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
42
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.
Which of the following is true of the Glomar Challenger?
选项
A、It is a type of submarine.
B、It is an ongoing project.
C、It has gone on over 100 voyages.
D、It made its first DSDP voyage in 1968.
答案
D
解析
是非题型。第二段中的the Glomar Challenger做the DSDP’s drill ship的同位语,因而排除A,B项。根据第三段第一句The Glomar Challenger completed 96 voyages…可排除C项。
转载请注明原文地址:https://kaotiyun.com/show/DfgO777K
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
Inthefaceoftheseriousdropinsales,themanagershruggeditoff,sayingthatitwas________butaseasonaldecline.
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmunizedfrombirthagainstmanyofthemostdangerousd
Thefutureofthiscompanyispromising:manyofitstalentedemployeesareflowingintomoreprofitablenet-basedbusiness.
Goodnewswassometimesreleasedprematurely,withtheAmericanrecaptureoftheporthavingannouncedhalfadaybeforethedef
AccordingtoUNICEF,around564millionIndians,nearlyhalfthepopulation,stilldefecateintheopen—infields,forests,ne
AccordingtoUNICEF,around564millionIndians,nearlyhalfthepopulation,stilldefecateintheopen—infields,forests,ne
AccordingtoUNICEF,around564millionIndians,nearlyhalfthepopulation,stilldefecateintheopen—infields,forests,ne
"HavingservedinthattumultuoustimeafterSept.11attacks,Icanofferyoumypersonalcommitment,clearlyandwithoutreser
Inthemajorpalmoilproducingregions,IndonesiaandMalaysia,itisestimatedthatalmostone-thirdofforestlossinthepas
Theword"brick"didnotappearintheEnglishlanguagebeforethe15thcentury.Bricks【C1】________havebeenknowninBritainb
随机试题
欧洲“悲剧之父”是____________。欧洲“喜剧之父”是____________。
关于函数y=2X+(x>0)的单调性,下列描述正确的是()
不宜与甘草同用的药物是
省级商务部门及中央管理企业负责于每年4月1日至6月30日对所属企业的境外投资,按()进行综合绩效评价。
某投资项目寿命为10年,建设期为三年,当基准折现率取10%时,净现值等于零。则该项目的动态投资回收期等于()。
“备案号”栏:()。“总价”栏:()。
科学发展观的基本要求是()。
下列社会关系属于民法调整的有()。
求矩阵A=的特征值与特征向量.
若属性(或属性组)A是基本关系R的外码,它与基本关系S的主码B相对应,则R中每个元组在A上的值或者为空,或者为S中某个元组的主码值。这是()o
最新回复
(
0
)