Scientists around the world have been studying the warming of waters in the Pacific Ocean known as El Nino （厄尔尼诺）. The appearance of El Nino is known to affect the weather around the world. Scientists still do not pletely 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 1991 to 1993. That was when southeastern Africa suffered a serious lack of rain.
The scientists wrote about their recent work in the publication（出版物）Nature. Their puter 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.
【小题1】El Nino is known as .A．the changing of the weather in southern AfricaB．the warming of waters in the Pacific OceanC．the weather which brings drought（旱灾）to AfricaD．the weather phenomenon（现象）that brings heavy rains to Africa【小题2】Scientists study El Nino in order that .A．they can provide a kind of early warning to the place that will suffer from droughtB．they can tell why Zimbabwe has little or no rainC．they can do some research work in this field.D．they can put all this information into their puters.【小题3】Which of the following is TRUE according to the passage?A．Scientists e 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.【小题4】Which of the following is NOT true according to the article?A．The puter is used in this research work.B．Scientists know when an El Nino appears by means of the puter program.C．The scientists published their results of the research work.D．Nature is the name of the article written recently by the scientists.【小题5】What’s the best title for this passage?A．Appearance of El Nino is Predictable（可预测的）B．Drought in ZimbabweC．Early Warning SystemD．Weather in AfricaB
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(答案→)B
解析：科学家一直在研究厄尔尼诺现象。太平洋的部分水域变暖导致气候的变化。虽然不能完全理解，但是可以运用这方面的知识预测世界上不同地区的未来。把这一现象引起的灾难减少到最小。
【小题1】细节理解题。根据文章第一句话可知，厄尔尼诺现象是太平洋的水域变暖。所以选B。
【小题2】细节理解题。根据文章最后一句话可知，研究的目的是早想良策预防挨饿情况的发生。选A。
【小题3】推理判断题。根据They have found that when El 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农业欠收有关系。选D。
【小题4】推理判断题。文中没提及文章的名字，所以D错，选D。
【小题5】主旨大意题。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。所以选A 。