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 burn more fuel than gaspowered ones. If our electricity came mostly from 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 (垃圾) 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 not too concentrated, but it takes a lot longer when all the garbage is in one spot.
语篇解读:本文是一篇议论文。文章阐述了电能汽车并不环保。
1.What is the main idea of the passage?
A.Electric cars are not clean at all.
B.Electric cars are better than gasolinepowered ones.
C.People have doubts about electric cars' batteries.
D.Gasoline is an effective way to power a vehicle.
答案:A 主旨大意题。第一段指明了本文主旨“电能汽车并不清洁”,随后的几段都是通过各种证据来证明这一论点的。故选A项。
2.The underlined words “be clueless” mean ________.
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