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
On March 18,1965, Leonov, the Russian astronaut, walked in outer space for the first time. Several months later, a similar feat
On March 18,1965, Leonov, the Russian astronaut, walked in outer space for the first time. Several months later, a similar feat
admin
2012-05-17
96
问题
On March 18,1965, Leonov, the Russian astronaut, walked in outer space for the first time. Several months later, a similar feat was performed by the first American astronaut. Both of these space walkers had spent months previous to their flights learning how to control their movements under the strange conditions which exist in space. Wearing their thick space suits, they learned to deal with an environment where there is neither weight nor gravity, neither up nor down.
We don’t realize how much we depend on the earth’s gravity until we are deprived of it. Then our feet no longer stay on the ground; we float around in the air, the slightest touch may send us drifting off in the opposite direction.
In the laboratories where astronauts are trained for their journeys, they are subjected to conditions that resemble those of flight. It takes time for them to prepare for the great changes that occur in space. When the spaceship leaves the earth at tremendous speed, the astronauts feel as if they are being crushed against the spaceship floor. Later, when they leave the zone of the earth’s gravitation, they are unable to stay in one place. Simple actions, such as eating and drinking, become very difficult to perform. You may get an inkling of what the astronauts have to deal with if you try to drink a glass of water while standing on your head or while just lying down.
Tremendous speeds must be attained to reach other planets in a reasonable time. If spaceships were launched from space, the absence of weight would permit the ships to be launched with great speed at reduced pressures. To illustrate this point, remember how strong the wind feels if we are traveling fast in a car, then imagine a car traveling through an area where there is no wind. The windless condition is comparable to the condition in outer space.
What does "resemble"(Line 2, Para. 3 )mean here?
选项
答案
Simulate
解析
推理判断题.resemble是动词.意思是“相似,类似”.这句话的意思是“飞行前,宇航员在实验室受到严格的训练,这种训练环境类似于真正的飞行。”根据常识,这个实验室就是我们所说的“模拟太空舱”。
转载请注明原文地址:https://kaotiyun.com/show/Txf7777K
0
大学英语四级
相关试题推荐
Shehasgotusedto____________(用吸管喝牛奶)thoughsheisonlytwomonthsold.
A、Inbed.B、Athermother’s.C、Inthehospital.D、Attheoffice.D四个选项对话中均有涉及,听时应注意提问“WhereisAlice?”,当听到“ThisisAlice.I’mcal
Theautomobilehasmanyadvantages.Aboveall,it【B1】______peoplefreedomtogowheretheywanttogowhentheywanttogothere
A、beerandredwine.B、whitewineandsomeRussiandrinks.C、redwineandsomeChinesedrinks.D、champagneandsomeMexicandrin
A、Theyhavealreadychosenapresident.B、Theywillchooseapresidentinafewmonths.C、Shethinksearlierreportsthattheyc
Wethoughthewasstillinhospital.Noneofus______(预料到他会出现在晚会上).
Everyyearearthquakesareresponsibleforalargenumberofdeathsanda【36】amountofdestructioninvariouspartsoftheworld
Surprisingly,nooneknowshowmanychildrenreceiveeducationinEnglishhospitals,stilllessthecontentorqualityofthate
A、Qualified.B、Young.C、Irresponsible.D、Unskillful.A题干询问男士认为私人教练是怎么样的。在对话中男士提到私人教练均毕业于国际私人教练学院,都很有资质。由此可知,私人教练都是合格的,故答案为A)。
随机试题
岩溶地质复杂的铁路大中桥的初测阶段,勘探深度应()。
10kV交联聚乙烯电力电缆施放前的试验内容包括()。
由于他人的行为造成权利人房屋毁损的,权利人可以采取的物权保护方式有()。
下列不属于招标控制价计价依据的是()。
下列对个人汽车贷款期限调整的做法,符合相关规定的是()。
在等额累进法中,对收入增加的客户,可采取()的方法,使借款人分期还款额增多,从而减少借款人的利息负担。
关于资产负债表的说法,错误的有()。
急性胰腺炎的病理生理变化是由于胰腺发生了()。
就业平等权:指公民不论其民族、种族、性别、宗教信仰、家庭背景等的不同和差异,均享有平等获得就业机会的权利。根据上述定义,下列没有侵犯求职者的就业平等权的是:
C语言中,运算对象必须是整型数的运算符是______。
最新回复
(
0
)