16.Electric cars are dirty.In fact,not only are they dirty,but they might even be much dirtier than their gasoline-powered cousins.
People in California love to talk about"zero-emissions(零排放)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 new folks who have their roofs covered with solar cells,we get our electricity from generators(發(fā)電機).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.Because the coal is burned somewhere else,it looks clean.It is not true.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 burn more fuel than gas-powered ones.If our electricity came mostly from wind,or geotherm,or solar,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 not too concentrated,but it takes much longer when all the garbage is in one spot.

33.What does the underlined word"clueless"mean in Paragraph 2?D
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.
34.What is the main idea of the passage?A
A.Electric cars are not clean at all.
B.Electric cars are better than gasoline-powered ones.
C.People cast doubts on electric cars'batteries.
D.Gasoline is an efficient way to power a vehicle.
35.The electricity we get from a gallon of gas may make our car runD.
A.not less than 25 miles
B.more than 25 miles
C.no more than 25 miles
D.not more than 25 miles.

分析 電動車真的沒有污染嗎?通過文章的描述我們可以知道實際上并不是這樣的,電動車比現(xiàn)在的汽車可能會導(dǎo)致更多的污染,因為它所使用的電,仍然是需要靠燃燒煤炭的資源來實現(xiàn)的.

解答 33.D 詞義猜測題.根據(jù)文章第二段People in California love to talk about"zero-emissions(排放)vehicles",but people in California seem to be clueless about where electricity comes from.說明加利福尼亞的人喜歡談?wù)摿闩欧诺钠,但是加利福尼亞的人似乎對電源的來源不清楚.該詞應(yīng)該指不清楚,不理解.
34.A 主旨大意題.根據(jù)文章第一句Electric cars are dirty.In fact,not only are they dirty,they might even be more dirty than their gasoline-powered cousins.說明電動車一點也不環(huán)保.故A正確.
35.D 細節(jié)理解題.根據(jù)第四段1,2行A gallon of gas may drive your car 25 miles.But the electricity you get from that gallon of gas won't get you nearly as far.一加侖汽油可能使你的汽車行駛25英里.但是你從那加侖汽油中得到的電力不會讓你的車行那么遠. 說明D正確

點評 本文通過反問:電動車真的沒有污染嗎?實際上并不是這樣的,電動車比現(xiàn)在的汽車可能會導(dǎo)致更多的污染.提出觀點,然后通過描述讓我們認識這樣一種事實.考生首先要仔細閱讀短文,完整了解信息,準(zhǔn)確把握作者觀點.

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