CORVALIJS. Ore.-- Engineers at Oregon Suite University have made a breakthrough in the performance of microbial (微生物的)fuel cells that can produce electricity directly from wastewater，opening the door to a future in which waste treatment plants not only will power themselves, but will sell extra electricity.
The new technology ,developed at OSU, can now produce 10 to 50 more times the electricity, per volume, than most oilier approaches using microbial fuel cells,and 100 times more electricity than some.
Researchers say this could eventually change the way that wastewater is treated all over the world, replacing the widely used “activated sludge (泥漿) ” process that has been in use for almost a century. The new approach would produce significant amounts of electricity while effectively cleaning the wastewater,
“If this technology works on a commercial scale the way we believe it will ,the treatment of wastewater could be a huge energy producer, not a huge energy cost.” said Hong Liu ，an associate professor in the OSU Department of Biological and Ecological Engineering. “This could have an impact around the world, save a great deal of money, provide better water treatment and promote energy sustainability.”
The biodegradable (能降解的）characteristics of wastewater, if developed to their full potential, could theoretically provide many times the energy that is now being used to process them, with no additional greenhouse emissions.
OSU researchers reported several years ago on the promise of this technology, but at that time the systems in use produced far less electrical power. With new concepts, the technology can now produce more than two kilowatts per cubic meter of liquid reactor volume.
The new system also works better than an alternative approach to creating electricity from wastewater, based on anacrobic (臭氧的）digestion that produces methane (甲烷）.It treats the wastewater more effectively, and doesn’t have any of the environmental drawbacks of that technology, such as production of possible release of methane, a significant greenhouse gas.
小題1:Which of the following best expresses the main idea of the passage?
A．The treatment of wastewater is a huge energy cost.
B．Wastewater is being treated differently over the world.
C．Waste treatment plants have found a new way to power themselves.
D．Microbial fuel cells will produce more electricity from wastewater.
小題2:What can we learn about the new technology from the passage?
A．It can produce 100 times more electricity than any approach used today.
B．Through it more electricity can be created and water can be cleaned better.
C．It has already changed the way that wastewater is treated all over the world
D．It has opened the door to put microbial fuel cells to productive use.
小題3:What attitude does Professor Liu hold towards the new technology?
A. Supportive.      B. Critical.       C Unconcerned.    D. Curious.
小題4:According to the last paragraph, why does the new system work better than the alternative approach?
A．Because it is co-friendly and treats wastewater more effectively.
B．Because it can make full use of anaerobic digestion producing methane.
C．Because it may produce less methane than the alternative approach.
D．Because it can produce 10 times the energy than the alternative approach.

小題1:D
小題2:B
小題3:A
小題4:A

試題分析：本文敘述了研究發(fā)現(xiàn)現(xiàn)在可以用污水中的微生物的燃料來發(fā)電，并且還能凈化污水，這種新技術理論上可以提供許多倍的能量,并且沒有額外的溫室氣體排放。
小題1:標題歸納題。根據(jù)用污水中微生物的燃料來發(fā)電，故選D。
小題2:細節(jié)理解題。根據(jù)The new approach would produce significant amounts of electricity while effectively cleaning the wastewater,通過這種方法不僅能夠發(fā)電而且還能凈化污水，故選B。
小題3:細節(jié)理解題。根據(jù)If this technology works on a commercial scale the way we believe it will ,the treatment of wastewater could be a huge energy producer, not a huge energy cost.可知他支持這個新技術，故選A。
小題4:推理判斷題。根據(jù)It treats the wastewater more effectively, and doesn’t have any of the environmental drawbacks of that technology,這種方法不僅能夠更好地處理污水而且還很環(huán)保，故選A。
點評：細節(jié)理解題是閱讀理解題中必考的一種題型，其解題依據(jù)主要在閱讀材料中找。筆者發(fā)現(xiàn)，這種題型可以用“重現(xiàn)”的方法來解答。所謂“重現(xiàn)”，就是指某一個單詞或短語的同義、反義、上下義、同根詞或原詞在文中重復出現(xiàn)的現(xiàn)象。這種方法常用于解答完形填空，但用來解答閱讀理解細節(jié)題也同樣管用。細節(jié)理解題的重現(xiàn)指的是：正確答案選項語句中的單詞或短語與閱讀材料中的單詞或短語構成一種重復出現(xiàn)的關系。它同樣可以分為：同義、反義、上下義、同根詞或原詞。
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