首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
El Nino is the term used for the period when sea surface temperatures are above normal off the South American coast along the eq
El Nino is the term used for the period when sea surface temperatures are above normal off the South American coast along the eq
admin
2010-08-07
59
问题
El Nino is the term used for the period when sea surface temperatures are above normal off the South American coast along the equatorial Pacific, sometimes called the Earth’s heartbeat, and is a dramatic but mysterious climate system that periodically rages across the Pacific.
El Nino means "the little boy" or "the Christ child" in Spanish, and is so called because its warm current is felt along coastal Peru and Ecuador around Christmas. But the local warming is just part of an intricate set of changes in the ocean and atmosphere across the tropical Pacific, which covers a third of the Earth’s circumference. Its intensity is such that it affects temperatures, storm tracks and rainfall around the world.
Droughts in Africa and Australia tropical storms in the Pacific, torrential rains along the Californian coast and the Peruvian deserts have all been ascribed to the whim of El Nino.
This at least is the theory, and it has worked pretty well over the past century, with El Nino occurring about every three to five years and La Nina in between. But there have been some baffling developments in recent years. For one thing, El Nino has returned three times in the past four years. For another, since 1976 El Nino has dominated relative to the cooler phase (La Nina). There has been only one significant La Nina, but five El Ninos, including an extremely severe one in 1982—1983 that caused damage costing 8 billion dollars. Moreover a huge pool of warm water has settled down near the dateline in the central Pacific.
Yet it is important to understand the changes if scientists are to be able to forecast the climatic effects of El Ninos with any degree of accuracy. This is not just an academic task— accurate forecasts can spell out feast or famine in many tropical countries around the world. Forecasting efforts have focused on El Nino, whose effects are generally more severe than those of La Nina.
A worrying possibility is that the changes maybe due to greenhouse warming. If so, the recent fluctuations may be an early glimpse of worse things to come.
Which of the following statements is NOT meant by the author, according to the fourth paragraph?
选项
A、El Nino occurs periodically.
B、In recent years El Nino happened more frequently than before.
C、El Nino caused a lot of damages.
D、El Nino doesn’t affect the central Pacific.
答案
D
解析
细节题。文章第四段讲了厄尔尼诺发生的规律和变化,首先是周期性的发生,故A正确。作者还指出以前是每三到五年会发生一次,而在过去的四年中它发生了三次,也就是更频繁了,故B正确。文章还说其中段严重的一次造成了8亿美元的损失,也就是损失巨大。只有D作者没有提到,故应选D。
转载请注明原文地址:https://kaotiyun.com/show/F9xd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Asaresultofrisinguniversitycosts,whataremanystudentsfindingitnecessarytodo?
GoldwasdiscoveredinCalifornia______.
GoldwasdiscoveredinCalifornia______.
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstressseemstoaffecttheimmunedefensesofloweranimalsto
Americanschoosetheirpresidentonthe______.
Researcherssaidthatchildrendonotnecessarilydevelophealthybonesinareportthatstresses______consumptionofcalcium-
Researchersinvestigatingbrainsizeandmentalabilitysaytheirworkoffersevidencethateducationprotectsthemindfromthe
Doanimalshaverights?Thisishowthequestionisusuallyput.Itseemsauseful,ground-clearingwaytostart.【61】Actual
Accordingtothepassage,whichcountry’sstudentsscoredthehighestinmath?
appointments此题仍旧讲email的作用,听前预测时可根据confirm的意思猜测应该是约会、订单等商业性词汇,听时就不会措手不及。
随机试题
在近代,突破文献解释范围,把解释学发展成一种研究一切对话中理解得以可能的条件的科学,使解释学成了一切文本解释的基础的是()
简述确立现代市场营销哲学的支柱。
由于水摄入不足,尿量及比重可出现
国家行政主管部门2000年颁布的《商品房买卖合同示范文本》所包含的条款有()。
自2008年3月1日起,我国个人所得税免征额为( )元。
《中华人民共和国宪法》规定了国家制度和社会制度的根本问题。()
关于现代武器,下列说法错误的是()。
设d=time(),命令?VARTYPE(d)的输出值是
A、 B、 C、 A
【T1】剪纸,顾名思义,就是用剪刀把纸剪成图形(graphics)。(imply)制作典型的剪纸工具极为简单,只需要一把普通的剪刀或小刀,和一张纸。作为一种民间艺术形式,剪纸至今已经有一千五百年的历史。【T2】它的产生和流传与中国农村的节日风俗有着密切关系
最新回复
(
0
)