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
32
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] (6)
选项
A、Before
B、By the time
C、Even if
D、Although
答案
B
解析
逻辑关系题。此句缺了连接词,by the time表示“到……时候,一旦”,符合句子意思。before不符合上下文逻辑。该句前后两部分不构成让步关系。故排除C、D。
转载请注明原文地址:https://tihaiku.com/zcyy/3172335.html
相关试题推荐
We______payingyouavisitbutthebadweatherpreventedusfromdoingso.A、had
They______fromtalkinguntiltheyknewthatitwassafe.A、preventedB、keptC、res
Thecourtwouldnotaccepthisappealunless______evidenceisprovidedA、definite
Thecurrentgeneralslacknessofthemarkethaspreventedusfrom______neword
Hewaspunished______heshouldmakethesamemistakeagain.A、unlessB、provided
Theytook______measurestopreventpoisonousgasesfromescaping.A、fruitfulB、be
ManydeathsduringchildbirthcouldbepreventedbythefollowingmethodsEXCEP
【B1】[br]【B3】A、IfB、AsC、ThoughD、UnlessA此处应该使用表示假设的从属连词,只能选If。
Thecriminaljusticesystemisinneedof______reformtopreventmorepeoplefro
Whatpreventsthemanfromtakingthepoetsofthe1960sclass?[br][originalt
随机试题
NewresearchfromtheUnitedStatessuggeststhatthemillennia-oldtherapy
A.不连续 B.连续但左、右导数不存在 C.连续但不可导 D.可导
吸收性心智是皮亚杰理论体系中的重要概念( )
断路器弹簧操动机构手动储能与()之间联锁应完备,()前,应断开储能电源(A)机械
心理与教育测评中,相关系数可以用于确定测验的A.信度系数 B.效度系数 C.
肠梗阻3天,呕吐频繁,小便少,头晕、疲乏,心率120次/分,血压70/45mmH
期货从业人员拒绝协会调查或检查且情节严重的,撤销其期货从业人员资格并且在(
下列哪项符合卵巢生理A.成熟卵泡的持续时间是一定的 B.卵泡成熟度与宫颈黏液分
根据《标准施工招标文件》,关于施工合同变更权和变更程序的说法,正确的是( )。A
供货方项目管理的目标不包括( )。A.供货方的成本目标 B.供货方的进度目标
最新回复
(
0
)