首页
登录
职称英语
[originaltext] Listen to a talk given by an astronaut. Thank you. It’s g
[originaltext] Listen to a talk given by an astronaut. Thank you. It’s g
游客
2024-08-08
11
管理
问题
Listen to a talk given by an astronaut.
Thank you. It’s great to see so many of you interested in this series on "Survival in Outer Space". Please excuse the cameras--we’re being videotaped for the local TV stations.
Tonight I’m going to talk about the most basic aspect of survival--the space suit. When most of you imagine an astronaut, that’s probably the first thing that comes to mind, right? Well, without space suits, it would not be possible for us to survive in space. For example, outer space is a vacuum--there’s no gravity or air pressure; without protection, a body would explode. What’s more, we’d cook in the sun or freeze in the shade---with temperatures ranging from a toasty 300 degrees above to a cool 300 degrees below zero Fahrenheit.
The space suit that NASA has developed is truly a marvel. This photo enlargement here is a life-size image of an actual space suit worn by astronauts on the last space shuttle mission. This part is the torso--it’s made of seven extremely durable layers. This thick insulation protects against temperature extremes and radiation. Next is what they call a "bladder" of oxygen--that’s an inflatable sac, filled with oxygen, to simulate atmospheric pressure. This bladder presses against the body with the same force as the Earth’s atmosphere at sea level. The innermost layers provide liquid cooling and ventilation. Despite all the layers, the suit is flexible, allowing free movement so we Call work.
Another really sophisticated part of the space suit is the helmet. I brought one along to show you. Can I have a volunteer come and demonstrate?
21. What is the speaker’s main purpose?
22.What would cause an unprotected human body to explode in outer space?
23.Where is the "bladder" of oxygen located?
24.What does the speaker show the audience as she describes the main part of the space suit?
25.What will probably happen next?
选项
A、Another speaker will describe the helmet.
B、The woman will talk about the space shuttle.
C、Someone from the audience will try on the helmet.
D、The woman will put on a space suit.
答案
C
解析
说话者带来了一个头盔的实物,并问观众谁自愿上来示范一下。可以推测接下来应有一位自愿者上来试戴头盔,因此选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3710876.html
相关试题推荐
SummaryListentothepassage.Forquestions26—30,completethenotesusingno
SummaryListentothepassage.Forquestions26—30,completethenotesusingno
SummaryListentothepassage.Forquestions26—30,completethenotesusingno
SummaryListentothepassage.Forquestions26—30,completethenotesusingno
Whatisthefindingreportedinthenews?[br][originaltext]16.Researchersha
Whatisthefindingreportedinthenews?[originaltext]16.Researchershavefou
HowdidGregstartfire-walking?[br][originaltext]Listentotheconversation,
HowdidGregstartfire-walking?[originaltext]Listentotheconversation,mark
[originaltext]W:Sohowdidthemeetinggo?Didyoumanagetoconvinceyourcus
[originaltext]W:Sohowdidthemeetinggo?Didyoumanagetoconvinceyourcus
随机试题
CommentonDarwin’sBiographyofCopyofVerseBodyBiograph
[originaltext]W:Mybikewasstolenrecently.Isitpossibletolendmeyoursf
[originaltext]W:Hey,Henry,how’severythinggoing,andwhat’swiththeflower
灭火器结构检查中主要检查灭火器结构以及保险机构、器头(阀门)、压力指示器、喷射软
以下关于预算与滚动预算间的关系,描述错误的是()。A.滚动预算与预算的预测逻辑是
(2012年)审计人员对应收账款明细账进行审查时发现,2011年6月30日,乙公
J34、在短路故障发生后经过大约半个周期的时间,将出现短路电流的最大瞬时值,它是
新建经济适用住房出售价格实行政府指导价。( )
处于自律道德判断阶段的儿童的特征主要是( )A.尚不能进行道德判断 B.进行
提交中国证监会的法律意见书和律师工作报告应是经()名以上具有执行证券期货相关业务
最新回复
(
0
)