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
2023-08-27
33
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、It will travel at a speed close to that of light.
B、It may bring a lot of nuclear pollution to the space.
C、It can save a lot of earth’s energy.
D、It may hold more people in the spaceship.
答案
A
解析
女士问有没有可能造出速度上快很多的宇宙飞船,男士说经过研发,技术上来说是可以的,但需要使用核爆炸产生的能量来驱动飞船,才能使其速度接近光速,然后探索遥远的星球,可知选A)项。
转载请注明原文地址:https://tihaiku.com/zcyy/2962260.html
相关试题推荐
[originaltext]Todaymostastronomersacceptthenotionthatgroupsofstars
[originaltext]Todaymostastronomersacceptthenotionthatgroupsofstars
[originaltext]Todaymostastronomersacceptthenotionthatgroupsofstars
[originaltext]W:Areyoubusythisevening?I’mgoingovertotheInternational
[originaltext]W:Areyoubusythisevening?I’mgoingovertotheInternational
[originaltext]W:Areyoubusythisevening?I’mgoingovertotheInternational
[originaltext]M:Hello,MissLin.Sogladtoseeyou!W:Oh,no,youaren’t.I’
[originaltext]W:ThisschoolisluckytohaveateacherasgoodasProf.Helen
[originaltext]W:ThisschoolisluckytohaveateacherasgoodasProf.Helen
[originaltext]W:ThisschoolisluckytohaveateacherasgoodasProf.Helen
随机试题
Shynessisconsideredapersonalitytrait,notapsychologicalconditionor
IsHappinesstheSecretofSuccess?I.Theresearchabout
[originaltext]W:Howareyounewneighbors,Jane?M:Theyseemniceenough,but
关于产后哺乳叙述正确的是( )A.产后应定时哺乳 B.哺乳时新生儿吸吮乳头可
已婚女性,24岁,停经45天,恶心、呕吐、不能进食5天。平时月经周期规律,既往有
奥地利画家克里姆特的作品是()A.《戴珍珠耳环的少女》 B.《大碗岛的星期
患者,女性,26岁。鼻周围三角区疖受挤压后,出现头痛、寒战、高热、昏迷、眼部红肿
某普通合伙企业为内部管理与拓展市场的需要,决定聘请陈东为合伙企业经营管理人;已知
以下属于担保物权的包括( )。A.抵押权 B.留置权 C.使用权 D.经
电气设备试验能有效地发现较危险的集中性缺陷,鉴定电气设备绝缘强度最直接的方法(
最新回复
(
0
)