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
2024-03-02
17
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] 【B2】
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
versions
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3499552.html
相关试题推荐
【B1】[br]【B12】A、lestB、unlessC、becauseD、ifC从逻辑关系上推测,此句是因果关系,故选because。lest“以
【B1】[br]【B2】[audioFiles]audio_eufm_j03_007(20082)[/audioFiles]preventable
【B1】[br]【B16】A、stimulatedB、fannedC、firedD、providedB语义衔接题。句中的prevent和from搭配
【B1】[br]【B7】A、unlessB、andC、howeverD、althoughC此处是列举二战后城市人口变化情况,前后两个分句的内容是相反
【B1】[br]【B11】A、preventingB、freeingC、restrainingD、refrainingB词组辨析。本句意为“现代科技
【S1】[br]【S9】E此空可以根据preventsth.fromdoingsth.这一结构找到正确答案,from后面的动词要用-ing形式,而只有
【B1】[br]【B16】A、forbidsB、discouragesC、preventsD、allowsD词义辨析题。由上文可以推论出此句需要一个
【B1】[br]【B9】A、forbidsB、preventsC、protectsD、allowsDforbid和allow可以和不定式搭配,前者表
Thispassagemainlydiscusseshowepidemicsspreadandhowtopreventinadvance
Thispassagemainlydiscusseshowepidemicsspreadandhowtopreventinadvance
随机试题
1Researchersuncoveredaseriousflawintheunderlyingtechnologyforn
SomeAdvicetoCollegeGraduatesI.Adviceonyourdreams
下列不属于土石方机械的有()。A.推土机 B.挖掘机 C.平地机 D.稳定
抵押人在抵押期间转让或处分抵押物的,商业银行必须要求其提出( ),并经银行同意
套期工具和被套期项目的“主要条款”包括( )。 I名义金额或本金 II到期
原发性血小板减少性紫癜的检测,下列说法错误的是A:血小板减少B:束臂试验阳性
房地产经纪人陪客户看房时不慎摔伤,这对房地产经纪机构而言,属于( )。A:信用
直接体现商业银行的风险管理水平和研究/开发能力的是()。A:不断开发出针对不同风
()是商业银行生息资产中最重要的组成部分。A.贷款 B.债券 C.资金业务
(2021年真题)全国中期财政规划对中央年度预算编制起约束作用,对地方中期财政规
最新回复
(
0
)