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
2025-04-12
14
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’II 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 around 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/4034894.html
相关试题推荐
Youknowyourselfbetterthananyoneelse;donotundertakethatprojectunless
Weshallneverbeableto______ourselvestrulyunlessweareworkingforthewel
Thecompanydirectorsaskedthegovernmentto______inthedisputeandpreventa
Ifweacceptthatwecannotpreventscienceandtechnologyfromchangingour
Ifweacceptthatwecannotpreventscienceandtechnologyfromchangingour
Ifweacceptthatwecannotpreventscienceandtechnologyfromchangingour
Ifweacceptthatwecannotpreventscienceandtechnologyfromchangingour
Ifweacceptthatwecannotpreventscienceandtechnologyfromchangingour
Unlesswespendmoneytospotandpreventasteroids(小行星)now.onemightcrash
Unlesswespendmoneytospotandpreventasteroids(小行星)now.onemightcrash
随机试题
Whathadthepolicefound?His______.bike
Ispentagoodpartofthelastthreeweekshelpingayoungfriendlookfor
Whenitcomestousingtechnologytopromoteeducation,theprevailingwisdo
Languageis,andshouldbe,alivingthing,constantlyenrichedwithnewwor
TheInternet,wonderfulthoughitis,reinforcesoneoflife’sfundamentald
对于犯罪集团的首要分子,不应按集团所犯的全部罪行处罚。( )
A.琥珀酸B.酸枣黄素C.酸枣仁油D.远志皂苷E.当药素有溶血作用的成分是
A.周效磺胺 B.甲硝唑 C.伯氨喹 D.阿苯达唑 E.奎宁可引起溶血性
印染工人将布匹染好后将其挂起来等待布匹自然晾干。这一工序体现了()。A:劳动过程
下列各项中,属于个人所得税“工资、薪金所得”应税项目的是()。A.劳动分红
最新回复
(
0
)