove that football is the world's most important sport.BTo show that Argentina is better than all others.CTo compare Scotland with Argentina.DTo explain the role of sport.
单选题According to the passage, which of the following countries attracts more tourists than the others?AItalyBspainCFranceDGreece
单选题What is the fourth paragraph of the passage mainly about?AThe ways to use solar power.BThe advantages of solar power.CThe places to build the solar power plants.DThe difficulties of putting solar power to use widely.
单选题According to the passage, if a city has several business districts _____.Apeople won’t have to drive to work every dayBthere have to be more roads and parking spacesCcompanies would be located in between the districtsDthere would be no need to build parking spaces within the districts
单选题What is the author’s main purpose in the passage?ATo prove that football is the world’ most important sport.BTo show that Argentina is better than all others.CTo compare Scotland with Argentina.DTo explain the role of sport.
问答题Do the Argentinian really believe that because eleven of their men proved the most skilful at football, their nation is in ever)r way better than all others?