首页
登录
职称英语
Unless we spend money to spot and stop asteroids (小行星) now, one might crash
Unless we spend money to spot and stop asteroids (小行星) now, one might crash
游客
2024-03-01
2
管理
问题
Unless we spend money to spot and stop asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say some scientists. Asteroids are bigger 【B1】______ of the meteoroids (流星) that 【B2】______ across the night sky. Most orbit the sun far from Earth and don’t 【B3】______ us. But there are also thousands of asteroids whose orbits put them on a 【B4】______ course with Earth. Buy $ 50 million 【B5】______ of new telescopes right now. Then spend $10 million a year for the next 25 years to 【B6】______ most of the space rocks. By the time we 【B7】______ a fatal one, the scientists say, we’ll have a way to change its course. Some scientists favor 【B8】______ asteroids off course with nuclear weapons. But the cost wouldn’t be cheap.
Is it worth it? 【B9】______ . Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500,000 years. 【B10】______ . "If we don’t take care of these big asteroids, they’ll take care of us," says one scientist. "It’s that simple."
【B11】______ "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] 【B9】
选项
答案
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.
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3497275.html
相关试题推荐
【B1】[br]【B12】A、IfB、AlthoughC、UnlessD、BecauseD此题为语篇结构词辨析,根据上下文来判断。此空前后两句之间存
【B1】[br]【B3】A、AlthoughB、UnlessC、IfD、UntilA词义辨析题。两个分句的谓语分别是agree和disagree,由
【B1】[br]【B13】A、unlessB、exceptC、untilD、ifC本句意思为:人们会晚些时候眨眼,直到他们要记住六位数而不是两位数。
Wewon’ttelliftheoperationwassuccessful__________(除非他完全清醒).unlessheis
Unlesswespendmoneytospotandpreventasteroids,i.e.minorplanets,onem
Unlesswespendmoneytospotandpreventasteroids,i.e.minorplanets,onem
Unlesswespendmoneytospotandpreventasteroids,i.e.minorplanets,onem
Unlesswespendmoneytospotandpreventasteroids,i.e.minorplanets,onem
Unlesswespendmoneytospotandpreventasteroids,i.e.minorplanets,onem
[originaltext]UnlessyouhavevisitedthesouthernUnitedStates,youproba
随机试题
Divorcedoesn’tnecessarilymakeadultshappy.Buttoughingitoutinanunh
试回答太阳能突起路标检验项目的问题。(5)太阳能突起路标的验收型检验应按《公路交
旋覆花煎煮时的用法A、先煎 B、后下 C、另煎 D、包煎 E、与诸药混合
A.兰科B.石竹科C.毛莨科D.鸢尾科E.菊科紫菀来源于哪个科
广金钱草来源于A.菊科B.豆科C.马鞭草科D.报春花科E.唇形科
产后子宫颈内口关闭的时间是A:1天内 B:1~2天 C:3~5天 D:7~
DLT5155-2016220kV~1000kV变电站站用电设计技术规程中对
关于各种股权筹资方式的特点,下列说法正确的有()。A.吸收直接投资能够尽快形成
下列交易或事项中,会引起现金流量表投资活动产生的现金流量净额发生变化的有()。
关于存货叙述正确的是()。A、存货通常在一年内的一个营业周期内被消耗或出售
最新回复
(
0
)