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
25
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] 【B10】
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
Sounds pretty rare--but if one did fall, it would be the end of the world
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2883300.html
相关试题推荐
FoodPoisoning--andHowtoPreventItChangi
【B1】[br]【B3】A、AlthoughB、UnlessC、IfD、UntilA词义辨析题。两个分句的谓语分别是agree和disagree,由
【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_
Wewon’ttelliftheoperationwassuccessful__________(除非他完全清醒).unlessheis
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
随机试题
Jan.6issue--Theweatheroutsidewasicy,butinside,250journalistswere
Seeingthe______scene,the______childheldhismother’sarmtightly.A、fright
Abudget(预算)isaspendingplan.Itcanhelpyouspendmoneywisely.Itcan
Whatoursocietysuffersfrommosttodayistheabsenceofconsensusaboutw
教师的职业道德意识的表现形式是教师()。A.道德人格 B.道德品质 C.道
数字出版对编辑流程的影响主要表现在()。A.提高了相关信息的采集速度和质量
当尿pH≥7时,应在尿比密试带法测定结果上加上A.0.004 B.0.003
8个月小儿接触水痘后,立即给予丙种球蛋白()A.可预防并发症 B.可防止瘢
甲区A公司将位于丙市价值5000万元的写字楼转让给乙区的B公司。后双方发生争议,
概算定额与预算定额的表述正确的是()。A.预算定额的编制较概算定额简化一些
最新回复
(
0
)