首页
登录
职称英语
Unless we spend money to spot and prevent asteroids(小行星)now, one might crash
Unless we spend money to spot and prevent asteroids(小行星)now, one might crash
游客
2025-05-01
30
管理
问题
Unless we spend money to spot and prevent asteroids(小行星)now, one might crash into Earth and destroy life as we know it, say some scientists.
Asteroids are bigger versions of the meteoroids (流星) that race across the night sky. Most orbit the sun far from Earth and don’t threaten us. But there are also thousands whose orbits put them on a collision course with Earth.
Buy $ 40 million worth of new telescopes right now. Then spend $ 10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say, we’ll have a way to change its course.
Some scientists favor pushing asteroids off course with nuclear weapons. But the cost wouldn’t be cheap.
Is it worth it? Two things experts consider when judging any risk are: 1) How likely the event is; and 2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 400, 000 years. Sounds pretty rare-but if one did fall, it would be the end of the world. "If we don’t take care of these big asteroids, they’11 take care of us, "says one scientist "It’s that simple. "
The cure, though, might be worse than the disease. Do we really want fleets of nuclear weapons sitting a-round on Earth? "The world has less to fear from doomsday (毁灭性的) rocks than from a great nuclear fleet set against them, " said a New York Times article. [br] What do people think of the suggestion of using nuclear weapons to alter the course of asteroids?
选项
A、It sounds practical but it may not solve the problem.
B、It may create more problems than it might solve.
C、It is a waste of money because a collision of asteroids with Earth is very unlikely.
D、Further research should be done before it is proved applicable.
答案
B
解析
该问题的相关答案出现在文章最后一段中。
转载请注明原文地址:https://tihaiku.com/zcyy/4057817.html
相关试题推荐
Inordertopreventstressfrombeingsetupinthemetal,expansionjointsare
Please____fromsmokinguntiltheaeroplaneisairborne.A、refrainB、preventC、res
Unlesswespendmoneytospotandpreventasteroids(小行星)now,onemightcrash
____Iknowthemoneyissafe,Ishallnotworryaboutit.A、EventhoughB、Unless
Mostinjurescanbeprevented,providedaparentgoesaboutittherightway
Mostinjurescanbeprevented,providedaparentgoesaboutittherightway
Mostinjurescanbeprevented,providedaparentgoesaboutittherightway
WhenItrytounderstand_____thatpreventssomanyAmericansfrombeingashappy
Theideaofpublicworksprojectsasadevicetopreventorcontroldepressi
Theideaofpublicworksprojectsasadevicetopreventorcontroldepressi
随机试题
Oldpeoplearealwayssayingthattheyoungpeoplearenot【C1】______they
EvaluatingSpeakingSpeakingisacomplexactwi
Alargerbrainmakesman______toanimals.A、betterB、superiorC、excelledD、outs
Whatdoesthemostjunioremployeeinalibrarydo?[br]Whocanapplyforasen
关于公司资本结构的决策涉及()。A.长期债务或短期债务 B.债务或股本
教师上课时所使用的课件、视频、投影、模型等教学资源属于( )。A.教材 B.
通常情况下,下列哪种因素更值得投资者重视()。A:资产重估与资产处置B:稳定持
中央银行提高法定存款准备金率时,()。 A.商业银行可用资金增多,贷款上升,
(2017年真题)根据《建筑工程施工质量验收统一标准》,验收规范对工程验收项目未
根据《土壤污染防治法》关于土壤污染的含义的说法,正确的是()。A.土壤污染
最新回复
(
0
)