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1.The UN weather agency warned on Tuesday there was a good chance of an"El Nino"climate phenomenon in the Pacific Ocean this year,bringing droughts(干旱) and heavy rainfall to the rest of the world The World Meteorological (气象的) Organization (WMO) said its modeling suggested a"fairly large potential for an El Nino,most likely by the end of the second quarter of 2016".
The El Nino phenomenon occurs every two to seven years,when the trade winds that circulate surface water in the tropical (熟带的) Pacific start to weaken.
WMO pointed out Tuesday that since last December,trade winds had weakened and there had been a significant warming of the waters below the surface in the central Pacific.
"While  there is no guarantee this situation will  lead to an El Nino event,the longer the trade winds remain  weakened,and subsurface temperatures stay significantly warmer than average,the higher chances are,"it said.
Two thirds of climate models predicted that the phenomenon would begin sometime between June and August,with one-fifth suggesting it could start as early as May,and the remaining predicting no El Nino this year,it said.
It is often followed by a return swing of La Nina,which is characterized by unusually cool ocean surface temperatures in the central and eastern tropical Pacific.
"El Nino has an important warming effect on global average temperatures,"Jarraud cautioned,stressing that combined with warming from greenhouse gases such events had"the potential to cause a sharp rise in global average temperature".
33.It can be inferred from the first two paragraphs thatB-'
A.a weather agency warned an"El Nino"would appear on Tuesday
B.WMO showed an El Nino would probably happen by June in 2016
C.an El Nino would bring heavy rainfall to the Pacific Ocean
D.The phenomenon of El Nino happens every seven years
34.What does the underlined phrase"this situation"in Paragraph 4refer to?A
A.Cool ocean surface temperatures in the central and eastern tropical Pacific.
B.A significant warming of the waters below the surface in the central Pacific.
C.Trade winds that circulate surface water in the Pacific.
D.Heavy rainfall in different areas all over the world.
35.According to the text,what might be the percentage of no"El Nino"this year?D
A.13%.  B.20%.    C.67%.    D.87%.

分析 本文属于说明文阅读,作者在这篇文章中向我们讲述了什么是厄尼诺现象,以及人们关于今年是否会发生厄尼诺现象的预测.

解答 33.B  细节理解题,根据第一段The World Meteorological (气象的) Organization (WMO) said its modeling suggested a"fairly large potential for an El Nino,most likely by the end of the second quarter of 2016".可知世界气象组织显示2016年六月可能会发生厄尼诺现象,故选B.
34.A  推理判断题,根据第三段WMO pointed out Tuesday that since last December,trade winds had weakened and there had been a significant warming of the waters below the surface in the central Pacific.可知"this situation"指的应该是中部和东部热带太平洋的冷海表面温度,故选A.
35.D  细节理解题,根据第五段Two thirds of climate models predicted that the phenomenon would begin sometime between June and August,with one-fifth suggesting it could start as early as May,and the remaining predicting no El Nino this year,it said.可知有五分之一的人认为厄尼诺现象会从五月开始,其余的人预测今年没有厄尼诺现象,故选D.

点评 考查学生的细节理解和推理判断能力.做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确选择.在做推理判断题时不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.

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