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 is
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
admin
2021-11-23
12
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【C1】________ unexplored and uncharted.
Until about a century ago, the deep-ocean floor was completely【C2】________ , hidden beneath waters averaging over 3,6000 meters deep.
Although researchern have taken samples of deep-ocean rocks and sediments(沉积物) for over a century, the first detailed global【C3】________ of the ocean bottom did not actually start until 1968. Using techniques first developed for the offshore oil and gas industry, the DSDP’s drill ship called the Glomar Challenger, was able to maintain a steady position on the ocean’s surface and drill in very deep waters,【C4】________ 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 took almost 20,000 core samples of seabed sediments and rocks around the world. The Glomar Challenger’s core samples have allowed geologists to【C5】________ 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【C6】________ 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【C7】________ processes that shape the Earth.
Deep-ocean sediments provide a climatic record【C8】________ back hundreds of millions of years, because they are largely isolated from the mechanical erosion and the intense chemical and biological activity that【C9】________ destroy much land based evidence of past climates. This record has already provided【C10】________ into the patterns and causes of past climatic change — information that may be used to predict future climates.
A. stretching B. observation C. strength D. manufacture
E. investigation F. largely G. extracting H. available
I. geological J. insights K. drawing L. rapidly
M. physical N. reconstruct O. inaccessible
【C3】
选项
答案
E
解析
上下文题。根据词性,此处应当填入名词。可选项有 “observation(观察分析),strength(力量),investigation(调查,侦察),insights(洞见)”,根据上下文,分别有researchers have taken samples…;Using techniques…提示研究者们对海底进行探测,故可排除strength和insights,而observation强调观察,比较片面,最符合题意的是investigation。
转载请注明原文地址:https://jikaoti.com/ti/gCzMFFFM
0
专业英语四级
相关试题推荐
Commutershavea40percentgreaterriskofendingupdivorced,accordingtoauniversitystudy.【C1】_____youarereading
Commutershavea40percentgreaterriskofendingupdivorced,accordingtoauniversitystudy.【C1】_____youarereading
Commutershavea40percentgreaterriskofendingupdivorced,accordingtoauniversitystudy.【C1】_____youarereading
Televisionsenableustoseethingshappenalmostattheexactmoment_____.
Recentlyinmanycities,suchasShanghai,NanjingandWuhan,passengersarenotallowedtoeatordrinkonsubwaytrains,andv
Weseealotofadvertisementsalmosteverydayandeverywhere.Someadvertisementsaregood,butsomearenotsogood.Writeac
Duringthesummervacation,kidsareoftenseenhanging______inthestreets.
—Doyoulikeorangejuice?—Yes.Somuch______thatIdrinkitalmosteverydayinsummer.
Upuntilthattime,hisinteresthadfocusedalmost______onfullymasteringtheskillsandtechniquesofhiscraft.
随机试题
下列各种方法中,属于销售收入趋势分析预测方法的是()
根尖手术适用于以下情况,除外
在颌面部骨中,唯一能动的是
患者女,26岁。右2近中切角缺损,牙冠变色,已作根管治疗,无症状,X线片无异常发现,患者咬合关系正常,可选择的修复设计为
房地产企业向居民以分期付款的方式销售住房,该信用形式属于()。
下列关于获得专业承包资质的企业说法正确的有()。
依据现行《宪法》规定,国家在必要时得设立特别行政区。在特别行政区内实行的制度按照具体情况由()以法律规定。
“十个手指有长短”表明在学生发展过程中存在()。
66,40,24,20,()
AlibrarytoLastForever"Thefundamentalreasonswhytheelectriccarhasnotattainedthepopularityitdeservesarethe
最新回复
(
0
)