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14.In the dry Namib Desert on the west coast of Africa,one type of beetle has found a special way of surviving.When the morning fog arrives,the Namib Beetle collects water drops on its bumpy(起伏不平的)back,then lets the water roll down into its mouth,allowing it to drink in an area without flowing water.
    ShreerangChhatre watns to use what nature has developed to help the world's poor.Chhatre is an engineer at MIT who works on fog harvesting,the devices that,like the beetle,attract water drops.This way,poor villagers could collect clan water near their homes,instead of spending hours carrying water from distant wells of rivers.
    Access to water is a pressing global issue.According to the World Health Organization and UNICEF,nearly 900 million people worldwide live without safe drinking water.The burden of finding and transporting water falls heavily on women and children."As a middle-class person,I think it's terrible that the poor have to spend hours a day walking just to obtain a basic necessity,"Chhatre says.
   A fog-harvesting device consists of a fence-like mesh panel(网状面板),which attracts drops,connected to containers into which water falls.Chhatre has improved the materials used in these devices.He is continuing his work at MTT Sloan and the Legaturn Center in order to develop a workable business plan for applying fog-harvesting devices.
    Interest in fog harvesting dates back to the 1990s,and has increased since new research on the Namib Beetle became famous in 2001.A few technologists saw potential in the concept for people.One Canadian charitable organization,FogQuest,has tested projects in Chile and Guatemala.
    But fog harvesting remains in its infancy,technologically and commercially,as Chhatre readily recognizes."It still faces some open problems,"he says."But it's a work in progress."After all,the water that fills our rivers and lakes comes from air.

46.Which of the following is TRUE of Shreerang Chhatre?D
A.He is an African engineer.
B.He is researching on the Namib Beetle.
C.He has made the first fog-harvesting device.
D.He is trying to put fog-harvesting devices to use.
47.How did fog harvesting attract more people?C
A.By being advertised by MIT
B.By getting the help of UNICEF
C.By researching on the Namib Beetle
D.By being inspired by the invention of a fence-like mesh panel
48.What do we know about fog harvesting?B
A.It became famous in 2001.
B.It is still in its early stages.
C.It has been tested in Africa.
D.It was invented by FogQuest.
49.The underlined word"it"in the last paragraph refers toC.
A.UNICEF             
B.the beetle
C.fog harvesting         
D.a Canadian charitable organization
50.The author's main purpose in writing the text is toC.
A.stress the importance of saving water
B.show the Namib Beetle's special way of surviving
C.introduce a new device for collecting water from air
D.inform people of the serious water problem in Africa.

分析 短文通过介绍科学家新研究出来的雾收集装置,它能在空气中收集水,因此对一些缺水地区是很有用的.

解答 46.D,推理判断题,根据句子"Itstill faces some open problems,"he says."But it's a work in progress."可知,他正努力想让雾收集装置被使用,故答案为D.
47.C,细节理解题,根据句子Interest in fog harvesting dates back to the 1990s,and has increased since new research on the Namib Beetle became famous in 2001可知,自从2001年对纳米布甲虫的研究变得出名,人们对雾收集装置就更感兴趣,故答案为C.
48.B,细节理解题,根据句子But fog harvesting remains in its infancy可知,雾收集装置还处于早期阶段,故答案为B.
49.C,推理判断题,根据前面提到雾收集装置还处于早期阶段,它还存在着一些问题,因此it指代的就是雾收集装置,故答案为C.
50.C,主旨大意题,短文通过介绍科学家新研究出来的雾收集装置,它能在空气中收集水,因此对一些缺水地区是很有用的,短文的目的就在于介绍这一种新的装置,故答案为C.

点评 解答任务型阅读理解题,首先对原文材料迅速浏览,掌握全文的主旨大意.因为阅读理解题一般没有标题,所以,速读全文,抓住中心主旨很有必要,在速读的过程中,应尽可能多地捕获信息材料.其次,细读题材,各个击破.掌握全文的大意之后,细细阅读每篇材料后的问题,弄清每题要求后,带着问题,再回到原文中去寻找、捕获有关信息.最后,要善于抓住每段的主题句,阅读时,要有较强的针对性.对于捕获到的信息,要做认真分析,仔细推敲,理解透彻,只有这样,针对题目要求,才能做到稳、准.

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