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第三篇Renewable Energy SourcesToday petroleum (石油)provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel(矿物燃料). Natural gas reserves could fill some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years. Less polluting renewable energy sources offer a more practical long-term energy solution. "Renewable" refers to the fact that these resources are not used faster than they can be replaced.Hydroelectric(水力发电的) power is now the most common form of renewable energy, supplying around 20% of world electricity. China’s Three Gorges Dam is the largest ever. At five times the size of the US’s Hoover Dam, its 26 turbines(涡轮机) will generate the equivalent energy of 18 coal-fired power stations. It will satisfy 3% of China’s entire electricity demand.In 2003, the first commercial power station to use tidal (潮汐的)currents in the open sea opened in Norway. It is designed like windmill (风车), but others take the form of turbines.As prices fall, wind power has become the fastest growing type of electricity generation-quadrupling (翻两番)worldwide between 1999 and 2005. Modem wind farms consist of turbines that generate electricity. Though it will be more expensive, there is more than enough wind to provide the world’s entire energy needs. Wind farms come in onshore and offshore forms. They can often end up at spots of natural beauty, and are often unpopular with residents. And turbines are not totally harmless, they can interfere with radar, alter climate and kill sea birds. Scotland is building Europe’s largest wind farm, which will power 200, 000 homes. The UK’s goal is to generate one-fifth of power from renewable sources, mainly wind, by 2020. But this may cause problems, because wind is unreliable. Which country took the lead in making use of tidal currents to produce power in 2003 .9（）
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第一篇Motoring Technology1.2 million road deaths worldwide occur each year, plus a further 50 million injuries. To reduce car crash rate, much research now is focused on safety and new fuels, though some electric vehicle and biofuel research aims at going faster.Traveling at speed has always been dangerous. One advanced area of research in motoring safety is the use of digital in-car assistants. They can ensure you don’t miss important road signs or fall asleep. Most crashes result from human and not mechanical faults.Some safety developments aim to improve your vision. Radar can spot obstacles in fog, while other technology "sees through" big vehicles blocking your view.And improvements to seat belts, pedal (脚踏)controls and tires are making driving smoother and safer. The color of a car has been found to be linked with safety, as have, less surprisingly, size and shape.But whatever is in the fuel tank, you don’t want a thief in the driving seat and there have been many innovations(创新). Satellite tracking and remote communications can also come into play if you crash, automatically calling for help.Accidents cause many traffic jams, but there are more subtle interplays between vehicles that can cause jams even on a clear but busy road. Such jams can be analyzed using statistical tools. Robotic drivers could be programmed to make traffic flow smoothly and will perhaps one day be everyone’s personal chauffeur(司机) , but their latest efforts suggest that won’t be soon. According to the second paragraph, most road accidents happen due to（）.
Farmers’ MarketsCharlotte Hollins knows she faces a battle. The 23-year-old British farmer and her 21-year-old brother Ben are fighting to save the farm from developers that their father worked on since he was 14. (46) "You don’t often get a day off. Supermarkets put a lot of pressure on farmers to keep prices down. With fewer people working on farms it can be isolating, "she said. " There is a high rate of suicide and farming will never make you rich!"Oliver Robinson, 25, grew up on a farm in Yorkshire. (47) "I’m sure dad hoped I’d stay, "he said. "I guess it’s a nice, straightforward life, but it doesn’t appeal. For young, ambitious people, farm life would be a hard world. "For Robinson, farming doesn’t offer much "in terms of money or lifestyle. "Hollins agrees that economics stops people from pursuing farming rewards: "providing for a vital human need, while working outdoors with nature. "Farming is a big political issue in the UK. (48) The 2001 foot and mouth crisis closed thousands of farms, stopped meat exports, and raised public consciousness of troubles in UK farming.Jamie Oliver’s 2005 campaign to get children to eat healthily also highlighted the issue. This national concern spells (带来) hope for farmers competing with powerful supermarkets. (49) "I started going to Farmers’ Markets in direct defiance (蔑视)of the big supermarkets. (50) It’s terrible, "said Londoner Michael Samson.A. But he never considered staying on his father and grandfather’s land.B. While most people buy food from the big supermarkets, hundreds of independent Farmers’ Markets are becoming popular.C. While confident they will succeed, she lists farming’s many challenges.D. Young people prefer to live in cities.E. I seriously objected to the super-sizing of everything what exactly do they put on our apples to make them so big and red7F. "Buy British" campaigns urge(鼓励)consumers not to buy cheaper imported foods. 47（）
第一篇Motoring Technology1.2 million road deaths worldwide occur each year, plus a further 50 million injuries. To reduce car crash rate, much research now is focused on safety and new fuels, though some electric vehicle and biofuel research aims at going faster.Traveling at speed has always been dangerous. One advanced area of research in motoring safety is the use of digital in-car assistants. They can ensure you don’t miss important road signs or fall asleep. Most crashes result from human and not mechanical faults.Some safety developments aim to improve your vision. Radar can spot obstacles in fog, while other technology "sees through" big vehicles blocking your view.And improvements to seat belts, pedal (脚踏)controls and tires are making driving smoother and safer. The color of a car has been found to be linked with safety, as have, less surprisingly, size and shape.But whatever is in the fuel tank, you don’t want a thief in the driving seat and there have been many innovations(创新). Satellite tracking and remote communications can also come into play if you crash, automatically calling for help.Accidents cause many traffic jams, but there are more subtle interplays between vehicles that can cause jams even on a clear but busy road. Such jams can be analyzed using statistical tools. Robotic drivers could be programmed to make traffic flow smoothly and will perhaps one day be everyone’s personal chauffeur(司机) , but their latest efforts suggest that won’t be soon. Which of the following safety developments is NOT mentioned in the passage（）
A. that person’s health B. a scientific answer C. scientific researchers D. the genes E. the function F. the size The Human Genome Project is trying to map all ______ that make us human.
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