The astronauts have to lie the floor of the spaceship to fight against the great pressure during the flight.
A. in
B. beyond
C. against
D. at
网友回答
A. in
B. beyond
(答案→)C. against
D. at
解析：in在……里面；beyond在……后面；against斜靠着……；at在……。句意：飞行过程中，宇航员不得不斜靠着宇宙飞船的地板躺着以抵御巨大的压力。