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
The ocean bottom — a region nearly 2. 5 times greater than the total land area of the Earth — is a vast frontier that even today
The ocean bottom — a region nearly 2. 5 times greater than the total land area of the Earth — is a vast frontier that even today
admin
2013-05-05
54
问题
The ocean bottom — a region nearly 2. 5 times greater than the total land area of the Earth — is a vast
frontier
that even today is largely unexplored and uncharted. Until about a century ago, the deep-ocean floor was completely
inaccessible
, hidden beneath waters averaging over 3, 600 meters deep. Totally without light and subjected to intense pressures hundreds of times greater than at the Earth’s surface, the deep-ocean bottom is a hostile environment to humans, in some ways as forbidding and remote as the void of
outer space
.
Although researchers have taken samples of deep-ocean rocks and sediments for over a century, the first detailed global investigation of the ocean bottom did not actually start until 1968, with the beginning of the National Science Foundation’s Deep Sea Drilling Project(DSDP). Using techniques first developed for the offshore oil and gas industry, the DSDP’s drill ship, the Glomar Challenger, was able to maintain a steady position on the ocean’s surface and drill in very deep waters,
extracting
samples of sediments and rock from the ocean floor.
The Glomar Challenger completed 96 voyages in a 15-year research program that ended in November 1983. During this time, the vessel logged 600,000 kilometers and took almost 20, 000 core samples of seabed sediments and rocks at 624 drilling sites around the world. The Glomar Challenger’s core samples have allowed geologists to reconstruct what the planet looked like hundreds of millions of years ago and to calculate what it will probably look like millions of years in the future. Today, largely on the
strength
of evidence gathered during the Glomar Challenger’s voyages, nearly all earth scientists agree on the theories of plate tectonics and continental drift that explain many of the geological processes that shape the Earth.
The cores of sediment drilled by the Glomar Challenger have also yielded information critical to understanding the world’s past climates. Deep-ocean sediments provide a climatic record stretching back hundreds of millions of years, because they are largely isolated from the mechanical erosion and the intense chemical and biological activity that rapidly destroy much land-based evidence of past climates. This record has already provided insights into the patterns and causes of past climatic change — information that may be used to predict future climates.
The author refers to the ocean bottom as a "frontier" in Paragraph 1 because it______.
选项
A、is not a popular area for scientific research
B、contains a wide variety of life forms
C、attracts courageous explorers
D、is an unknown territory
答案
D
解析
推断题型。参看第一段第二行…vast frontier that even today is largely unexplored anduncharted.
转载请注明原文地址:https://www.kaotiyun.com/show/CfgO777K
本试题收录于:
CATTI二级笔译综合能力题库翻译专业资格(CATTI)分类
0
CATTI二级笔译综合能力
翻译专业资格(CATTI)
相关试题推荐
Ourassociationwas________ofteachers,studentsandtheirparents.
Concretefollow-upinitiativeshaveincludedtheorganizationofspecifictrainingsessionswitha________tostimulatingdecisio
Manyanalystsbelievethatstocksareagaininsuchaturbulentperiod,andthatthisrallycouldleadtootherslump.
Everythingontheearthareinincessantchange,nothingcouldremainaneverlastingstate.
Whatanunusualnewsitis!Ican’tbelievemyearsthatthefamouswriterwillcometomycity.
AccordingtoUNICEF,around564millionIndians,nearlyhalfthepopulation,stilldefecateintheopen—infields,forests,ne
AccordingtoUNICEF,around564millionIndians,nearlyhalfthepopulation,stilldefecateintheopen—infields,forests,ne
Resilienceisanecessaryfornavigatingrapidtransformation,asispersonalreinvention.
LikemostotherAmericancompanieswitharigid______,workersandmanagersherehadstrictlydefinedduties.
Havingbillionsoftonsyettobemined,somearguethatcoalconservationmeasuresareunnecessary.
随机试题
《哭小弟》一文的写作特色有()
A、绒毛膜癌B、子宫内膜癌C、外阴癌D、宫颈癌E、卵巢癌上述肿瘤中重点普查的是()
下列哪种行为属于刑法意义上的危害行为?( )
房屋租赁合同中,引起租赁纠纷的主要原因是()。
下列选项中,劳动者可以单方解除劳动合同的情形包括()。
在海运货物保险中,依照我国《海商法》的规定,下列选项中不正确的是( )。
根据物权法律制度的规定,下列关于建筑物区分所有权的表述中,正确的有()。
某电子企业积极参与所属社区的公益事业,为该社区的社会服务机构捐款,该企业负责人认为,通过支持社区的工作,可以间接造福在当地分公司的员工,使工作环境变得更好,促使员工满意度增加,该企业的捐款动机属于()。
什么是固定资产的加速折旧法?它对企业的财务状况会有哪些影响?
•Readtheadvicebelowaboutdeliveringalecture.•Inmostofthelines34-45thereisoneextraword.Itiseithergramma
最新回复
(
0
)