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  【"TenyearsagoIcouldneverhaveimaginedI'dbedoingthis,"saysGregPal,33,aformersoftwareexecutive."Imean,thisisessentiallyagriculture,right?ButthepeopleItalkto,especiallytheonescomingoutofbusines】

  "Ten years ago I could never have imagined I'd be doing this,"says Greg Pal,33,a former software executive."I mean,this is essentially agriculture,right?But the people I talk to,especially the ones coming out of business school,think this is the one hot area everyone wants to get into."

  He means bugs.To be more accurate,the genetic(基因的) change of bugs---very,very small ones---so that when they feed on agricultural waste such as woodchip or wheat straw,they do something extraordinary.They excrete (排泄) crude oil.

  Unbelievably,this is not science fiction.Mr.Pal holds up a small cup of bug excretion that could,in theory,be poured into the tank of the big Lexus SUX next to us.Not that Mr.Pal was willing to risk it just yet.He gives it a month before the first vehicle is filled up with what he calls"renewable petroleum".After that,he smiles,"It's a brave new world."

  Mr.Pal is a senior director of LS9,one of several companies in or near Silicon Valley.The company is not interested in using corn as material,given the much-advertised problems created by using food crops for fuel.Instead,different types of agricultural waste will be used according to whatever makes sense for the local climate and economy:wheat straw in California,for example,or woodchip in the south.

  Are Americans ready to be putting genetically changed bug excretion in their cars?"It's not the same as with food,"Mr.Pal say."We are putting these bacteria in a very isolated container.Their entire universe is in that tank.When we've done with them.they are destroyed."

  "Besides",he says,"there is greater good being served.""I have two children,and climate change is something that they are going to face.The energy crisis is something that they are going to face.We have a collective responsibility to do this."

  72.Greg Pal used to___.

  A.have great interest in

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2020-05-22 15:21
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毛丹军

  CBCA

  72.答案C 细节理解题.由文章第一段…saysGregPal,33,aformersoftwareexecutive可知,GregPal原先是一位电脑软件开发人员.故答案为C

  73.答案B细节理解题.文章第二段Tobemoreaccurate,thegenetic(基因的)changeofbugs,可知是改变虫子的基因,以达到让它们吃农业废弃物进而排泄出原油的目的.故答案为B

  74.答案C推理判断题.由文章倒数第二段GregPal所说的话可知,这些虫子排泄的原油将被放在一个单独的容器中,不会损害汽车,是安全的.故答案为C

  75.答案A主旨大意题.本文说明了这样一个研究成果,即通过改变虫子的基因来达到让它们吃农业废弃物进而排泄出原油的目的.故A项能恰如其分地概括本文的主题,其他选项都偏离了文章的主旨.故答案为A

2020-05-22 15:23:37

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