第一部分 选修八 Module
1-2
Ⅰ.阅读理解
(2015·内蒙古包头一中三模)
Electric cars are dirty. In fact, not only are they dirty, they might even be more dirty than their gasolinepowered cousins.
People in California love to talk about “zeroemissions (排放) 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 few folks who have their roofs covered with solar ceils, we get our electricity from generators (发电机). Generators are fueled by something—usually coal, oil, and also by heat generated in nuclear power plants. There are a few wind farms and geothermal (地热的) plants as well, but by far we get electricity mainly by burning something.
In other words, those “zeroemissions” cars are likely coalburning cars. It's just because the coal is burned somewhere else, so 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 unbelievably 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.
【2017届高考英语大一轮复习综合训练:选修8 Module 1-2(外研版含解析)】相关文章:
★ 2014高考英语(新人教版)一轮基础训练(20)A、B卷(附答案或解析)
★ 2017高考四川省广安市英语阅读理解一轮系列训练:22(含解析)
★ (安徽专用)2014届高考英语一轮复习方案 作业手册(14)模块5 《Unit 14 Careers》(含解析) 北师大版必修1
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21