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新托福考试综合写作真题范例详细解析7(阅读材料)

考研英语  时间: 2019-04-08 14:09:16  作者: 匿名 

  阅读材料:

  Car manufacturers and governments have been eagerly seeking a replacement for the automobile’s main source of power, the internal-combustion engine. By far, the most promising alternative source of energy for cars is the hydrogen-based fuel-cell engine, which uses hydrogen to create electricity that, in turn, powers the car. Fuel-cell engines have several advantages over internal-combustion engines and will probably soon replace them.
  汽车制造商和政府都在积极地寻找内燃机的代替品,而目前内燃机是汽车主要的动力源。目前为止,氢燃料电池发动机是最有竞争力的汽车动力代替品。氢燃料电池发动机是用氢作燃料产生电能以充当汽车的动力。鉴于燃料电池发动机相对于内燃机发动机优点多多,因而可以很快替代内燃机。

  One of the main problems with the internal-combustion engine is that it relies on petroleum, either in the form of gasoline or diesel fuel. Petroleum is a finite resource, someday; we will run out of oil. The hydrogen needed for fuel-cell engines cannot easily be depleted. Hydrogen can be derived from various plentiful sources, including natural gas and even water. The fact that fuel-cell engines utilize easily available, renewable resources makes them particularly attractive.
  内燃机发动机的问题之一就是对于石油的依赖,而石油具体的形式是汽油或者柴油。石油是不可再生资源,总有一天会用尽的。而燃料电池发动机所使用的氢则不是那么容易消耗完的。氢有多种来源,比如天然气和水。燃料电池发动机很容易得到,而这种能源的可再生性使其特别具有吸引力。

  Second, hydrogen-based fuel cells are attractive because they will solve many of the world’s pollution problems. An unavoidable by-product of burning oil is carbon dioxide, and carbon dioxide harms the environment. On the other hand, the only byproduct of fuel-cell engines is water.
  第二,氢燃料电池发动机还可以在全球范围内解决污染问题,这也是其具有吸引力的原因。使用石油不可避免的副产品就是二氧化碳,这是对环境有害的气体。而与此同时,燃料电池发动机唯一的副产品就是水。

  Third, fuel-cell engines will soon be economically competitive because people will spend less money to operate a fuel-cell engine than they will to operate an internal-combustion engine. This is true for one simple reason. A fuel-cell automobile is nearly twice as efficient in using its fuel as an automobile powered by an internal-combustion engine is. In other words, the fuel-cell powered car requires only half the fuel energy that the internal-combustion powered car does to go the same distance.
  第三,因为燃料电池发动机的使用费用比内燃机发动机低,燃料电池发动机很快就会在价格上很有竞争力了。这个道理是很简单的。燃料电池汽车的能量利用率几乎是使用内燃机发动机的汽车的两倍。换句话说,行驶相同的距离,使用燃料电池发动机汽车只需要消耗内燃机汽车的一半能量。

  阅读部分需要提取的观点是:
  - Main point: 氢燃料电池发动机将替代内燃机发动机。
  - Sub point 1:氢燃料来源丰富,不会用尽。
  - Sub point 2:氢燃料电池发动机不会污染环境。
  - Sub point 3:氢燃料电池发动机能量利用率高,更为经济。
 

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