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
48
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
BrisbaneandothercitiesinQueenslandareproudofthefollowingEXCEPT______
Manystudentsfindtheexperienceofattendinguniversitylecturestobeac
Youshouldspendabout20minutesonQuestions1-13,whicharebasedonReading
20世纪60年代后半期,美国、()、日本、意大利等国相继建设了特高压试验站和试
花岗岩一般用途的吸水率应不大于()。A、0.5% B、0.6% C、0.7%
A.白蛋白 B.α球蛋白 C.α球蛋白 D.β球蛋白 E.γ球蛋白在正常
某二级耐火等级的多层丙类厂房,其中一个防火分区局部设置了自动灭火系统,设置自动灭
下列不属于区域火灾风险评估指标体系结构中一级指标的是()A.火灾危险源 B.区
个别指导法的优点包括()A.新员工在师傅指导下开始工作,可以避免盲目摸索 B
率的标准化法的意义是A.消除内部构成不同对总率的影响 B.减少抽样误差 C.
最新回复
(
0
)