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1、2017英语专四听力5篇2017英语专四听力5篇引导语：以下是百分网小编为大家整理的英语专四听力5篇，希望能帮助考生更好地备考英语专四，欢迎阅读!听力一Open-source software开源软件Open-source software is computer software that isavailable to the general public in source code form.开源软件是一种公开源代码的计算机软件。If a person has enough knowledge about computersand computer programming,如果一个人有足
2、够的计算机或者计算机编程知识，he or she can change the program s source code.他或她就能改变程序的源代码。The source code is like a set of directions that showthe program how to operate.源代码就是一组指令显示程序如何操作。People change the codes so that the program will operate in a way that will meet their needs.人们改变编码，使程序以他们想要的方式来运行。Sometimes c
3、hanging the code will make the program run faster.有时候改变程序代码会使程序运行更快，Or it will take problems out of the program.或者解决程序中的问题。These problems can cause a computer program to shut down.这些问题可能引起程序关闭。People who change the source code of a computer program share these programs with eachother on the Internet
4、.改变计算机程序源代码的人在因特网上与他人共享这些修改过的程序。Programmers enjoy being able to improve computer programs on their own.程序员们乐于自己去改善程序，They enjoy being able to ask other people on the Internet for help with their programs.他们在因特网上寻求关于程序的帮助。Working together, people can improve computer programs for the good of the grou
5、p.在一起工作，人们可以提高计算机程序的集团利益。听力二Skyscrapers摩天大楼Skyscrapers were invented in the United States.摩天大楼最终诞生于美国。As early as the 1880s, two new technicaldevelopments made these taller buildings possible.早在19世纪80年代，两项新技术的发展使得这些高楼成为可能。One development was the mechanical elevator.第一项是机械电梯，It meant that people woul
6、d not have to climb manysteps to reach the upper floors of tall buildings.这意味着人们不用爬很多级楼梯才能到达高层建筑的较高楼层。The development of steel building technology also helped make taller buildings possible.钢铁建筑技术的发展也促使了更高层建筑的诞生。Many experts consider the Home Insurance Building in Chicago to be the first skyscraper.
7、许多专家认为芝加哥的家庭保险大楼是第一座摩天大楼。This tower was about 55 meters tall.它高55米，Today this would not be considered much of a skyscraper.这个高度在现在并不算是摩天大楼，But at the time, this height was striking.但在当时已经很惊人了。The structure was built using a steel frame.整个建筑使用钢铁框架建造，This frame was load-bearing,meaning that the steel
8、skeleton would support the building sweight, not its walls.这个框架是承重的，意味着钢架要支撑这栋楼的重量，而不是墙。Before this technology, a taller building required creating thicker stone walls to support itsweight.在这项技术之前，高楼要求用更厚的石头来建墙。Thick walls are extremely heavy,and allow less room for windows and light.厚墙非常笨重，留给窗户和光线的
9、空间很少。听力三Corporations公司A corporation is a kind of business organizationwith an unlimited lifetime.股份有限公司是一种无时间限制的企业组织形式。Corporations can sell stock as a way to raise money.公司可以通过出售股票来筹集资金。Stock represents shares of ownership in acompany.股票是个人持有公司股份多少的凭证。Investors who buy stock can trade their shares
10、orkeep them as long as the company is in business.只要公司处于经营之中，投资者可以随意出售或一直持有自己的股份。A company might use some of its earnings to pay dividends as a reward to shareholders.公司获利后，会将收益的一部分当作回报分给股东，Or it might reinvest the money into the business.或是将钱再投资到公司的项目。If shares lose value, investors can lose all of
11、 the money they paid for their stock.如果股份失去价值，投资者就会亏掉购买股票的资金，But shareholders are not responsible for the debts of the corporation.但他们不承担公司债务。A corporation is a legal entity separate from its owners.股份有限公司是独立于所有者以外的法律实体。A board of directors controls corporate policies.董事会负责制定公司政策，The directors appoi
12、nt top company officers,but might or might not hold shares in thecorporation.他们可以任命公司高级职员，但却不一定持有公司的股份。Corporations can have a few major shareholders.公司可以有几个主要股东，Or ownership can be spread among the general public.也可以将所有权分散给大众。听力四Insurance保险Insurance is a guarantee against financial loss.保险是降低经济损失的一
13、种保障。Insurance policies can be bought for all sorts ofthings.保险无所不保，The most common kinds of insurance include life,health and property.最常见的包括:人寿保险，健康保险及财产保险。For example, an insurance company will pay torepair or replace the property if it is damaged or stolen.例如:如果投保人的财产受到损毁或被盗，保险公司会为投资人支付维修或重购的费用。How much a company will pay in the event of a claim depends on how much insurance thepolicyholder has bought. The amount may also depend on the conditions that led to thedamage.保险金赔偿的多少不仅与投保人购买保险金的多少有关，而且还与造成投保人损失的实际情况有关。There are two main kinds of insurance companies.保险公司有两大类:
