首页
登录
职称英语
Unless we spend money to spot and prevent asteroids, i.e. minor planets, one m
Unless we spend money to spot and prevent asteroids, i.e. minor planets, one m
游客
2023-07-30
34
管理
问题
Unless we spend money to spot and prevent asteroids, i.e. minor planets, one might【B1】______into earth and destroy life as we know it, say some scientists.
Asteroids are bigger【B2】______of the meteoroids that race across the night sky. Most orbit the sun far from earth and don’t【B3】______us. But there are also【B4】______whose orbits put them on a【B5】______course with earth.
Buy $50 million worth of new【B6】______right now. Then spend $10 million a year for the next 25 years to locate 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 pushing asteroids off course with nuclear【B8】______But the cost wouldn’t be cheap.
Is it worth it? Two things experts consider when judging any risk are:【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."
The cure, though, might be worse than the disease.【B11】______? "The world has less to fear from doomsday rocks than from a great nuclear fleet set against them," said a New York Times article. [br] 【B9】
Unless we spend money to spot and prevent asteroids, i.e. minor planets, one might (26) crash into earth and destroy life as we know it, say some scientists.
Asteroids are bigger (27) versions of the meteoroids that race across the night sky. Most orbit the sun far from earth and don’t (28) threaten us. But there are also (29) thousands whose orbits put them on a (30) collision course with earth.
Buy $50 million worth of new (31) telescopes fight now. Then spend $10 million a year for the next 25 years to locate most of the space rocks. By the time we (32) 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 (33) weapons. But the cost wouldn’t be cheap.
Is it worth it? Two things experts consider when judging any risk are: (34) How likely the event is; and how bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike earth once every 500,000 years. (35) Sounds pretty rare--but if one did fail, it would be the end of the world. "If we don’t take care of these big asteroids, they’ll take care of us," says one scientist. "It’s that simple."
The cure, though, might be worse than the disease. (36) Do we really want fleets of nuclear weapons sitting around on earth? "The world has less to fear from doomsday rocks than from a great nuclear fleet set against them," said a New York Times article.
选项
答案
How likely the event is; and how bad the consequences if the event occurs
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2883299.html
相关试题推荐
【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。
【B1】[br]【B20】A、permitB、retainC、preventD、keepD词义辨析题。空格所在句意为:通过挤压颈静脉的阀门,它们能_
【B1】[br]【B18】A、directB、interpretC、followD、preventB动词辨义题[考频:50]。比较四个选项,只有选B
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
Unlesswespendmoneytospotandpreventasteroids,i.e.minorplanets,onem
[originaltext]UnlessyouhavevisitedthesouthernUnitedStates,youproba
随机试题
HowhastheInternetchangedthewaywework? TheInternethasprovidedmanyco
Americawillneveragainhaveasanationthespiritofadventureasit______bef
Accordingtothearticle,whichofthesentencecanbestdescribethedefinition
Tencatsinsearchofownerswillspendthenext10daysinaNewYorkstore
SixSecretsofHigh-EnergyPeopleA)There’sanenergycrisis
深入推进依法行政,加快建设法治政府。具体实施方面需要:()《》()A.全面推
治疗痛经气滞血瘀证,应首选A.少腹逐瘀汤 B.血府逐瘀汤 C.通窍活血汤
玉女煎中配伍牛膝的用意是A.滋补肾水 B.滋肝补肾 C.养阴除热 D.引热
乘数的概念最早是由经济学家()提出的。A.李嘉图 B.凯恩斯 C.马
关于绿色施工评价标准的说法,正确的有()。A.在建设工程竣工完成后,可进行
最新回复
(
0
)