首页
登录
职称英语
The ocean bottom—a region nearly 2.5 times greater thanthe total land area
The ocean bottom—a region nearly 2.5 times greater thanthe total land area
游客
2023-12-16
41
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 largely unexplored and uncharted. Until about a century
ago, the deep-ocean floor was completely accessible, hidden 【M1】______
beneath waters averaging over 3,600 meters deep. Totally without
light and subjected intense pressures hundreds of times greater 【M2】______
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 out space. 【M3】______
Therefore researchers bare been taking samples of 【M4】______
deep-ocean rocks and sediments for over a century, the first
detailed global investigation of the ocean bottom did actually 【M5】______
start until 1968, with the beginning of the National Science
Foundation’s Deep Sea Drilling Project (DSDP).
Used techniques first developed for the offshore oil and 【M6】______
gas industry, the DSDP’s drill ship, the Glomar Challenger,
was able to maintain a steady position on the ocean’s surface
and drill very deep waters, extracting samples of sediments 【M7】______
and rock from the ocean floor.
The Glomar Challenger’s core samples have allowed geologists
to reconstruct that the planet looked like hundreds 【M8】______
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 with 【M9】______
the theories of plate construction and continental drift that
explain many of the’ geological processes that shape on the 【M10】______
Earth [br] 【M5】
选项
答案
did∧actually改成not
解析
根据上下文,此处应为否定,与后面的until呼应,构成“not...until”的结构,意为“直到1968年,才开始第一次详尽的全球范围的海底考察”。
转载请注明原文地址:https://tihaiku.com/zcyy/3278775.html
相关试题推荐
Justafewshortmonthsago,theUSeconomywasaworker’sparadise:nearlyu
Justafewshortmonthsago,theUSeconomywasaworker’sparadise:nearlyu
Justafewshortmonthsago,theUSeconomywasaworker’sparadise:nearlyu
TheSupremeCourt’srecentdecisionallowsregionalinterstatebankstodoaw
TheSupremeCourt’srecentdecisionallowsregionalinterstatebankstodoaw
TheSupremeCourt’srecentdecisionallowsregionalinterstatebankstodoaw
Theoceanbottom—aregionnearly2-5timesgreaterthanthetotallandarea
Theoceanbottom—aregionnearly2-5timesgreaterthanthetotallandarea
Theoceanbottom—aregionnearly2-5timesgreaterthanthetotallandarea
Theoceanbottom—aregionnearly2-5timesgreaterthanthetotallandarea
随机试题
下列对结构的作用不属于可变荷载范畴的是( )A.楼面活荷载 B.风荷载 C
特别重大事故,是指造成()人以上死亡,或者100人以上重伤(包括急性工业中毒),
A.强直性脊柱炎 B.恶性高热 C.Ⅱ°房室传导阻滞 D.肺栓塞 E.中
小儿时邪感冒的临床特点是A.恶寒,无汗,鼻塞流清涕,舌淡苔薄白 B.发热恶风,
下列各项中,不符合内部牵制的要求的是()。A、出纳人员管票据 B、出纳人员
A.必须在左三分之一范围内显著位置标出B.必须在右三分之一范围内显著位置标出C.
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
接触器的控制线圈如图a)所示,动合触点如图b)所示,动断触点如图c)所示,当有额
社会工作者小张组织了一个留守儿童支持小组,收到了很好的效果。小组结束阶段,小张为
下列属于计量值控制图的是()。A.多值控制图 B.平均值和极差控制图
最新回复
(
0
)