首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
When George W. Bush delivered his State of the Union Address this past January, three words appeared that had not previously bee
When George W. Bush delivered his State of the Union Address this past January, three words appeared that had not previously bee
admin
2010-02-26
61
问题
When George W. Bush delivered his State of the Union Address this past January, three words appeared that had not previously been heard from the Oval Office: Switchgrass, stalks and woodchips.
Bush’s signals on renewable energy have been decidedly mixed. Shortly before he visited the National Renewable Energy Laboratory (NREL) in Colorado last February, a $5 million funding shortfall forced the lab to lay off 32 workers. Bush blamed the layoffs, and NREL got its funding back.
Switchgrass is a fast-growing perennial plant native to the central and eastern U.S. and tolerant of many different soil types. To make cellulosic ethanol, switchgrass -- or any cellulose-based plant -- is broken down to make sugar, then fermented to make the fuel. Supporters say that when blended with petroleum products, ethanol from switchgrass results in a net energy gain of 334 percent, compared to just 21 percent for corn- based ethanol.
The cellulosic process has been invented and is being refined, but it hasn’t been commercialized, and that’ s what is preventing it from going into our tanks today, says former CIA Director James Woolsey, among switchgrass’ s biggest supporters.
Corn-based ethanol has made great strides. According to Tom Slunecka, executive director of the Ethanol Promotion and Information Council, the U.S. currently produces four billion gallons a year, or approximately three to four percent of the fuel supply. "It’ s growing rapidly," he says. "By 2012 we’ re projecting 7.5 billion gallons, but I think we’ 11 far surpass that." Automakers get federal tax credits for producing "bi-fuel" cars and trucks that can nm on ethanol, but until recently the lack of an ethanol refueling infrastructure (永久性设施) obstructed the actual use of the fuel. But now General Motors and other carmakers are promoting ethaonol vehicles with a new vigor. Even without bi-fuel technology, all cars today can burn a 10 percent ethanol blend
Slunecka says biobased ethanol production is still in its infancy: He cites a Canadian plant currenty producing 100,000 gallons per year. "It works, it’ s not science down the road," he says. "Private companies m trying to crack the cost barrier. But the feedstock potential is enormous. I can’ t wait until these cellulosic plants are bolted onto the front side of traditional ethanol plants."
David Bransby, a professor in Auburn University’ s Agronomy Department, says we need to take action because we’ re in an international competition. "Europe is ahead of everybody in the use of biodiesel, and Brazil! is leading the world in the production and use of ethanol. We are behind. I hope that the President’ s address indicates that there is going to be a change, but he’ s fighting a war in Iraq and trying to recover from two, hurricanes. To be quite honest, these alternative fuels are just as important as those other things. It’s all part o national security and needs to be treated with the same priority."
______ is a professor of agriculture.
选项
A、George W. Bush
B、Tom Slunecka
C、James Woolsey
D、David Bransby
答案
D
解析
细节题。本题考查迅速找寻相关信息的能力,不难。题目把原文的表述(a professor in Auburn University’s Agronomy Department 更换了措辞(a professor of agriculture ,因此,可利用关键词professor迅速在文章中进行搜寻。
转载请注明原文地址:https://kaotiyun.com/show/6idK777K
0
大学英语六级
相关试题推荐
A、Inthemorning.B、Lateatnight.C、After5:30.D、Atorbefore5:30.DM:There’snousegoingtothestorenow.W:Youaretigh
Beforetheageofseventy,Mr.Hummer______.Hisfriendssaidhewasdifficulttodealwithbecause______.
AsanMBAstudent,Heardknowssomethingabouthissonmainlyvia______.Beforetheirsonwasborn,thespousecouldseeeach
Thispassageismainlyaboutthedevelopmentandsafetyofrobots.Robotsforindustrialapplicationsappearedearlierthantho
BeforeDNAfingerprintingisused,suspects______.TheNationalAcademyofSciencesholdsthestancethat______.
BeforeDNAfingerprintingisused,suspects______.Accordingtothepassage,DNAfingerprintingcanbeunreliablewhen______.
Itcanbeinferredfromthepassagethat______.Itisstatedinthepassagethatbeforetheintroductionoftelevision,politi
A、Beforetheendoftheyear.B、BeforetheendofFeb.C、Beforetheendoffall.D、Beforetheendofspring.BWhenshouldyouse
ThefiveU.S.navyplaneswhichdisappearedintheBermudaTrianglein1945mighthavebeenfoundifanotherplanehadbeensent
ThefiveU.S.navyplaneswhichdisappearedintheBermudaTrianglein1945mighthavebeenfoundifanotherplanehadbeensent
随机试题
下列叙述中正确的是()。
我国十大军事原则的核心是()
下颌神经含有哪些纤维成分?其感觉支有哪些分支?
下列有关烟酸的描述错误的是
肺气肿发生的机制,目前认为包括下列哪些
阿卡波糖是
甲企业(增值税一般纳税人)为白酒生产企业,2016年4月发生以下业务:(1)向某烟酒专卖店销售粮食白酒20吨,开具普通发票,取得含税收入2000000元,另收取品牌使用费500000元。(2)提供100000元(不含税)的原材料委托乙企业加工散装药酒1
在确定审计收费的下列情况中,违反注册会计师职业道德守则的情况是()。
事后救济原则
通常认为,决定局域网特性的主要技术有三种,它们是传输介质和()。
最新回复
(
0
)