首页
登录
职称英语
Unless we spend money to spot and prevent asteroids now, one might crash int
Unless we spend money to spot and prevent asteroids now, one might crash int
游客
2023-11-09
57
管理
问题
Unless we spend money to spot and prevent asteroids now, one might crash into Earth and destroy life as we know it, say some scientists.
Asteroids are bigger versions of the meteorites that race(1)______ the night sky. Most(2)______ the sun far from Earth and don’t threaten us. But there are also thousands(3)______ orbits put them on a collision course with the(4)______.
Buy $50 million worth of new telescopes right now. Then spend $10 million a year for the next 25 years to (5)______ most of the space rocks. (6)______ we spot a fatal one, we’ll have a way to change its(7)______, the scientists say.
Some scientists(8)______ pushing asteroids off course with nuclear weapons. But the cost wouldn’t be cheap. Is it(9)______ it? Two things experts consider when judging any (10)______ are how likely the event is and how bad the(11)______ if the event occurs. Experts think an asteroid (12)______ enough to destroy lots of life might strike Earth once every 500,000 years. Sounds pretty(13)______ — but if one did fall, it would be the (14)______ of the world. "(15)______ we don’t take care of these big asteroids, they’ll take care of us. It’s that(16)______," says one scientist.
The(17)______, though, might be worse than the disease. Do we really want(18)______ nuclear weapons sitting around on Earth? "The world has(19)______ to fear from doomsday rocks than from a great nuclear fleet (20)______ them," said a New York Times article. [br] (2)
选项
A、surround
B、orbit
C、cycle
D、enclose
答案
B
解析
词汇辨析题。根据常识,行星围绕太阳转动,orbit“绕轨道运行”符合语义.故B为答案。surround“环绕,围绕”,常用于被动语态be surrounded by“……被……所围绕”;cycle作动词时,表示“骑自行车”;enclose“(用篱笆或围墙)围起来”。
转载请注明原文地址:http://tihaiku.com/zcyy/3172331.html
相关试题推荐
Thecriminaljusticesystemisinneedof______reformtopreventmorepeoplefro
Thecourtwouldnotaccepthisappealunless______evidenceisprovided.A、definit
Thestudentsinthedormitorieswereforbidden,unlesstheyhadspecialpassed,
Whatpreventsthemanfromtakingthepoetsofthe1960sclass?[originaltext]W:
Unlesswespendmoneytospotandpreventasteroidsnow,onemightcrashint
Unlesswespendmoneytospotandpreventasteroidsnow,onemightcrashint
Unlesswespendmoneytospotandpreventasteroidsnow,onemightcrashint
Unlesswespendmoneytospotandpreventasteroidsnow,onemightcrashint
Unlesswespendmoneytospotandpreventasteroidsnow,onemightcrashint
Unlesswespendmoneytospotandpreventasteroidsnow,onemightcrashint
随机试题
[A]hotel[B]Tuesday[C]cinema[D]window[E]Thursday[F]um
Allsubstances,________,liquidorsolid,aremadeupofatoms.A、betheygases
Accordingtotheauthor,peopletendto______.[br][originaltext]Theways
下列关于风险概念的说法,不正确的是()。A.风险是指不确定性对目标的影响
判断肺结核患者有无传染性最主要的依据是()A.胸片 B.临床表现 C.结
根据我国有关标准,220kV线路的绕击耐雷水平是16kA。
完全脱位的牙,要避免出现牙根吸收,植入时间是脱位后A.0.5h内 B.4h内
石决明的原动物有A.杂色鲍 B.皱纹盘鲍 C.羊鲍 D.澳洲鲍 E.白鲍
使用美沙拉嗪需要监测的是A.全血细胞计数和肝功能 B.全血细胞计数和尿常规
安全承诺是企业安全文化建设的基本要素之一,王某是甲市某化工企业的一名基层职工,依
最新回复
(
0
)