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
专升本
Scientists used to explore【31】the surface of the ocean. Now they【32】below the surface, too. They want to know about the ocean wa
Scientists used to explore【31】the surface of the ocean. Now they【32】below the surface, too. They want to know about the ocean wa
admin
2007-12-11
113
问题
Scientists used to explore【31】the surface of the ocean. Now they【32】below the surface, too. They want to know about the ocean water and the【33】and animal life【34】in the ocean.
In 1934 the scientist William Beebe dived 3 , 000 feet below the surface in a hollow steel ball. In 1935 Auguste Piccard dived 10, 330 feet. In 1960 his son Jean dived to a【35】of 35, 800 feet.
All these early dives were deep. But the divers could not stay down for very long. They had to【36】the surface after a few seconds. Scientists needed to stay down longer to study life below the surface.【37】, they succeeded. Cousteau, a Frenchman, was able to【38】down to a depth of【36】feet for one month and to a depth of 90 feet for a week.
Now scientists are developing even【39】equipment. With this new equipment, men can stay【40】the surface for days or【41】weeks. In 1962 Consteau【42】a research station 35 feet below the surface. Then in 1964 he set up another station on the ocean floor of the Red Sea. This was the first undersea station to operate【43】help from the surface.
Many countries are now studying undersea【44】. The Soviet Union has an undersea laboratory in the Crimean Sea. The United States has a laboratory 50 feet【45】on the ocean floor【46】the Virgin Islands. In 1970 five men lived there for two weeks. Then a【47】of five women scientists stayed in the laboratory.【48】came other teams of men. All were there to explore the ocean depths and【49】plans for the use of its resources. Scientists hope to find enough【50】, vegetable, and animal wealth there to provide food for the whole world.
选项
A、mineral
B、mine
C、minefield
D、minelayer
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/pILC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Haveyou【B1】______askedyourselfwhychildrengotoschool?Youwillprobablysaythattheygo【B2】______theirownlanguagea
Haveyou【B1】______askedyourselfwhychildrengotoschool?Youwillprobablysaythattheygo【B2】______theirownlanguagea
Haveyou【B1】______askedyourselfwhychildrengotoschool?Youwillprobablysaythattheygo【B2】______theirownlanguagea
Haveyou【B1】______askedyourselfwhychildrengotoschool?Youwillprobablysaythattheygo【B2】______theirownlanguagea
Haveyou【B1】______askedyourselfwhychildrengotoschool?Youwillprobablysaythattheygo【B2】______theirownlanguagea
Haveyou【B1】______askedyourselfwhychildrengotoschool?Youwillprobablysaythattheygo【B2】______theirownlanguagea
Thefirstatomicbomb______.What’stheattitudescientiststowardatomicbomb?______.
______fromspace,ourearth,withwatercovering70%ofitssurface,appearsasa"blueplanet".
Scientistsusedtoexplore【31】thesurfaceoftheocean.Nowthey【32】belowthesurface,too.Theywanttoknowabouttheoceanwa
随机试题
患者,男,30岁。因地震导致下身挤压伤,尿量15ml/h,尿中有蛋白、管型、红细胞,应考虑
患者,女,30岁。已婚3年不孕,月经2~3月一行,头晕耳鸣,腰酸腿软,畏寒肢冷,性欲淡漠,舌淡苔白,脉沉细而迟,治疗应首选
湿陷性土地区的建筑设计应符合的要求有()。
自动化仪表调校应遵循的原则有()。
下列适用加工贸易保证金台账的“空转”的是()。
计算机2000年问题,又叫做“千年虫”“电脑千禧年千年虫问题”或“千年危机”,是指在某些使用了计算机程序的智能系统中,由于其中的年份只使用两位十进制数来表示,因此当系统进行跨世纪的日期处理运算时,就会出现错误的结果,进而引发各种各样的系统功能紊乱甚至崩溃。
当农民伯伯对小麦植株一次性施肥过多时,小麦植株会出现萎蔫现象,甚至可能会出现烧苗的现象。当植株发生萎蔫时,最适宜采取的补救措施是()。
你在路边帮助了一位生病的考人,送他到医院,老人的家人赶到后却说是你撞伤了老人,你怎么处理?
论述领导权变理论。【苏州大学2016】
下列叙述中正确的是()。
最新回复
(
0
)