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
67
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______.
SoftwarepiracyproblemsexistandhavebeenexacerbatedinrecentyearsduetoISoverload,decentralizedpurchasing,budgetc
Thedestructionofournaturalresourcesandcontaminationofourfoodsupplycontinuetooccur,largelybecauseoftheextreme
WhatisthepopulationofSydneyaccordingtothepassage?
Themainproblempeoplemayencountertodayarisesfromthefactthat______.
Thetangohasprobablytraveledfurtherandgonethroughmorechangesthanalmost【C1】______Africanslavesbroughtthetangot
Researcherssaidthatchildrendonotnecessarilydevelophealthybonesinareportthatstresses______consumptionofcalcium-
Researcherssaidthatchildrendonotnecessarilydevelophealthybonesinareportthatstresses______consumptionofcalcium-
Doanimalshaverights?Thisishowthequestionisusuallyput.Itseemsauseful,ground-clearingwaytostart.【61】Actual
随机试题
下列属于建筑产品生产的经营管理特点的是()
系统性红斑狼疮最有诊断意义的检查指标是()
《郑伯克段于鄢》一文中,“都城过百雉,国之害也”是一个判断句。()
阿司匹林抑制下列哪种酶而发挥解热镇痛作用( )。
患者,男性,48岁,因大量饮酒后突然发生中上腹持续性胀痛,伴反复恶心、呕吐,呕吐物为胃内容物,来院急诊。查体:体温37.8℃,脉搏90次/分,呼吸18次/分,血压105/80mmHg,查血清淀粉酶明显升高。首要的护理措施是()。
[2007年第27题]已知某理想气体的压强为p,体积为V,温度为T,气体的摩尔质量为M,k为玻兹曼常量,R为摩尔气体常量,则该理想气体的密度为()。
某建设单位经相关主管部门批准,组织某建设项目全过程总承包(即EPC模式)的公开招标工作。根据实际情况和建设单位要求,该工程工期定为两年,考虑到各种因素的影响,决定该工程在基本方案确定后即开始招标,确定的招标程序如下:(1)成立该工程招标领导机构,
税务师代理申请税务行政复议的,在法定的申请期限内,如因不可抗力而延误申请,税务师应在障碍消除后的(),向复议机关申请延长复议申请期限。
高中英语课程阶段,语言知识目标九级对“词汇”的标准描述中要求学生学会使用——个左右的单词和一定数量的习惯用语或固定搭配。
DeltaGoodremsaysshe’slearntalotoverthepastfewyears.Butonelittlenuggetofwisdomshe’llbetakingwithherwhensh
最新回复
(
0
)