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提问人：网友highmayor
发布时间：2022-01-07
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What is a major source of renewable energy in agricultural areas？
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更多“What is a major source of renewable energy in agricultural areas？”相关的问题
第1题
2. The United Nations first propose the concept of "sustainable development" in the magazine .
第2题
What is the main advantage of subsidising renewable energy generation?
A．It equalises the cost of all types of electricity generation
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B．It encourages innovation that may in future lead to new energy sources
C．It promotes external investment in energy
D．Renewable generation is established and in place in preparation for future energy problems
第3题
阅读材料，回答题：
Renewable Energy Sources
Today petroleum(石油) provides around 40% of the world&39;s energy needs, mostly fuellingautomobiles. 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, sup-plying around 20% of world electricity. China&39;s Three Gorges Dam is the largest ever. At five timesthe size of the U. S. &39;s Hoover Dam, its 26 turB．ines(涡轮机) will generate the equivalent energyof 18 coal-fired power stations. It will satisfy 3% of China&39;s entire electricity demand.
In 2003, the first commercial power station to use tidal (潮汐的) currents in the open seaopened in Norway. It is designed like windmill(风车), but others take the form. of turB．ines.
As prices fall, wind power has become the fastest growing type of electricity generation--quadrupling(翻两番) worldwide between 1999 and 2005. Modern wind farms consist of turbinesthat generate electricity. Though it will be more expensive, there is more than enough wind to pro-vide the world&39;s entire energy needs. Wind farms come in onshore and offshore forms. They can of-ten end up at spots of natural beauty, and are often unpopular with residents. And turbines are nottotally harmless--they can interfere with radar, alter climate and kill seabirds. Scotland is build-ing Europe&39;s largest wind farm, which will power 200,000 homes. The U. K. &39;s goal is to generateone-fifth of power from renewable sources, mainly wind, by 2020. but this may cause problems,because wind is unreliable.
According to the passage， which of the following is the most polluting energy resource？ 查看材料
A.Petroleum
B.Coal
C.Natural gas
D.Water
第4题
Renewable energies like wind, solar, hydro and bio-fuels cover much larger areas of land than more concentrated energies like nuclear and fossil fuels.
第5题
阅读理解。????Sustainable development is applied to...
| 阅读理解。 |
| Sustainable development is applied to just about everything from energy to clean water and economic growth, and as a result it has become difficult to question either the basic assumptions behind it or the way the concept is put to use. This is especially true in agriculture, where sustainable development is often taken as the measure of progress without a proper appreciation of historical and cultural perspectives. To start with, it is important to remember that the nature of agriculture has changed markedly throughout history, and will continue to do so. Medieval agriculture in northern Europe fed, clothed and sheltered a mainly rural society with a much lower population density than it is today. It had minimal effect on biodiversity, and any pollution it caused was typically localized. In terms of energy use and the nutrients captured in the product it was relatively inefficient. Contrast this with farming since the start of the industrial revolution. Competition from overseas led farmers to specialize and increase yields. Throughout this period food became cheaper, safer and more reliable. However, these changes have also led to habitat loss and to reducing biodiversity. All this means that agriculture in the 21st century will have to be very different from how it was in the 20th. This will require thorough thinking. For example, we need to move away from the idea that traditional practices are certainly more sustainable than new ones. We also need to abandon the notion that agriculture can be "zero impact". The key will be to abandon the rather simple and static (稳定的) measures of sustainability, which centre on the need to maintain production without increasing damage. Instead we need a more dynamic interpretation, one that looks at the pros and cons of all the various way land is used. There are many different ways to measure agricultural performance besides food yield: energy use, environmental costs, water purity, carbon footprint and biodiversity. It is clear, for example, that the carbon of transporting tomatoes from Spain to the UK is less than that of producing them in the UK with additional heating and lighting. But we do not know whether lower carbon footprints will always be better for biodiversity. What is important is recognizing that sustainable agriculture is not just about sustainable food production. |
| 1. How do people often measure progress in agriculture？ |
| A. By its impact on the environment B. By its contribution to economic growth C. By its productivity D. By its sustainability |
| 2. Specialization and the effort to increase yields have resulted in _____. |
| A. Localized pollution B. The shrinking of farmland C. the decrease of biodiversity D. competition from overseas |
| 3. What does the author think of traditional farming practices？ |
| A. They are not necessarily sustainable B. They have not kept pace with population growth C. They have remained the same over the centuries D. They are environmentally friendly |
| 4. What will agriculture be like in the 21st century？ |
| A. It will abandon traditional farming practices B. It will mainly keep traditional farming C. It will go through complete changes D. It will cause zero damage to the environment |
| 5. What is the author's purpose in writing this passage？ |
| A. To remind people of the need of sustainable development. B. To urge people to rethink what sustainable agriculture is. C. To advance new criteria for measuring farming progress. D. To suggest ways of ensuring sustainable food production. |
第6题
只需填写所选单词前的大写字母。 [图] A majority of A...
只需填写所选单词前的大写字母。
A majority of Americans has a favorable view of American popular culture, though a large minority of the public is pessimistic about the quality of US movies and television. Americans are divided about the spread of American culture, but only a small minority considers the led of US culture a threat to other cultures. When it comes to globalization bringing greater cultural influences into the US, Americans 1)__________ a positive attitude. One of the most 2)__________ aspects of globalization is the worldwide spread and dominance of American culture. Just as US goods flooded world markets in the post-Word War II era, US culture is now penetrating every continent through the 3）__________ growth of mass communications such as music, television, films and the Internet, as well as through the penetration of American 4)__________ into foreign countries. From China to France to the Middle East, foreign leaders and activists have expressed fear that global culture may become too Americanized, destroying their own cultural, economic, and religious traditions. Where does the majority public 5)__________? 1)__________
第7题
The U.K. has larger energy resources, including oil, natural gas, and coal, than any other European Union member.
