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Global industrialization has poured carbon in the sky, and now we must pay the price: the nasty climate change, with its sinking
Global industrialization has poured carbon in the sky, and now we must pay the price: the nasty climate change, with its sinking
admin
2015-07-05
52
问题
Global industrialization has poured carbon in the sky, and now we must pay the price: the nasty climate change, with its sinking islands and superstorms. But what if we could【C1】______some of that carbon dioxide back down to earth?
Direct air capture (DAC) is the capture of carbon from the sky. Unlike【C2】______carbon capture and storage, DAC doesn’t try to simply capture carbon from chimneys and factory pipes: instead, it collects carbon directly from the【C3】______, no intermediate steps necessary. Better yet, the most sophisticated DAC plants don’t even need much electricity to function—they run on excess heat produced by other industrial processes. The temperatures needed to capture a ton of atmospheric carbon dioxide are "less than what is needed to【C4】______you a cup of tea," says Graciela Chichilnisky, founder of direct air capture company Global Thermostat. The CO
2
removed from the air by plants like Chichilnisky’s has a【C5】______of applications. " A lot of demand for CO
2
is unmet," says Chichilnisky. " In fact there’s a market for it that【C6】______one trillion dollars per year. "
Companies like Chichilnisky’s want to profit from this unmet demand, an aggressive example of doing well while doing good. Global Thermostat’s pilot plant at the Stanford Research Institute in Menlo Park, California, has been【C7】______since construction finished, says Chichilnisky. Now she wants to build plants elsewhere, using the excess heat from power plants. " If the【C8】______shows the way to be profitable is by cleaning up the atmosphere, then this will be the strongest motivation for the world to attack climate change. "
So can DAC save the world? Not quite yet. There’s a lot of concern among【C9】______advocates as to whether DAC can ever scale to the extent where it makes any deduction in the carbon we’re【C10】______pouring in the atmosphere. Moreover, despite the cost claims of Chichilnisky and others in the underdeveloped DAC industry, the jury’s still out on whether the cost of atmosphere-extracted carbon could ever get low enough to provide DAC plants with a profitable business model.
A) technology I) exceeds
B) currently J) atmosphere
C) boil K) unlimitedly
D) produce L) bring
E) profitable M) advanced
F) fame N) variety
G) environmental O) traditional
H) solution
【C5】
选项
答案
N
解析
空格位于不定冠词a和介词of之间,故推测应该填入一个名词。空格所缺词与a和of构成短语,修饰applications,共同作has的宾语,可知答案为N)variety,a variety of意为“各种各样的”。备选项中的其他名词均无法构成a…of结构,故均排除。
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大学英语六级
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