首页
登录
职称英语
The ocean bottom— a region nearly 2.5 times greater than the total land area of
The ocean bottom— a region nearly 2.5 times greater than the total land area of
游客
2024-09-05
22
管理
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 researchers 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 [br] 【C8】
选项
答案
A
解析
stretching,语义题。根据词性,此处应当填入动词现在分词。可选项有“stretching(延伸),drawing(吸引)”,但能跟后面back搭配的仅有stretch back“回溯”,draw back“退缩”,且空后的时间短语hundreds of millions of years提示是历史追溯,故选stretching。
转载请注明原文地址:https://tihaiku.com/zcyy/3744918.html
相关试题推荐
Theseproposalssoughttoplacegreaterrestrictionsontheuseandcopyingofd
Bottlesfromthisregionsell_____atabout$50acase.A、wholesaleB、totallyC、e
Bottlesfromtheregionsell______atabout$50acase.(2015-67)A、wholesaleB、to
Greaterlovehathnomanthanthis,thataman______hislifeforhisfriend.A、la
Nearlyallthedoctors______uponadietwhichcontainsalotoffatandfewvege
Commutershavea40percentgreaterriskofendingupdivorced,accordingt
Commutershavea40percentgreaterriskofendingupdivorced,accordingt
Commutershavea40percentgreaterriskofendingupdivorced,accordingt
Commutershavea40percentgreaterriskofendingupdivorced,accordingt
Commutershavea40percentgreaterriskofendingupdivorced,accordingt
随机试题
Somehousesaredesignedtobesmart.Othershavesmartdesigns.Anexample
Ascientistwhowantstopredictthewayinwhichconsumerswillspendthei
Canyouimaginethattheapparently______mandosuchnastythings?A、respective
SydneyOperaHousemustbeoneofthemostrecognizableimagesofthemodem
1989年10月4日21时,韩国ABS树脂加工厂发生火灾爆炸事故,造成14人死亡
下列哪项可引起神经精神性呼吸困难A.糖尿病酮症酸中毒 B.脑出血 C.有机磷
“学为文士”是()的教育目标。A.古希腊 B.古罗马 C.古印度 D.古埃
商品住宅的业主,非住宅的业主按照所拥有的物业的建筑面积交存住宅专项维修资金,每平
属于血管紧张素Ⅱ受体拮抗剂的是( )。A.维拉帕米 B.美托洛尔 C.卡托
下列各项中,不通过“税金及附加”科目核算的有()。A.委托加工物资由受托方
最新回复
(
0
)