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第6部分：完型填空(第51～65题，每题1分，共15分)
下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。
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.f 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 wail decrease as the best land for wind，bibfuls，and solar power gets used up.
Solar power is much more__________ (56) than bibful in used but it would still ________(57)1 50 square kilometers terms of the area of land of photovoltaic(光电的) cells to match the energy production of the 1 000 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 would 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. 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 0versimDlificatiOn of the issue.
51. A left B owned C held D bought
52. A fresh B costly C attractive D dirty
53. A number B scale C part D extent
54. A reduce B increase C consume D produce
55. A since B as C because D until
56. A effective B important C special D efficient
57. A require B show C collect D discover
58. A making B Keeping C meeting D creating
59. A form B size C region D scope
60. A conclusions B decisions C solutions D modifications
61. A force B volume C control D power
62. A to B in C for D on
63. A give B take C set D turn
64. A applies B adapts C relates D appeals
65. A touches B faces C covers D holds
