1．Scientists around the world have been studying the warming of waters in the Pacific Ocean known as El Nino．The appearance of El Nino is known to affect the weather around the world．Scientists still do not completely understand it．Yet they now find they can use it to tell about the future in different areas of the world．
One example is the work of two scientists at Columbia University in New York，Mark Cane and Gordon Eshel．A scientist of Zimbabwe（津巴布韦），Roger Buckland worked with them．They have found that when El Nino appears，Zimbabwe has little or no rain．This means corn crops in Zimbabwe are poor．The last El Nino was in 1991to 1993．That was when southeastern Africa suffered a serious lack of rain．
The scientists wrote about their recent work in the publication Nature．Their computer program can tell when an El Nino will develop up to a year before it does．They suggest that this could provide an effective early warning system for southern Africa，and could prevent many people from starving．
33．El Nino is known asB．
A．the changing of the weather in southern Africa
B．the warming of waters in the Pacific Ocean
C．the weather which brings drought（旱灾）to Africa
D．the weather phenomenon that brings heavy rains to Africa
34．Scientists study El Nino in order thatA．
A．they can provide a kind of early warning to the place that will suffer from drought
B．they can tell why Zimbabwe has little or no rain
C．they can do some research work in this field．
D．they can put all this information into their computers．
35．Which of the following is TRUE according to the passage？D
A．Scientists come to understand how El Nino appears．
B．Three scientists from the USA work on this subject．
C．Southern Africa suffered a serious drought and many people died from hunger．
D．El Nino has something to do with Zimbabwe's poor crops．
分析 文章介绍了对厄尔尼诺现象的研究以及采取相应的措施来应对．
解答 BAD
33．B 细节理解题 由短文第一句话Scientists around the world have been studying the warming of waters in the Pacific Ocean known as El Nino．可知，厄尔尼诺现象是指太平洋水域变暖，所以选B．
34．A 细节理解题 由短文最后一句话They suggest that this could provide an effective early warning system for southern Africa，and could prevent many people from starving．可知，研究的目的是早想良策预防挨饿情况的发生．
35．D 推理判断题 由短文第二段第三句They have found that when EI Nino appears，Zimbabwe has little or no rain．This means corn crops in Zimbabwe are poor．可知，厄尔尼诺和津巴布韦的庄稼歉收有关系，所以选D．
点评 阅读理解题测试考生在阅读基础上的逻辑推理能力，要求考生根据文章所述事件的逻辑关系，对未说明的趋势或结局作出合理的推断；或根据作者所阐述的观点理论，对文章未涉及的现象、事例给以解释．考生首先要仔细阅读短文，完整了解信息，准确把握作者观点．
