大学英语六级考试命题预测试卷2013上.pdf

大学英语六级考试命题预测试卷2013上.pdf
 

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《星火英语:大学英语6级考试命题改革与预测试卷(2013上)(题源版)》标准试题+详尽解析,深度破解六大题型,标准录音,光盘收录。

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大学英语六级考试命题预测试卷2013上

Part Ⅳ Reading Comprehension (Reading in Depth) (25 minutes)
Section A
Directions:In this section, there is a short passage with 5 questions or incomplete statements. Read the passage carefully. Then answer the questions or complete the statements in the fewest possible words. Please write your answers on Answer Sheet 2.Questions 47 to 51 are based on the following passage.
Population growth will mean over 100 million more people in the United States over the next four decades who will need energy and water to survive.Economic growth compounds that trend, as per-capita energy and water consumption tend to increase with development. Climate-change models also suggest that droughts and heat waves may be more frequent and severe.
Thankfully, there are some solutions.
The government can collect, maintain and make available accurate, updated and comprehensive water data. The Energy Information Administration maintains an extensive database of information on energy production, consumption, trade and price. Unfortunately, there is no equivalent set of data for water. Consequently, investors, analysts and policy makers lack the information they need to make informed decisions about power plant sitting or cooling technologies.
The government should also invest in water-related research and development to seek better aircooling systems for power plants, waterless techniques for hydraulic fracturing (水力压裂), and biofuels that do not require freshwater irrigation.
We should encourage the use of reclaimed water for irrigation, industry and the cooling of equipment at industrial operations. These steps typically spare a significant amount of energy and cost. The use of dry and hybrid (混合) wet-dry cooling towers that require less water should be encouraged at power plants, since not all of them need wet cooling all the time. As power plants upgrade their cooling methods to ones that are less water-intensive, these operations can save significant volumes of Water.
Most important, conservation should be encouraged, since water conservation results in energy conservation, and vice versa.
New carbon emissions standards can also help save water. A plan proposed by the Obama administration would encourage utilities to choose less carbon- and water-intensive fuels. Conventional coal plants, which are very thirsty, exceed the standards proposed by the President. But relatively clean, and water-lean, power plants that use wind, solar panels and natural gas combined cycle, would meet them. Thus, by enforcing CO2 limits, a lot of water use can be avoided.
Because rivers and aquifers (蓄水层) can span many states, because there is no alternative to water, and because water represents a critical vulnerability for our energy system, governments at all levels have a stake in working with industry to find solutions.

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《星火英语:大学英语6级考试命题改革与预测试卷(2013上)(题源版)》借助于具有多年教学经验的一线教师对六级考试改革方向的把握,力求做到紧跟命题改革方向,答案精确权威,解析深入详尽,对考生备考六级具有较高的指导性。《星火英语:大学英语6级考试命题改革与预测试卷(2013上)(题源版)》风靡全国,畅销十年,8000万读者的选择。四六级作文双命中!2012年12月共命中真题652分!10套预测+10天专项突破+备考宝典+300篇新闻听力。

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