题文
Electric ears are dirty.In fact, not only are they dirty, they might even be more dirty than their gasoline-powered cousins.People in California love to talk about "zero-emissions vehicles", but people in California seem to be clueless about where electricity comes from. Power plants mostly use fire to make it. Aside from the new folks who have their roofs covered with solar cells, we get our electricity from generators. Generators are fueled by something---usually coal, oil,but also by heat generated in nuclear power plants. There are a few wind farms and geothermal plants as well, but by far we get electricity mainly by burning something.
In other words, those "zero-emissions" cars are likely coal-burning cars. It's just because the coal is burned somewhere else that it looks clean. It is not. It's as if the California Greens are. covering their eyes---"If I can't see it, it's not happening." Gasoline is an incredibly efficient way to power a vehicle; a gallon of gas has a lot of energy in it.But when you take that gas (or another fuel) and first use it to make electricity, you waste a nice part of that energy, mostly in the form of wasted heat---at the generator, through the transmission lines, etc.
A gallon of gas may propel your car 25 miles. But the electricity you get from that gallon of gas won't get you nearly as far---so electric cars bum more fuel than gas-powered ones. If our electricity came mostly from nukes; or geothermal,or hydro, or solar, or wind,then an electric car truly would be clean. But for political, technical,and economic reasons,we don't use much of those energy sources.
In addition,electric cars' batteries which are poisonous for a long time will eventually end up in a landfill.And finally, When cars are the polluters, the pollution is spread across all the roads. When it's a power plant, though, all the junk is in one place. Nature is very good at cleaning up when things are too concentrated, but it takes a lot longer when all the garbage is in one spot.
小题1: What does "clueless" mean in paragraph 2?A．People are seeing the California Greens everywhere.B．People in California love to talk about zero-emissions vehicles.C．People in California love to have their roofs covered with solar cells.D．People there have no idea that so far electricity mainly comes from burning coal, oil,etc.
小题2: What is the main idea of the passage?A．Electric cars are not clean at allB．Electric cars are better than gasoline-powered ones.C．People cast doubts on electric cars' batteries.D．Gasoline is an efficient way to powera vehicle.小题3: The electricity we get from a gallon of gas may make our ear run A．not less than 25 milesB．more than 25 milesC．no more than 25 milesD．not more than 25 miles小题4: According to the passage, electric cars .A．do not burn fuel and more environmentally-friendlyB．are toxic because it is difficult for nature to clean it up when their
batteries are buried in one spot.C．are very good at cleaning up when things are not too concentratedD．are poisonous for a long time and will eventually end up in a landfill小题5: It can be inferred from the passage that A．being green is good and should be encouraged in communicationB．electric cars are not clean in that we get electricity mainly by burning
somethingC．zero-emissions vehicles should be chosen to protect our environmentD．electric cars are now the dominant vehicle compared with gasoline-powered cousins 题型：未知 难度：其他题型
答案
小题1:D小题1:A小题1:D小题1:B小题1:B解析
略考点
据考高分专家说，试题“Electric ears are di.....”主要考查你对 [社会现象类阅读 ]考点的理解。社会现象类阅读
社会现象类阅读概念：
这类文章通过写人记事来揭示文章的主题，显示其社会意义，一般采用顺序或倒叙来叙述。题目经常是一些细节问题。考查的方面可以是原因和其中引发的思考。
社会现象类阅读解题技巧：
这类文章通过写人记事来揭示文章的主题，显示其社会意义，一般采用顺序或倒叙来叙述。题目经常是一些细节问题。考查的方面可以是原因和其中引发的思考。阅读这类文章要理清思路。
1、浏览试题，明确要求。
在阅读文章前，最好先浏览一下文章后面的题干和选项。知道了问题后再去看文章，可使思路更敏捷，而且也便于阅读时留意文中出现的与选项有关的信息。
2、通读全文，抓住主要内容。
在不影响理解的前提下，尽可能地阅读以便在尽可能短的时间内理解文章或段落的内容。阅读时，如遇到不熟悉的单词、词组或一时看不懂的句子，不要停下来苦思冥想，继续读下去，通过上下文的词语和句子可能就理解了。
3、抓住中心思想和段落大意。
通读全文时，要特别注意主题句。每篇文章或每个段落都有与文章有关的句子，尤其是科技、政论性文章的主题句一般都在文章的开头或结尾，插在中间的很少。所以，文章的第一段或开头的第一、二个句子往往包含着文章的中心思想、作者的意图或全文的概述，因此要特别注意，彻底理解。
4、有针对性地仔细阅读，找寻所需信息。
在前面的基础上，可进行有针对性地阅读了。把与问题无关的内容一扫而过，而对于和问题有关的内容认真阅读，还可以用笔在下面做出记号。再把这些信息与问题的要求结合起来，逐条分析，综合判断，找出正确答案。
5、进行合理的推理判断。
对文章有了全面的了解之后，可以按照文章要求以及上下文之间的关系，做出推理判断。在进行推理判断的时候，需要综合考虑句型、语法、句子之间的逻辑关系、文化背景等方面的因素。
6、认真复读，验证答案。
要用全文的中心思想统帅各个题目，研究其内在联系和逻辑关系，并依次审核那些还未打上的题目，确保理解无误。
