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  3. Debate over the Use of Renewable Energy Amusable of Rockefeller University in New York, US says the key renewable (可再生的) ene

Debate over the Use of Renewable Energy Amusable of Rockefeller University in New York, US says the key renewable (可再生的) ene

admin2011-01-05  37
问题                 Debate over the Use of Renewable Energy
    Amusable of Rockefeller University in New York, US says the key renewable (可再生的) energy sources, including sun, wind and bibfuls, would all require vast amounts of land if developed up to large scale production—unlike nuclear power. That land would be far better (51) alone, he says. Renewable look (52) when they are quite small. But if we start producing renewable energy on a large (53) , the fallout (结果) is going to be horrible.
    Amusable draws his conclusions by analyzing the amount of energy that renewable natural gas and nuclei (原子核) can (54) in terms of power per square meter of land used. Moreover, he claims that (55) renewable energy use increases this measure of efficiency will decrease as the best land for wind, bibfuls, and solar power gets used up.
    Solar power is much more (56) than bibful in use but it would still (57) 150 square kilometers in terms of the area of land of photovoltaic (光电的) cells to match the energy production of the 1000 MW nuclear plant. In another example, he says (58) the 2005 US electricity demand via wind need 780,000 square kilometers,an area the (59) of Texas power alone. However, several experts are highly critical of Amusable’s (60) . John Turner of the US government’s National Renewable Energy Laboratory says that even if the US got all of its (61) from solar energy, it would still need less than half the amount of land that has been (62) highways. Further, it need not (63) up additional land. The US could get a quarter of its energy just from covering rooftops of existing buildings, he says. According to Turner, the same" dual use" also (64) to wind power. The footprint for wind is only 5% of the land that it (65) . Farmers can still farm the land that the turbines are on. Turner says looking solely at land use is an oversimplification of the issue.  
选项 A、left
B、owned
C、held
D、bought
答案A
解析 be left alone指“不管，不理，不干涉”，B“拥有”，C“持有”，D“带来”，根据上下文，本句的意思是“他说土地如果不用于这些用途，情况可能会更好。”
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