I hear Tim once was _____ of losing his life, but now he is _____. [ ]

A. in danger, out of danger

B. in a danger, out of the danger

C. in the danger, out of danger

D. in the danger, out of the danger

坚持自力更生绝不意味着闭关锁国，也不意味着降低对外开放的重要地位。( )