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
The demand for energy is certain to increase...as an ever larger population strives to improve its standard of living. Petroleum
The demand for energy is certain to increase...as an ever larger population strives to improve its standard of living. Petroleum
admin
2019-09-29
79
问题
The demand for energy is certain to increase...as an ever larger population strives to improve its standard of living. Petroleum, natural gas, hydroelectricity, supply networks, new renewable energy technology, nuclear energy and more... Managing the energy challenge each country faces is very complex nowadays and will be decisive for the future.
The future for petroleum use at the moment looks rather uncertain, despite enjoying the major benefit of a very advanced infrastructure already in place. The downsides from the environmental point of view are patently obvious: harm to public health through carbon dioxide emissions in exhaust fumes.
The picture for natural gas is similarly mixed. While its main strength lies in its being a relatively clean fuel involving little processing and being easily transportable via pipelines, natural gas requires compression or low temperatures if it is to be used for cars or other vehicles.
Yet there is another problem with natural gas. It may produce less carbon dioxide than other fossil fuels, but the major stumbling block to its use is that the methane released lives for a long time in the atmosphere. In addition, as it is a no-renewable energy source like petroleum, in coming years natural gas will not be in use. But in the short term at least, the situation looks rosy.
Ethanol, the production from grain is relatively straightforward. It is made from harvested crops. As the demand for alternative ’clean’ fuels increases, farmers are switching from planting crops for consumption to fuel crops like corn, barley, wheat or others that produce oil like palm and rape seed. Despite the drawback of a shortage of commercial outlets, ethanol heralds a new dawn for the energy market. But, before we consider ethanol in depth, let’ s look at hydrogen. It is perhaps the most attractive of all renewable fuels. Its greatest appeal is that it is readily available everywhere in the form of water. Solar energy is used to split the water into hydrogen and oxygen and then recombine it, with water being the waste by-product. Perhaps its main drawback is making the hydrogen production units small enough to fit cars. But once this happens, the future of hydrogen is bright indeed.
We are facing a real urgency with the climate crisis aroused by burning fossil fuels like coal and oil for energy. Many scientists say we need to lower CO
2
level by sixty percent over the next forty years. If we don’ t, there could be terrible consequences for the environment and the world economy. Though governments are talking about ways to lower pollution levels, they may not be enough. By going carbon neutral, people and businesses can really do something to meet this global challenge.
Questions 56 ~ 60
Complete the following schema with no more than three words according to the passage.
选项
答案
new dawn
解析
同上。因此,空格处应填new dawn。
转载请注明原文地址:https://kaotiyun.com/show/IKNK777K
本试题收录于:
C类竞赛(非英语专业本科)题库大学生英语竞赛(NECCS)分类
0
C类竞赛(非英语专业本科)
大学生英语竞赛(NECCS)
相关试题推荐
Ontheeveningofhis18thbirthday,ateenagerfromatinyvillagenorthernGermanyclicked‘send’onhiscomputer.Withinthre
Ontheeveningofhis18thbirthday,ateenagerfromatinyvillagenorthernGermanyclicked‘send’onhiscomputer.Withinthre
BeforetheConsultantsArriveManagementconsultantsareadvisershiredbyacompanytohelpimproveoveralloperations.The
BeforetheConsultantsArriveManagementconsultantsareadvisershiredbyacompanytohelpimproveoveralloperations.The
Itisjustaboutimpossibletoimaginehowbigtheuniverseis.Allwecandoistodescribecertainthingsweknowaboutitand
SummaryListentothepassage.Forquestions26—30,completethenotesusingnomorethanthreewordsforeachblank.Peopleare
CyclingthroughEuropewasconsideredtobeoneofJenny’sfantastictips.
What’sthemostprobablerelationshipbetweenthemanandthewoman?
Juliealwaysthoughtofherselfasaneasy-goingand______person,whoputupwithpeople’speculiarities.
Ashipwithaheavyloadoftimberisreportedtohavesunk______thecoastofCalifornia.
随机试题
简述审美经验的两种直观性。
中国足协2014年2月28日举行新闻发布会,正式宣布法国教练________出任中国男足国家队主教练。其成为国足第八任外籍主帅。()
依照《中华人民共和国国境检疫法》和《中华人民共和国检疫条例实施细则》的规定,我国检疫的传染病有
肝素抗凝作用的主要机制是
患部红肿高大、根盘紧束,焮热疼痛者为患部形小如粟,顶白根硬而深,麻木痒痛者为
夏军在升入高中后感觉压力特别大,无法适应高中生活。而他的父母也觉察到他与同龄孩子不同,对如何教育他感到很迷茫,不知如何处理他在性格、学习和成长方面的困惑。于是,夏军在老师的介绍下接受了学校社会工作者的协助。对于学校社会工作者来说,夏军的父母属于(
下列哪一位作曲家的音乐风格是“追求感官印象的描绘”?()
请用不超过150字的篇幅,全面,有条理,有层次地概括出给定材料所反映的主要问题,并概括出在征收遗产税问题方面对立双方的意见和理由,字数不超过400字。就给定资料所反映的主要问题,用1200字左右的篇幅,自拟标题进行论述。要求中心明确,内容充实,论述深刻
已知A,B均为3阶矩阵,矩阵X满足AXA-BXB=BXA-AXB+E,其中E是3阶单位矩阵,则X=().
AmericanFamiliesTypesofAmericanfamilies.thetraditionalAmericanfamily:aworkingfather,【T1】________,andtwo
最新回复
(
0
)