【单选题】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 meteoroids that race across...
A.
while pushing asteroids off course nuclear weapons would destroy the world
B.
asteroids racing across the night sky are likely to hit Earth in the near future
C.
The worry about asteroids can be left to future generations since it is unlikely to happen in our lifetime
D.
Workable solutions still have to be found to prevent a collision of asteroids with Earth