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
30
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:https://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
Youdon’thavetoworryaboutmakingyourselfunderstandasmanypeopleherekno
Oldpeoplearealwayssayingthattheyoungarenotwhattheywere.Thesame
[originaltext]KatherineGramgraduatedfromtheUniversityofChicagoin193
俞万春创作的《水浒》续书是()A.《水浒后传》 B.《后水浒传》 C.《水
影响硬膜外麻醉平面最主要的因素是A.局麻药容积 B.导管方向 C.注药方式
下列哪项不是前列腺增生手术的绝对适应证A.前列腺增生并反复尿路感染 B.反复血
引起红细胞相对性增多的疾病是()A.脾功能亢进 B.真性红细胞增多症
测得某一蛋白质样品中氮含量为0.40g,此样品约含蛋白质A:2.40g B:2
①恋爱三年②调解矛盾③登记结婚④和好如初⑤感情出现问题A.①⑤②③④
重新启用被封存的计量检测设备,必须(),方可使用。A.确认其有合格证后
最新回复
(
0
)