“冬天已经来到，春天还会远吗？”（）的这一著名诗句，鼓舞了无数身处逆境的仁人志士。

A.拜伦

B.雪莱

C.歌德

Risk of collision may exist（）.

A.if the compass bearing of an approaching vessel does not appreciably change

B.even when an appreciable bearing change is evident, particularly when approaching a vessel at close range

C.if you observe both sidelights of a vessel ahead for an extended period of time

D.All of the above