Контрольные задания > 15. Since there is ______ gravity in space, astronauts have to strap everything down so it doesn't float away.
A) vacuum
B) airless
C) zero
Вопрос:
15. Since there is ______ gravity in space, astronauts have to strap everything down so it doesn't float away.
A) vacuum
B) airless
C) zero