小伙伴们，GRE考试大家复习的怎么样了呢？下面是帮考网分享的一些GRE考试阅读部分的复习资料，一起来看看吧！

释义部分：

10

Ethanol is commonly used as a gasoline supplement, but it is currently about twice as expensive as methanol, the low cost of which is one of its attractive features.

乙醇通常被用作一种汽油的补充，但当前价格大概是甲醇的两倍，价格低是甲醇的一大优势。

11

Methanol’s most attractive feature, however, is that it can reduce by about 90 percent the vehicle emissions that form ozone, the most serious urban air pollutant.

然而甲醇的最大优势，是能够减少机动车 90% 生成臭氧的排放，臭氧是最严重的城市空气污染物。

12

Like any alternative fuel, methanol has its critics.

和任何一种替代燃料一样，甲醇也受到批评。

13

Yet much of the criticism is based on the use of “gasoline clone” vehicles that do not incorporate even the simplest design improvements that are made possible with the use of methanol.

而批评大多基于市面上的车都是烧汽油的，没有针对可能转而使用甲醇做出任何设计上的改进。

(yet 当 yet 引导让步关系时，可以替换为 nevertheless，引导被强调的内容(与之相对地，although 引导被让步的内容)。

14

It is true, for example, that a given volume of methanol provides only about one-half of the energy that gasoline and diesel fuel do; other things being equal, the fuel tank would have to be somewhat larger and heavier.

的确，比如说，甲醇只能提供相同体积的汽油或柴油燃料一半的能量;其他条件相同，(烧甲醇燃料的汽车)油箱会变得更大也更重。

15

However, since methanol-fueled vehicles could be designed to be much more efficient than “gasoline clone” vehicles fueled with methanol, they would need comparatively less fuel.

然而，因为烧甲醇燃料的车可以被设计得比烧汽油的车烧甲醇更有效率，所以它们相对省油。

16

Vehicles incorporating only the simplest of the engine improvements that makes methanol feasible would still contribute to an immediate lessening of urban air pollution.

对发动机做出最简单的改进，使车可以烧甲醇，仍可以帮助减少城市空气污染。

(原 that methanol makes feasible 改为 that makes methanol feasible)

问答：

1. According to the passage, incomplete combustion is more likely to occur with gasoline than with an alternative fuel because

A. the combustion of gasoline releases photochemically active hydrocarbons

B. the combustion of gasoline involves an intricate series of reactions

C. gasoline molecules have a simple molecular structure

D. gasoline is composed of small molecules.

E. gasoline is a carbon-based fuel

选 B

细节题。

根据句 5 - 6：

The combustion of larger molecules, which have multiple carbon-carbon bonds, involves a more complex series of reactions. These reactions increase the probability of incomplete combustion and are more likely to release uncombusted and photochemically active hydrocarbon compounds into the atmosphere.

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