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
39
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 Deep Sea Drilling Project was significant because it was______.
选项
A、an attempt to find new sources of oil and gas
B、the first extensive exploration of the ocean bottom
C、composed of geologists from all over the world
D、funded entirely by the gas and oil industry
答案
B
解析
细节题型。参看第二段第一句…the first detailed global investigation of the oceanbottom.
转载请注明原文地址:https://kaotiyun.com/show/PfgO777K
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
Temperaturerosetothe________limitthroughouttheregionandpeoplewereobligedtoremainindoorsforweeksonend.
Concretefollow-upinitiativeshaveincludedtheorganizationofspecifictrainingsessionswitha________tostimulatingdecisio
A_________personisonewhomyoutrust,butwhoharmsyousecretly.
AccordingtoUNICEF,around564millionIndians,nearlyhalfthepopulation,stilldefecateintheopen—infields,forests,ne
Studentstodayareconsumersofthelatesttechnologygadgetsandsocialmediumplatforms,buttheydon’thaveadeepunderstand
Asmuchhewantedtogooutwithhisfriendsattheweekend,hehadtostaybehindtofinishhishomework.
Someteenagershaveageneralizedresentmentagainstsociety,which______themtherightsandprivilegesofadults,althoughphy
"Itispainingtowatchpeoplesufferingfromwhatishappeningintheregionofmycountry,"Petersaidinawrittenstatement
Andytoldtheinterviewerthatshecouldn’thardlyrememberatimewhenshedidn’twanttobeareporter.
随机试题
评价企业资本经营效益的核心指标是()
B2B
患者,男,22岁。左小腿中下段闭合性骨折24小时,肿胀,局部皮下淤血,足趾呈屈曲状,活动受限。可能的并发症是
在我国,下列哪些机构的印章应当刻有中华人民共和国国徽图案?()
一笔业务中,若出口销售人民币净收入与出口总成本的差额为正数,说明该笔业务为()。
甲公司为上市公司,为提高市场占有率及实现多元化经营,甲公司从2013年开始进行了一系列投资和资本运作,有关资料如下:(1)甲公司于2013年1月1日以900万元银行存款取得乙公司20%的普通股股份,对乙公司有重大影响,甲公司采用权益法核算此项投资
河北满城汉墓出土了一件名为()的灯具,利用虹吸的原理,即使以今天的设计观点看,也是一件超凡脱俗的佳作。
在期中考试后,师生对英语成绩意见较大。原因有二,首先是每班只有几个人及格,大都集中在30分至50分之间;其次,本学期英语考查内容与教学内容有较大偏差。从这个案例我们可以看出,有效自编测验的特征应包括()。
抓好治安行政管理工作是减少治安问题发生的惟一途径。()
如下图所示,两台Catelyst6500交换机通过千兆以太网端口连接,它们之间需要传输ID号为33、44、55,VLAN名为jszx33、jszx44、jszx55的3个VLAN,下列交换机B的VLAN配置,正确地是
最新回复
(
0
)