托福听力的练习中,音频练习至关重要,那么针对真题中的听力音频,对于大家来说,是提分的重要资料,那么具体的听力真题的音频内容有哪些?如何更好的来备考练习?下面小编为大家整理了详细的内容,供大家参考!

  Narrator:Listen to part of a lecture in an environmental science class.

  旁白:在环境科学课上听一部分讲座。

  Professor:All right,folks,let’s continue our discussion of alternative energy sources and move on to what’s probably the most well-known alternative energy source,uh,solar energy.The Sun basically provides Earth with a virtually unlimited source of energy everyday but the problem has always been how do we tap this source of energy?Can anyone think of why it’s so difficult to make use of solar energy?

  教授:好吧,各位,让我们继续讨论替代能源,然后继续讨论最著名的替代能源,呃,太阳能。太阳基本上每天为地球提供几乎无限的能源,但问题一直是我们如何利用这种能源?有人能想到为什么利用太阳能如此困难吗?

  Student A:Because it is hard to gather it?

  学生甲:因为很难收集?

  Professor:That’s exactly it!Solar energy is everywhere but it’s also quite diffused.And the thing is the dream of solar energy is not a new one,humanities have been trying to use the Sun’s light as a reliable source of energy for centuries.And,uh,around the beginning of the twentieth century,there were actually some primitive solar water heaters on the consumer market,but they didn’t sell very well.Any of you want to guess why?

  教授:就是这样!太阳能无处不在,但也相当广泛。问题是,太阳能的梦想并不是一个新的梦想,几个世纪以来,人文学科一直试图利用太阳光作为可靠的能源来源。而且,呃,大约在二十世纪初,消费者身上确实有一些原始的太阳能热水器市场,但他们卖得不好。你们想猜为什么吗?

  Student A:Well,there were other energy choices like oil and natural gas,right?

  学生甲:还有其他的能源选择,比如石油和天然气,对吧?

  Professor:Yeah!And for better or for worse,we chose to go down that path as a society.When you consider economic factors,it’s easy to see why.But then in the 1970s,there was an interest in solar energy again.Why do you think that happened?

  教授:是的!不管是好是坏,作为一个社会,我们选择了走这条路。当你考虑经济因素时,很容易明白为什么。但是在20世纪70年代,人们又对太阳能产生了兴趣。你认为这是为什么?

  Student B:Because oil and natural gas were...err...became scarce?

  学生乙:因为石油和天然气……呃……变得稀缺了?

  Professor:Well,not exactly.The amount of oil and natural gas in the Earth was still plentiful,but there were other reasons.Uh,it’s a political thing really and I’m not gonna get into that now.So what happened in the 1970s was:oil and natural gas became very expensive very quickly.And that spurred people to start looking into alternative forms of energy,solar energy probably being the most popular.

  教授:不完全是这样。地球上的石油和天然气仍然很丰富,但还有其他原因。呃,这是一个政治问题,我现在不想谈这个问题。所以在1970年代发生的事情是:石油和天然气很快变得非常昂贵。这促使人们开始寻找替代品太阳能可能是最受欢迎的能源形式。

  But then in the 80s,this trend reversed itself when price of oil and natural gas went down.All right,let’s shift our focus now to some of the technologies that have been invented to overcome the problem of gathering diffused solar energy.

  但在80年代,当石油和天然气价格下跌时,这种趋势发生了逆转。好吧,让我们现在把注意力转移到一些已经发明的技术上,以克服收集扩散太阳能的问题。

  The most basic solution is simply to carefully place windows in a building so that the Sun shines into the building and then it’s absorbed and converted into heat.Can anyone think of where this is most commonly used?

  最基本的解决办法就是把窗户小心地放在建筑物里,让阳光照射到建筑物里,然后吸收并转化为热量,有人能想到这是最常用的方法吗?

  Student A:Greenhouses.

  学生甲:温室。

  Professor:Yep,greenhouses where plants are kept warm and provided with sunlight because the walls of the building are made entirely of glass.But we do also have more complex systems that are used for space heating and they fall into two categories,passive and active heating systems.

  教授:是的,温室里的植物都是用玻璃做的,所以温室里有阳光。但是我们也有更复杂的系统,用于空间供暖,分为被动和主动两类。

  Passive systems take advantage of the location or design of a house.For example,solar energy is gathered through large glass panels facing the Sun.The heat is then stored in water-filled tanks or concrete.No mechanical devices are used in passive heating systems.They operate with little or no mechanical assistance.

  被动式系统利用房屋的位置或设计。例如,太阳能通过面向太阳的大玻璃板收集。然后,热量储存在装满水的水箱或混凝土中。被动式加热系统中不使用机械装置。它们在很少或没有机械辅助的情况下工作。

  With active systems,on the other hand,you collect the solar energy at one location and then you use pumps and fans to move heat from the collectors through a plumbing system to a tank,where it can be used to heat a home or to just provide hot water.

  另一方面,在主动系统中,你在一个地方收集太阳能,然后用泵和风扇将热量从收集器通过管道系统转移到水箱,在那里可以用来给家里取暖或只是提供热水。

  Student B:Excuse me,professor,but I’ve got to ask,“how can solar energy work at night or on cloudy days?”

  学生乙:对不起,教授,但我得问,“太阳能怎么能在晚上或阴天工作?”?”

  Professor:That’s,well,that is a really good question.As a matter of fact,science is still working on it,uh,trying to find ways in enhancing energy storage techniques,so that the coming of night or cloudy days really wouldn’t matter.That is the biggest drawback of solar energy,the problem of what do you do in cases where the sun’s light is weak or virtually non-present.So,the storage of solar energy,lots of solar energy is really an important aspect.

  教授:这是一个很好的问题。事实上,科学界仍在研究这个问题,呃,试图找到提高储能技术的方法,这样夜晚或阴天的到来就不重要了。这是太阳能最大的缺点,问题是,如果太阳光很弱或者几乎不存在,所以,储存太阳能,大量的太阳能是一个非常重要的方面。

  Student A:Does that mean that solar energy can only be used on a small scale,like heating a home?

  学生甲:这是不是意味着太阳能只能在小范围内使用,就像给家里供暖一样?

  Professor:Well,actually,there have been some attempts to build solar energy power plants.The world’s largest solar power plant is located in Kramer Junction,California.It can generate 194 megawatts of electric power,but that’s just a drop in the bucket.Right now the utility companies are interested in increasing the capacity of their Kramer Junction plant,but only time will tell if it will ever develop into a majorsource of power for that region,considering the economic and political factors involved.

  教授:事实上,有人试图建造太阳能发电厂。世界上最大的太阳能发电厂位于加利福尼亚州的克莱默交界处。它可以产生194兆瓦的电力,但这只是杯水车薪。现在公用事业公司有兴趣增加他们的产能克莱默枢纽核电站,但考虑到所涉及的经济和政治因素,只有时间才能证明它是否会发展成为该地区的主要电力来源。

  1.What is this lecture mainly about?

  A.An efficient solution to the problem of storing solar energy.

  B.Energy policies in the twentieth century.

  C.Reasons that solar energy is not more widely used.

  D.The superiority of solar energy to oil and natural gas.

  正确答案:C

  题目解析:讲座介绍了太阳能利用的历史和现状,说明了太阳能的缺点,并由此阐述了太阳能不能广泛使用的原因。因此C正确。文中没有介绍任何储存太阳能的方法,A错误。

  2.What are the two main problems solar power presents as an energy source?Click on two answers

  A.It is a potentially dangerous source.

  B.It is difficult to concentrate.

  C.It is scientifically unsound.

  D.It needs to be stored.

  正确答案:BD

  题目解析:Because it is hard to gather it?(B选项)Solar energy is everywhere,but it’s also quite diffused.(D选项)综合原文,太阳能的最大两个问题就是存储和收集,分别在文中教授回答学生两次问题时出现。

  3.According to the professor,what led to the popularity of solar energy in the 1970's?

  A.New solar energy technologies.

  B.Advertising campaigns by solar energy companies.

  C.An increase in the price of oil and natural gas.

  D.The depletion of Earth’s reserves of oil and natural gas.

  正确答案:C

  题目解析:So what happened in the 1970s was oil and natural gas became very expensive very quickly,and that spurred people to start looking into alternative forms of energy,solar energy probably being the most popular.是因为油和天然气上涨的原因导致的。选C。

  4.What is the difference between passive and active heating systems?

  A.Passive systems are less reliable.

  B.Passive systems are difficult to install.

  C.Passive systems can be used at any location.

  D.Passive systems work without mechanical support.

  正确答案:D

  题目解析:No mechanical devices are used in passive heating systems.They operate with little or no mechanical assistance.由此可知,被动系统是不依赖任何机械设备的帮助的。因此D正确。文中未提及两系统的地点限制,因此C选项错误。

  5.What is the professor’s opinion about the future of Kramer Junction power plant?

  A.He is uncertain about the future of the Kramer Junction plant.

  B.He believes the Kramer Junction plant will become a major source of power.

  C.He is certain the Kramer Junction plant will not be able to increase its capacity.

  D.He thinks the Kramer Junction plant will have many competitors.

  正确答案:A

  题目解析:but only time will tell if it will ever develop into a major source of power for that region,considering the economic and political factors involved.教授在最后介绍了KJ,也就是一个太阳能发电厂,当提及它的前景时,教授说道“only time will tell.”说明他对其未来也并不确定,因此选A。剩下的选项均未提及。

  6.What does the professor mean when he says that?

  A.He thinks the student should know the answer.

  B.He thinks the student has raised an important issue.

  C.He wants the student to repeat his question.

  D.He will answer the question later in the lecture.

  正确答案:B

  题目解析:That’s...Well...that is a really good question.学生问道木有太阳的时候怎么用太阳能,然后教授口吃了。后面的时候也承认这是暂时无法解决的一个问题,也是一个重要的问题。根据重听部分语义理解,B正确。

  以上就是关于“托福听力真题音频练习”的内容,希望通过上述内容的学习,大家更好的来掌握这部分内容,在听力考试中有更好的发挥。


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