首页
登录
职称英语
[originaltext]W: Dr. Desai, the difficulties of space travel are enormous, aren
[originaltext]W: Dr. Desai, the difficulties of space travel are enormous, aren
游客
2024-04-30
27
管理
问题
W: Dr. Desai, the difficulties of space travel are enormous, aren’t they?
M: Vast. When you think that the nearest star is 4. 2 light years away, a spaceship using current technology would take seventy-two thousand years to get there, much more than the entire known history of this planet.
W: What are the possibilities of building a spaceship that travels much, much faster?
M: Well, I’d say that with research and development it could be technically feasible, (23)but it would probably need to be powered by a nuclear explosion to get it travelling at a speed close to that of light. The explosion would of course have to be set off at a good safe distance from the Earth, (24)but you have to remember that current treaties prohibit nuclear explosions in space, so at present it’s a non-starter.
W: In your book you mention non-nuclear technology and in particular a generational spaceship. Can you explain for listeners exactly what this is?
M: Yes, indeed. (25)Given the vast distances and the time involved, even a very fast spaceship using non-nuclear technology would take several thousand years to reach another star. This means that the people volunteering to go on this journey, won’t live long enough to reach their destination, nor will their grandchildren or their great grandchildren, but many generations later on. They can do nothing in a confined space during all this time. So what would be the point of their lives? And there’s always the risk that they could degenerate into wildness and fighting amongst themselves like some small isolated societies here on Earth.
23. Q: What would happen if the spaceship is powered by a nuclear explosion?
24. Q: Why can’t we use nuclear-powered spaceship at present according to the man?
25. Q: What do we know about traveling in a spaceship using non-nuclear technology according to the man?
选项
A、The fastest spaceship may take several thousand years to get to another star.
B、Volunteers in the spaceship can live an interesting and meaningful life.
C、The spaceship may come across many disasters.
D、People cannot wait to experience space travel.
答案
A
解析
男士说即使速度非常快的非核动力宇宙飞船到达别的星球也需要几千年的时间,因此一代人的寿命不足以完成。需要许多代人才能完成旅行,故选A)项。
转载请注明原文地址:https://tihaiku.com/zcyy/3578526.html
相关试题推荐
[originaltext]Anewly-publishedstudyhasshownthatlonelinesscanspread
[originaltext]W:Dr.Desai,thedifficultiesofspacetravelareenormous,aren
[originaltext]M:CanIborrowyourmathtextbook?Ileftmineintheclassroom.
[originaltext]M:CanIborrowyourmathtextbook?Ileftmineintheclassroom.
[originaltext]M:CanIborrowyourmathtextbook?Ileftmineintheclassroom.
[originaltext]M:CanIborrowyourmathtextbook?Ileftmineintheclassroom.
[originaltext]M:CanIborrowyourmathtextbook?Ileftmineintheclassroom.
Self-helpTravelling1.越来越多大学生选择“自助游”,原因是…2.也会带来一些问题3.你的看法
[originaltext]Venice,asmall,watersidecityinnortheastItaly,boilswit
[originaltext]Venice,asmall,watersidecityinnortheastItaly,boilswit
随机试题
Theyoungpeoplewhotalkofthevillageasbeing"dead"aretalkingnothing
Theteachertreatsthestudent______(就像自己的亲生孩子一样).asifhewerehis/herownch
Forthispart,youareallowed30minutestowriteacompositiononthetopicSh
某市化妆品生产企业,为增值税一般纳税人,本年度有关生产、经营情况如下:(1)销售
下列各项中,属于股份有限公司股东大会职权的是:A:聘任公司经理 B:决定公司的
分行按学校和经办银行汇总辖内上报信息后,应于()个工作日内上报总行。A.5 B
A.辛温解表 B.表里双解 C.清热利咽 D.疏风解表 E.辛凉解表风寒
慢性阻塞性肺疾病阳虚水泛证治疗宜首选A.补肺汤加减 B.小青龙汤加减 C.补
厂商为药品流通所起的专用名称,有专利性,既称为商品名也称为A:专用名 B:专利
A. B. C. D.
最新回复
(
0
)