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
29
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
【S1】[br]【S5】relative→relatively本行中的challenging意为“具有挑战性的”,为形容词,应用副词来修饰,故将relat
Steelisvaluedforitsreliability,butnotwhenitgetscold.Mostformsof
StudyHabitsIncollegeinanyclass,youwillfind
[originaltext]Todaywecontinueourseriesonecologyandconservationwith
中国营养学会推荐0~6个的月婴儿脂肪摄入量应占总能量的( )。A.30%~35
天第我谁A.λφЯR B.ん∷7é C.λ7ЯR D.λφRé
基金管理人合规管理应遵循的基本原则不包括()A.专业性原则 B.独立性原则
患者腰膝痠软,耳鸣头昏,小便频数而清,尿后余沥不尽,夜尿频多,舌淡,脉弱。其证候
甲和乙同住在一幢楼,他们同时出发骑车去图书馆,又同时到达图书馆,但途中甲休息的时
关于上市公司历次募集资金运用在新股招股说明书中应重点披露的情况中,说法正确的有(
最新回复
(
0
)