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Debate over the use of Renewable energy
Ausubel of Rockefeller University in New York．US．says the key renewable energy,sources，including sun，wind and biofuels，would all require vast (1)0f land if developed up to large scale production1一unlike nuclear power．That land would be far better left alone2，he says．Renewables look attractive when they are quite (2)．But if we start producing renewable energy on a large scale．the fallout is going to be horrible．Instead，Ausubel argues (3)renewed development of nuclear．
Ausubel draws his conclusions by analysing the amount of energy"renewables，natural gas and nuclear can produce in terms of power per square metre of land used3． Moreover．he claims that as renewable energy ues increases,this measure of efficency4 will (4)as the best land for wind，hiorIlels，and solar power gets used up．
Using biofuels to obtain the (5) amolltl[0f energy as a 1000 megawatt nuclear power land would require 2500 square kilometers of farm (6)，Ausubel says．“We shnIJld be sparing Iand for nature5．not using it as pasture for ears and trueks，”he adds．
Solar power is much more emcient than hi()fuel in terms 0f the area of land (7)，but it would still require 150 square kilometres of photovoltal cell to (8)the energy production of the l 000 MW Huelear plant．In another example，he says meeting the 2005 US eleetrieity demand via wind power alone WOUld need 780．000 square kilometres，an area the size of Texas．
However,several erts are highly critieal (9)Ausubel’s conelusionS． John Tumer of the US government’s National Renewable Energy Laboratory says that (10)the US got all 0f its power from solar energy，it WOUld still need less than half the amount 0f land that has been paved over for highways．Further，it need not (11)additional 1and．The US eould get a quarter 0f its energy just from covering rooflops of (12)buildings，he says．
Aeeording to Turner，the same“dual use” applies to wind powe6．The footprint for wind7 is onlv 5％0f the land that it (13)． Farmers can still flarm the land that the turhines are on8． TuiTler says 100king solely at land use is an oversimplication 0f the (14)． “I’m not sure I’d want to huild one 0f these IIUClear plants in Afghanistan9，but we could (1 5)put in wind and solar power.”he adds．
词汇：
renewabJe adj．可再生的 n．可再生能源
photovoltaic adj．光电的
rooflop n．屋顶
biofuel n生物燃料
footprint n．足迹，影响区域
fallout n．余波，结果
turhine n．涡轮机
megawatt n．兆瓦pasture n．牧场，牧地
oversimplifieation n．过于简单化
练习：
1．A．figures B．amounts C．numhers D．digits
2．A．simall B．huge C．1ittle D．vast
3．A．at B．over C．for D．against
4．A．expand B．minimize C．enlarge D．decrease
5．A．same B．similar C．alike D．identical
6．A．region B．site C．area D．land
7．A．1eased B．cultivated C．used D．purehased
8．A．patch B．match C．catch D．fetch
9．A．in B．with C．of D．on
10．A．eVen if B．only if C．what if D．as if
11．A．lock up B．take up C．give up D．step up
12．A．towering B．interes}ing C．nice—looking D．existing
13．A．surrounds B．contains C．includes D． covers
14．A．issue B．stuff C．summary D．suggestion
15．A．doubtflully B．supposedly C．cenainly D．honestly |
