大学英语四级175及答案解析.doc
《大学英语四级175及答案解析.doc》由会员分享,可在线阅读,更多相关《大学英语四级175及答案解析.doc(26页珍藏版)》请在麦多课文档分享上搜索。
1、大学英语四级 175及答案解析(总分:746.57,做题时间:130 分钟)一、Writing (30 minutes)(总题数:1,分数:30.00)1.For this part, you are allowed 30 minutes to write a composition on the topic Changes in the Way People Spent Holidays. You should write at least 120 words according to the outlines given below in Chinese: (分数:30.00)_二、Rea
2、ding Comprehensio(总题数:1,分数:71.00)Wind Energy Wind energy development has been thriving both in the United States and around the world. This reflects not only the declining cost of the resource and the improved performance of wind power plants, but also a growing awareness among utilities and other p
3、otential customers that this renewable energy technology offers many benefits for the economy and the environment. -Wind energy can help create new business and jobs, keep energy dollars circulating in local economies and reduce reliance on imported energy. -Wind energy can help protect utilities an
4、d ratepayers from risks associated with changing fuel prices, new environmental regulations, uncertain load growth and other unpredictable costs. -Wind energy can reduce a utilitys pollutant emissions, helping power companies meet environmental regulations and satisfy their customers desire for clea
5、n power sources. In the past, these benefits were not enough to outweigh the significant costs and technological uncertainties associated with wind energy; now that the technology has proven reliable and competitive, however, they are beginning to carry more weight. The greatest challenge for the fu
6、ture is to ensure that the benefits of wind energy continue to receive attention as the utility industry moves toward increased competition in the generation and marketing of power. How does wind energy contribute to the economy? Electricity is an essential ingredient of our modern way of life: it r
7、uns our computers, appliances, factories and businesses. Without low-cost power, our standard of living would suffer. But electricity generation is also a major source of pollution and toxic wastes. Wind energy offers a way to meet the needs of both the economy and the environment by providing a sou
8、rce of clean, competitively priced power. Wind energy helps our economy in important ways. For communities and states in which wind power facilities are located, wind power plants create jobs, generate income and support economic development. Several studies have established that wind energy produce
9、s more Jobs per dollar invested or per kilowatt-hour generated than most conventional resource. A New York study, for example, found that producing 10 million kilowatt-hours of electricity from wind energy generates 27 percent more jobs in the state than producing the same amount of energy from an a
10、dvanced coal plant and 66 percent more jobs than from a natural gas combined-cycle power plant. One reason is that much of the expense for fossil-fuel plants is incurred from buying fuel, which supports fewer jobs than other industry sectors, especially when the fuel is imported from other states or
11、 countries. Wind power plants also pay substantial property taxes and land rents. A typical rent payment is a small percentage of a plants revenues, implying that a wind plant located in an agricultural area can boost cropland rents and prices by as much as 50 percent to 100 percent. For the most pa
12、rt, farming operations can continue unaffected. States and communities with the foresight to invest in wind energy can reap another benefit by fostering a home-grown wind industry that can export power to other regions. The market for wind power worldwide is growing rapidly. New companies that captu
13、re this market will develop in areas where substantial wind development already is occurring. Until the late 1980s, this was mainly California; recently, however, the United States has ceded (转让) its early lead in wind development to European competitors. Prudent investments in the domestic wind mar
14、ket can help reverse this trend. What are the advantages of wind power plants? Most consumers like to avoid risk: The chance that something they need, no matter how inexpensive today, will become much more costly tomorrow. Fixed-rate mortgages owe much of their popularity to this characteristic. Whi
15、le other loan packages may be less expensive in the short-term, many homeowners like the comfort of knowing that their monthly mortgage bill will never increase. Like a fixed rate mortgage, investing in wind energy offers an effective strategy for managing risk, a way of buying an insurance policy a
16、gainst the ups and downs of the power market. It is especially effective against three kinds of risk: environmental regulation, fuel price volatility and load-growth uncertainty. The typical wind power plant takes less than a year to build, once the site is selected and licenses and permits approved
17、. By contrast, conventional large power plants may take three to four years to build with the result that if loads do not increase as expected, a utility may be left with a substantial excess cost. Another advantage of wind power plants is that they can be built in phases timed according to need. Fi
18、nally, interest costs are lower during the construction of wind projects. Does wind energy produce pollution? Opinion polls rank wind as one of the most popular energy resources, far ahead of fossil fuels and nuclear power. The reason is simple: it produces no pollution or hazardous wastes. This is
19、a very real benefit, for pollution can have a serious effect on our health, the economy and our sense of well being. Air pollutants such as carbon monoxide, nitrogen oxides, particulates and volatile organic compounds have been shown to reduce lifespans and increase the incidence of debilitating ill
20、nesses, especially among the elderly and those with respiratory impairments. Some pollutants, such as sulfur dioxide and ozone, damage wildlife and plants and even reduce crop yields. Finally, greenhouse gases (which are emitted primarily by fossil-fuel combustion) are implicated in global warming,
21、which may cause major changes in climate during the next several decades. Wind powers popularity with the public can be a competitive advantage for power companies that invest in this technology. Municipal utilities, large industrial consumers, and perhaps even residential consumers in some location
22、s soon may be able to express a preference for clean power by their choice of electricity supplier. Utility-sponsored market surveys show that a significant number of consumers are willing to spend more on their monthly utility bills to purchase power from renewable sources. Companies that want to a
23、ttract and keep such customers should give careful attention to wind power. Whether utilities continue to be tightly regulated or the industry moves into a more competitive phase, the significant benefits of wind energy should play an increasingly important role in deciding what kinds of new power p
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
2000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 大学 英语四 175 答案 解析 DOC
