2.The need to feed a growing population is putting much pressure on the world's supply of water.With 97% of the world's water too salty to be drunk or used in agriculture,the worldwide supply of water needs careful management,especially in agriculture.Although the idea of a water shortage(短缺)seems strange to someone fortunate enough to live in a high rainfall country,many of the world's agricultural industries experience constant water shortages.
Although dams can be built to store water for agricultural use in dry areas and dry seasons,the costs of water redistribution(重新分配)are very high.Not only is there the cost of the engineering itself,but there is also an environmental cost to be considered.Where valleys(山谷)are flooded to create dams,houses are lost and wildlife homes destroyed.Besides,water may flow easily through pipes to fields,but it cannot be transported from one side of the world to the other.Each country must therefore rely on the management of its own water to supply its farming requirements.This is particularly troubling for countries with agricultural industries in areas dependent on irrigation.In Texas,farmers'overuse of irrigation water has resulted in a 25% reduction of the water stores.
In the Central Valley area of southwestern USA,a huge water engineering project provided water for farming in dry valleys,but much of the water use has been poorly managed.
Saudi Arabia's attempts to grow wheat in desert areas have seen the pumping of huge quantities of irrigation water from underground reserves.Because there is no rainfall in these areas,such reserves can only decrease,and it is believed that fifty years of pumping will see them run dry.
33.From the first two paragraphs we learn thatC.
A.much of the world's water is available for use
B.people in high rainfall countries feel lucky
C.the costs of water redistribution should be considered
D.water can be easily carried through pipes across the world
34.Which of the following is true?C
A.The water stores in Texas have been reduced by 75%.
B.Most industries in the world suffer from water shortages.
C.The underground water in Saudi Arabia might run out in 50 years.
D.Good management of water use resulted from the project in the Central Valley.
35.The text is mainly aboutB.
A.water supply and increasing population
B.water use management and agriculture
C.water redistribution and wildlife protection
D.water shortages and environmental protection.
分析 文章講到隨著人口增加,農(nóng)業(yè)用水增加,導致了水資源分配不均,并提出了修建水壩解決這種問題的方法.然后著重講了美國德州和沙特阿拉伯因水資源管理問題導致的農(nóng)業(yè)用水的過度使用.
解答 33-35CCB
33.C 推斷題.由第二段第一句"Although dams can be built to store water for agriculture use in dry areas and dry seasons,the costs of water redistribution(重新分配) are very high."可知作者熱認為雖然水資源的重新分配是個很好的辦法,但高昂的費用也需要考慮進去.A項,文章介紹的是水資源短缺帶來的問題,所以A項錯誤.B項,文章沒有相關(guān)內(nèi)容,所以B項錯誤.D項,第二段作者說并不能很容易將水從世界的一端運到另一端.故正確答案為C.
34.C 細節(jié)題.由最后一段最后一句"it is believed that 50 years of pumping will see them run dry."可知正確答案為C.A項,德州水資源減少了25%而不是75%,所以A項錯誤.B項,文中沒有具體提到哪些行業(yè)缺水,所以B項錯誤.D項,文中沒有相關(guān)內(nèi)容,所以D項錯誤.故正確答案為C.
35.B 主旨題.文章開頭講到隨著人口增加,農(nóng)業(yè)用水增加,導致了水資源分配不均,并提出了修建水壩解決這種問題的方法.然后著重講了美國德州和沙特阿拉伯因水資源管理問題導致的農(nóng)業(yè)用水的過度使用,所以B項符合文意.A項,文中說的是人口增加導致的農(nóng)業(yè)用水需求增加,而不是人口增加與水資源供應(yīng)的關(guān)系,所以A項錯誤.C項,沒有提到與農(nóng)業(yè)相關(guān),所以C項錯誤.D項,文章與環(huán)保無關(guān),所以D項錯誤.故正確答案為B.
點評 閱讀理解題測試考生在閱讀基礎(chǔ)上的邏輯推理能力,要求考生根據(jù)文章所述事件的邏輯關(guān)系,對未說明的趨勢或結(jié)局作出合理的推斷;或根據(jù)作者所闡述的觀點理論,對文章未涉及的現(xiàn)象、事例給以解釋.考生首先要仔細閱讀短文,完整了解信息,準確把握作者觀點.