His inability to learn foreign languages was a(n()to his career.
A、A.objection
B、B.defect
C、C.obstacle
D、D.depression
A、A.objection
B、B.defect
C、C.obstacle
D、D.depression
A、Arch the back to add strength to the muscles B、Bend his knees and lift with his legs C、Bend his back and stoop D、Bend his back and stoop with arms straight
A、if he can do so without any risk to his vessel B、if he can do so without undue delay C、if he can do so without serious danger to his vessel or to individuals on board D、without regard to any danger to his vessel
A、is capable of bringing B、is sufficient to bring C、is not capable of bringing D、is probally to bring