8．The idea of getting freshwater from icebergs （冰山） that are pulled to populated areas and dry areas of the world was once treated as a joke more fit for cartoons than real life．But now it is being considered quite seriously by many nations，especially since scientists have warned that the human race will outgrow its freshwater supply faster than it runs out of food．
Glaciers （冰川） are a possible source of freshwater that has been overlooked until recently．
Three-quarters of the Earth's freshwater supply is still tied up in glacial ice，a reservoir of untapped freshwater so huge that it could carry on all the rivers of the world for 1，000years．
Huge glaciers that widen over the shallow continental shelf give birth to icebergs throughout the year．Because they melt more slowly than smaller pieces of ice，icebergs have been known to drift as far north as 35degrees south of the equator （赤道） in the Atlantic Ocean，To hold them and guide them to parts of the world where they are needed would not be too difficult．
The difficulty appears in other technical matters，such as the prevention of rapid melting in warmer climates and the guiding of freshwater to shore in great volume （量）．But even if the icebergs lost half of their volume in drawing，the water they could provide would be far cheaper than that produced by removing salt from seawater．
24．Why do more countries consider getting freshwater from icebergs now？D
A．There are too many icebergs．
B．The huge glaciers may bring too many floods．
C．The population across the world changes too often．
D．Scientists have warned people of the serious situation．
25．The underlined word"overlooked"in Paragraph 2probably means"D"．
A．had a careful look
B．allowed to pass
C．taken seriously
D．failed to notice
26．What makes getting freshwater from icebergs difficult？B
A．The high cost and fewer glaciers．
B．Warmer climate and practical actions．
C．The slow moving speed of the icebergs．
D．The time of waiting for the icebergs'melting．
27．Which of the following might be the best title for the passage？A
A．Get Freshwater From Icebergs
B．Icebergs Cause Global Warming
C．Look for a Better Way to Get Water
D．Solve the Problem of Water Shortage．
分析 把冰山搬到世界上人口稠密的地区和干旱地带．再从中获取淡水，这个想法曾被认为是一个笑话．但是，现在已经有很多国家在考虑这件事情了．
解答 DDBA
24．D 细节理解题．根据第一段最后一句But now it is being considered quite seriously by many nations，especially since scientists have warned that the human race will outgrow its freshwater supply faster than it runs out of food可知．科学家们的警告和目前已经存在的世界缺水的情况使越来越多的国家开始考虑这种方法．故答案为D．
25．D 词义猜测题．画线词所在句中的until recently说明以前这个问题没有得到足够的重视，即被忽视了．overlook意为"忽视"．故答案为D．
26．B 细节理解题．根据最后一段第一句The difficulty appears in other technical matters，such as the prevention of rapid melting in warmer climates and the guiding of freshwater to shore in great volume 可知，从冰山获取淡水的困难在于技术方面．如无法阻止冰川在较温暖的气候中快速融化及如何引导这些淡水等．故答案为B．
27．A 标题概括题．文章第一段提出了从冰山获取淡水这一想法，下文提到了理论依据和方法，最后一段中提到了困难所在，这些都是围绕着从冰山获取淡水展开的，故A项为最佳标题．
点评 本文是人文地理类阅读理解．做这类题材阅读理解时要求考生对文章通读一遍，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项选出正确答案．推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案，切忌胡乱猜测，一定要做到有理有据
