问题

ime after the rockets and the space shuttle are _____, the rocket will _____ the space shuttle and ____ the sea.
A:set sail; broadcast; drop in
B:ruled out; orbit; show up
C:stepped up; survive; fall for
D:launched; separate from; fall into;
B:ruled out; orbit; show up
C:stepped up; survive; fall for
D:launched; separate from; fall into;
正确答案是: