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
35
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] 【B11】
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
Do we really want fleets of nuclear weapons sitting around on earth
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2883301.html
相关试题推荐
【B1】[br]【B12】A、IfB、AlthoughC、UnlessD、BecauseD此题为语篇结构词辨析,根据上下文来判断。此空前后两句之间存
Thispassagemainlydiscusseshowepidemicsspreadandhowtopreventinadvance
Thispassagemainlydiscusseshowepidemicsspreadandhowtopreventinadvance
Thispassagemainlydiscusseshowepidemicsspreadandhowtopreventinadvance
FoodPoisoning--andHowtoPreventItChangi
【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]【B10】A、unlessB、ifC、althoughD、sinceA逻辑衔接题。要做对此题需判断出前后两个句子的关系。根据上下文可
Wewon’ttelliftheoperationwassuccessful__________(除非他完全清醒).unlessheis
Unlesswespendmoneytospotandpreventasteroids,i.e.minorplanets,onem
随机试题
Howmuchlaborforceworkinfactories?25%根据原文(12)处可得出答案。
Nowadays,withthedevelopmentsofscienceandtechnology,thepopulationis
国外一些研究发现,65岁以上人群中有7%~10%的男性和5%~7%的女性颈动脉狭
下列商业银行的风险事件中,应当归属于操作风险类别的有()。A.交易部门因错误判
牙由哪些部分构成A、牙本质 B、牙釉质 C、牙骨质 D、牙髓
碱基和戊糖通过何种键连接构成核苷A、3’,5’磷酸二酯键 B、氢键 C、肽键
资产与负债按照在公平交易中,熟悉情况定交易双方自愿进行资产交换或者债务清偿定金额
近年来,相关部门对中药材的监管力度不可谓不大,对中药材市场乱象的整治不可谓不严厉
个人所得税按所得项目不同分别适用()。A.超额累进税率 B.超率累进税率
心动周期中占时间最长的是A.等容舒张期 B.等容收缩期 C.充盈期 D.心
最新回复
(
0
)