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
EI Nino is the term used for the period when sea surface temperatures are above normal off the South American coast along the eq
EI Nino is the term used for the period when sea surface temperatures are above normal off the South American coast along the eq
admin
2013-11-29
52
问题
EI 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 lush greening of Peruvian deserts have all been ascribed to the whim of EI Nino. Until recently it has been returning about every three to five years. But recently it has become more frequent--for the first time on record it has returned for a fourth consecutive year--and at the same time a giant pool of unusually warm water has settled down in the middle of the Pacific and is showing no signs of moving.
Climatologists don’t yet know why, though some are saying these aberrations may signal a worldwide change in climate. The problem is that nobody really seems sure what causes the EI Nino to start, and what makes some stronger than others. And this makes it particularly hard to explain why it as suddenly started behaving so differently.
In the absence of EI Nino and its cold counterpart, La Nina, conditions in the tropical eastern Pacific are the opposite of those in the west: the east is cool and dry, while the west is hot and wet. In the east, it’s the winds and currents that keep things cool. It works like this. Strong, steady winds, called trade winds, blowing west across the Pacific drag the surface water along with them. The varying influence of the Earth’s rotation at different latitudes, known as the Coriolis effect, causes these surface winds and water to veer towards the poles, north in the northern hemisphere and south in the southern hemisphere. The surface water is replaced by colder water from deeper in the ocean in a process known as upwelling.
The cold surface water in mm chills the air above it. This cold dense air cannot rise high enough or water vapor to condense into clouds. The dense air creates an area of high pressure so that the atmosphere over the equatorial eastern Pacific is essentially devoid of rainfall.
This passage is most likely to a digest of ______
选项
A、a popular science article.
B、a research report.
C、a book review.
D、a newspaper editorial.
答案
A
解析
题干问:“这篇文章最可能节选自……”。正确选项为A“通俗的科普文章”,为什么这篇文章通俗易懂,首先作者把厄尔尼诺现象比作一个“the little boy”和“Christ child”,之后又讲述了它的反常现象以及其机理。而选项B“研究报告”,虽然文中讲到了气象学家,但是我们从研究报告的角度来说,这篇文章缺乏研究报告的特征。而选项C“书评”和选项D“报纸的社论”很显然都离题太远。本题最大的干扰是选项B。
转载请注明原文地址:https://kaotiyun.com/show/ykhO777K
0
考博英语
相关试题推荐
Awisemanoncesaidthattheonlythingnecessaryforthetriumphofevilisforgoodmentodonothing.So,asapoliceoffice
Theyearsbetween1870and1895broughtenormouschangestothetheaterintheUnitedStatesastheresidentcompanywasundermi
Theprocessbymeansofwhichhumanbeingsarbitrarilymakecertainthingsstandforotherthingsmanybecalledthesymbolicpr
Forlaymenethnologyisprobablythemostinterestingofthebiologicalsciencesfortheveryreasonthatitconcernsanimalsin
Dinosaurswerereptileswhichbecameextinctabout65millionyearsago.Themostintriguingquestionaboutdinosaurshasalways
Oneofthemajordifferencesbetweenmanandhisclosestlivingrelativeis,ofcourse,thatthechimpanzeehasnotdevelopedth
ThehistoryofAfrican—Americansduringthepast4-00yearsistraditionallynarrated【1】anongoingstruggleagainst【2】andindiff
ThehistoryofAfrican—Americansduringthepast4-00yearsistraditionallynarrated【1】anongoingstruggleagainst【2】andindiff
Everysociety,beginningwithsomeslightinclinationinonedirectionoranother,carriesitspreferencefartherandfarther,i
Forlaymenethnologyisthemostinterestingofthebiologicalsciencesfortheveryreasonthatitconcernsanimalsintheirno
随机试题
求曲线y=x2与直线y=0,x=1所围成的平面图形绕x轴旋转一周所得旋转体的体积.
A.活疫苗B.死疫苗C.类毒素D.外毒素E.病原体的部分成分百日咳疫苗是
细菌性痢疾:血吸虫病:
关于糖尿病神经病变以下说法正确的是
有关大隐静脉的描述,下列哪项是恰当的
对于城镇街坊内部隐蔽的界址点及村庄内部界址点,其点位允许误差为()cm。
【背景资料】 某水库枢纽工程总库容1500万m3,工程内容包括大坝、溢洪道、放水洞等,大坝为黏土心墙土石坝,最大坝高为35m,坝顶构造如图1-1所示。 施工过程中发生如下事件。 事件1:为加强工程质量管理、落实质量责任,依据《关于贯彻质量发展纲要
因审计范围受到限制,不能获取充分、适当的审计证据,虽影响重大,但不至于出具否定意见的审计报告时,可以出具无法表示意见的审计报告。( )
下列选项中,有关PowerPoint。演示文稿的表述,正确的一项是()。
Babies’ResponseForsometimeinthepastithasbeenwidelyacceptedthatbabies,andothercreatureslearntodothingsb
最新回复
(
0
)